Diamond 101

A girl's best friend

Diamonds are easily one of the more controversial gemstones while also being the most popular of them all. As much as they have been through historically, they remain every girl's best friend and continue to be the top choice for engagement rings.


Please note that this article is referring to natural, earth-mined diamonds only. 


What are diamonds? 


Little treasures that were formed billions of years ago. They are carbon atoms that were put under high heat and pressure at about 100 miles beneath the earth’s surface. Under this pressure, the carbon atoms bonded in the same way in all directions, forming the very hard gemstones we now know as diamonds. But how did they get to us all the way from 100 miles beneath the earth’s surface? Through volcanic eruptions that moved them up through the layers of earth. 


Most natural diamonds are said to be at least one billion years old, with the older ones believed to be 3.5 billion years old. That means each diamond carries earth’s ancient history inside it and is truly as old as time which makes it the best stone to express endless love. 


Where are diamonds found?


Before the 18th century, most diamonds were found in India and seemed to be one of the rarest gemstones. But with discoveries of South African deposits, it became clear that there is a lot more gems available than previously believed. Today diamonds are found in South Africa, Botswana, Angola, Namibia, Canada, Russia, Australia, and some even in the US (although there are no gemstone quality diamonds mined here). Despite not having any viable deposits, the US is the world's biggest diamond market. 


While it may appear that diamonds are plentiful - and they are compared to some other gemstones, each diamond that is mined, can't be replaced which results in fewer diamonds to unearth each year. There are varying estimates, but it is likely that many diamond mines will run out of gemstones within the next 50 years. This puts the seeming abundance of diamonds into perspective for sure!


The 4Cs


The GIA (Gemological Institute of America) 4Cs is all you need to know when purchasing a diamond! They are four criteria to determining the quality of a diamond: cut, color, clarity and of course carat. The higher on all four a stone, the better it's quality and the higher the price.


Carat is the most obvious one, but what many don't know is that prices per carat do not increase in a linear fashion. There are so called thresholds, where the price jumps up: at 0.5 carat, 1 carat, 1.5 carat and so on. A 2 carat stone will have a significantly higher price per carat that a 1.9 carat stone.


The clarity grades the stone based how many inclusions are in the stone. The stones are always graded at a 10x magnification, so you may not be able to tell the difference without using a jewelers loupe. The highest clarity grade is Flawless. This means not a single inclusion could be spotted! Then it goes to Very Very Slightly Included (VVS1 and VVS2), Very Slightly Included (VS1 and VS2), Slightly Included (SI1 and SI2), and Included (I1-I3). For most individuals, inclusions won't be visible until a stone is at least a S1, but this of course depends on your personal preferences.


The color is graded on a scale that starts at D and ends at Z. The color scale grades how colorless the diamond is with D being completely clear and Z having a heavy yellow tint. It takes a lot of training to tell the color differences and most people who do not work in a diamond grading lab, can't tell the difference between a D and G color. However, once again this is something very personal.


If I may offer one word of advice, get a lower color grade diamond if you plan on using a yellow gold setting. The gold will make your diamond look more yellow, so spending extra on a D or E color stone won't pay off.


Cut is hands down the most important C of all four. A good cut can mask almost any imperfection, even making a lower color or clarity look better! An Excellent cut will make the stone perfectly sparkly and sparkle is usually a top priority for most of us. Unless you are purchasing a vintage stone, make sure you always get an Excellent grade on the cut when buying new diamonds. This is the one C you should never compromise on.


Blood diamonds?


The myth that persists. But today's diamond market is far from the myth. While every industry has bad seeds, most of the diamond industry is strictly regulated and breaking the rules won't get you far. Many mining countries greatly benefit from diamonds, giving livelihood to local communities and a perspective for future generations. All jewelers can choose who they buy their diamonds from, and there are plenty of suppliers today that can show a transparent supply chain. Ironically the myth of a blood diamond mostly hurts those at the source, who depend on the industry to flourish.


If you worry about the origin of your diamond, you can always ask for an origin certificate and ask to have an ethical diamond sourced. You can also purchase a vintage diamond. However, it is important to note that the Kimberley Process, which regulates the diamond industry was put in place in 2000. This means any diamond before that was not as strictly regulated, making it much more likely that you are purchasing a conflict diamond when purchasing vintage. If you want to be sure, diamonds from Botswana, Canada, or Australia are usually the safest bet. Whichever way you want to look at it, today's diamond industry is transparent and there are plenty of ethical suppliers to choose from!


Buying diamond jewelry



Once you know the 4Cs, you know all the criteria that will influence the price of a diamond. It is up to you to decide what your priorities are. This also goes for sustainability and traceability. When it comes to wearing diamond jewelry, diamonds are the hardest material on earth but please don't use this as an excuse to be careless! Diamonds can chip and prongs can become loose, so make sure you treat all jewelry with care.


At Meluzza we work mostly with colorful and unexpected stones but some of our pieces do have diamonds. Our North Star Earrings and Constellation Studs feature natural diamonds and we work only with suppliers who are committed to ethical sourcing.



Disclaimer on lab grown diamonds: at Meluzza we do not sell any stones that are man-made, including lab grown diamonds. Our creations are a celebration of nature's beauty and we cherish sustainably sourced stones that provide a livelihood for mining communities across the globe. We trust that all the beauty we need can be created by Mother Nature, and it shouldn't be necessary to build mega factories to replicate what can be found inside the earth. Lab grown diamonds are not treasures, they are nearly worthless and promote mindless overconsumption, values we at Meluzza want to separate ourselves from.

By Paula Doebrich April 9, 2025
Pearls are magical as they are the only gemstone that comes from a living organism! They have been cherished for centuries and used to be more valuable than diamonds. Today, they are considered a staple in any jewelry collection. There is a lot to know about pearls. Pearls 101 There are many different types of pearls. The most valuable and the rarest pearls are natural pearls. Natural pearls are those grown without outside help of any kind. Today natural pearling is only done in the Persian Gulf around Bahrain. Natural pearls are extremely valuable as only a small percentage of pearls will naturally achieve the desirable size, shape and color to create a piece of jewelry. Most pearls used in modern jewelry are cultured. They are still real pearls but grown with human intervention to ensure the final product has the right shape, size, and color to use for jewelry manufacturing. Don't confuse cultured pearls with imitation pearls, which are usually a coated glass bead. Cultured pearls were first introduced to the market by Kokichi Mikimoto in the early 1900s. There are four types of cultured pearls used for jewelry: Akoya Pearls Akoya pearls are the most popular type of cultured pearl. The pearls come from the akoya oyster. They are popular for use in jewelry as they often come in near-perfect round shapes, bright luster and neutral colors like white, cream, champagne, or silver that are desirable for most customers. Pink, green, or black Akoya pearls are usually color treated. Akoya pearls come in a range of sizes. They can be as small as 1 mm and as big as 11 mm. But the average size for and Akoya pearl is considered 7 mm, which is relatively small compared to other types of pearls. Akoya pearls are farmed mostly in Japan and China. Vietnam, Thailand and Australia also produce small amounts of Akoya pearls. South Sea Pearls South Sea pearls come from the South Sea pearl oyster. They are cultured in only in Australia, the Philippines and Indonesia. Because of their large size they generally have a longer growth period compared to Akoya pearls. This type of pearl is much larger than the Akoya pearl: the smallest South Sea pearls are 8 mm and they can be up to 20 mm. The average size for a South Sea pearl is 12 mm. Only a small percentage of South Seas are perfectly round. More common shapes are baroque and drop, making them a great fit for unique designs. They can be white, silver, or gold. Gold South Sea pearls are the most prized type of cultured pearls among collectors. South Sea pearls are considered the most valuable type of cultured pearls due to their large size, their relative scarcity, and unique color. Tahitian Pearls Tahitian pearls come from the black-lip pearl oyster, and are the only pearls that are naturally dark. Many people describe the color as black, but they are not pitch black. Tahitian pearls usually have a dark body color like gray or brown with blue, green, purple or pink overtones. Their iridescent colors is what makes Tahitian pearls so unique. Similar to South Sea pearls, Tahitian pearls are naturally larger. They come in sizes between 8 mm and 18 mm, with 10 mm being the most popular size for a Tahitian pearl. Tahitian pearls are farmed exclusively in French Polynesia. Due to their unique colors and relative rarity, Tahitian pearls are considered to be the second most valuable type of cultured pearl in the world. Freshwater Pearls Freshwater pearls are the most common type of cultured pearl. They come in a wide range of sizes, shapes and colors. Freshwater pearls can be produced by different mussels that live in freshwater lakes and ponds. Unlike most other pearl oysters, these muscles can grow many pearls at once. Freshwater pearl shapes range from very baroque to almost perfectly round. They also come in fun shapes like stick, button or coin. They can be classic white but also come in lavender or pink and are often dyed to achieve more intense bodycolor. They also come in many sizes: a freshwater pearl can be as small as 1 mm and as big as 15 mm and larger. While they can be grown in many regions, China is the main producer of freshwater pearls. Freshwater pearls are widely available and generally considered the least valuable compared to the three other types of cultured pearls. What to know about Pearls? Because pearls are a unique gemstones, their value is determined different compared to other gems. The main quality indicators for pearls are: Size Generally speaking, larger pearls are rarer and more valuable than smaller pearls of the same type. Shape Round is the most difficult shape to culture, making it the most desirable overall. But pear, oval, or baroque pearls are also prized and often work better in certain pieces of jewelry. Baroque in relation to pearls means irregularly shaped and has nothing to do with the time period the pearl was cultured or harvested in. Color Pearls come in many different colors. Their color can be made up of: Bodycolor, which is the dominant color. Overtone, which is the translucent color (or colors) that lies over a pearl’s bodycolor. Orient, which is the shimmer of iridescent colors on (or just below) the pearl’s surface. All pearls display a bodycolor, but only some will show overtone, orient, or both. It is hard to tell which color is considered the most valuable as this varies by pearl type. Luster This factor is often considered the most important one. Luster is the sheen or glow that gives pearls their unique beauty. It is graded on a scale ranging from excellent to poor. The higher the luster, the higher quality and more valuable the pearl. Excellent means that reflections appear bright and sharp Very good luster is defined as reflections appearing bright and almost sharp Good luster means reflections are bright but slightly hazy Fair luster is when reflections are weak and blurred Poor luster is defined as reflections being dim and completely blurry Surface quality Because they are grown in a living organism, most pearls never achieve perfection, even when grown with human intervention. A cultured pearl can have irregularities or abrasions on the surface. The smoother the surface of the pearl, the higher its quality. Nacre quality Nacre is the iridescent layer on the pearl's surface. The thickness, uniformity, and durability of this layer are important quality factors. In fact, nacre quality is closely related to luster, as a pearl with thin nacre will usually appear dull. Matching Matching is an important factor for strands of pearls. The goal is to match pearls of the same size, shape, color, and luster to create a perfect strand or matched pair of earrings. However, in many jewelry designs this factor does not play an important role as size variation may be desirable for certain pieces. What should I know before buying pearl jewelry? Pearls require special care. At a 2.5 to 4.5 on the Mohs Scale , they are one of the softest gemstones used in jewelry. They are also sensitive and require special care to last. Pearl care 101 Because pearls are low on the Mohs Scale, which mens they will be easily scratched, they shouldn't be stacked with gemstone jewelry. Pearls are sensitive to extreme heat. They can burn, crack or become discolored when exposed to high temperatures. They are also easily damaged by acids - including those in perfume, cosmetics, and even body oils or sweat. This is why it's said pearls should the last thing you put on and the firstling you take off. It is generally recommended to wait 30 minutes after applying any personal care products. We always recommend that you stick to warm, soapy water and a soft cloth for cleaning your jewelry at home. With pearls, it is especially important that you never put them in an ultrasonic or steam cleaner both of which will damage the gem. You can wipe pearls with a very soft cloth after each time you wear them to remove any body oils. Store pearls away from gemstone and diamond jewelry to avoid scratching. A soft pouch or a soft lined jewelry box is best for storing them. Pearls are organic and contain trace amounts of water, so make sure they have some room to breathe. Storing pearls in an airtight environment may cause them to become brittle and dull over time. But do not let them collect dust, as the dust particles will scratch their surface.
By Paula Doebrich April 4, 2025
The biggest misconception about fine jewelry is that it needs minimal care to last forever. The opposite is true: the higher quality your jewelry the more careful you want to be. Just like your finest clothes or shoes, there is a way to preserve the beauty of precious jewels. The materials that fine jewelry is made of are delicate. While it is true that solid gold and platinum jewelry won't stain your skin, they are far from indestructible. High carat gold and fine gemstones are fragile treasures! Here is how to preserve them: What to Know About Gold Jewelry Care First, it is important to keep in mind that there is no jewelry made with pure gold. All commercially available gold is alloyed with other metals. The karats of gold tell you how much pure gold is present: 14 karat gold has 58.3%, 18 karat gold 75%, and 22 karat gold 91.6% pure gold. So, when you see solid gold jewelry it is real gold - as opposed to gold plated - but it will never be 100% pure gold, as this would be impossible. But more is not always better -it depends on what your needs are. The higher the gold percentage, the softer the metal. Pure (24 karat) gold is so soft, you could easily bend it - not something you want from a ring or bracelet. 22 karat gold can be used for chunky rings but is never recommended for prong setting precious stones or clasps due to its softness. At Meluzza, we use 18 karat gold, which is hard enough to set stones safely with prongs but it still needs to be treated with care. Because gold is soft it will scratch easily with daily wear. You can always repolish it but scratches aren't a quality indicator, they just indicate how much you wore your jewelry. White gold is higher maintenance. Since gold is naturally yellow, you will notice a yellow touch overtime. White gold may need to be replated regularly to maintain the white color, and how long the plating lasts will depend on how well you take care of your jewelry. With impact and improper care, gold can also bend or even break. What to Know About Platinum Jewelry Care Platinum is more easy going, as it is always used in its pure (or 99.9%) form. However, platinum is more malleable, which means it is easier to bend. This is why you want to be careful with any impact and avoid putting pressure on platinum jewelry. Platinum also scratches much more easily than gold. Some people find the scratches desirable as they build a so-called patina over time. When Not to Wear Fine Jewelry: 1: To the Gym and While Exercising While it should be obvious that wearing rings while doing weights is a bad idea, other activities aren't safe either. Rings can also bend while doing any activities that require you to have a strong grip, such as biking (or spinning), playing tennis, or rowing to name a few. It's not just rings that aren't safe at the gym or during exercise. The gym is a place where you are generally more likely to bang your jewelry on something, which may result in damage to gemstones, and any exercise puts you at risk for falling. The impact and pressure on clasps can cause them to weaken and eventually open. This is not a sign of poor quality - no jewelry clasp is designed in a way to withstand strong, prolonged pressure without popping open. Otherwise you wouldn't be able to take it off. Chains can also tangle, which doesn't cause damage right away but is tricky to deal with, and may in the long term cause them to snap. And all the sweat can make gold and gems look dull. 2: At the Spa The spa is an environment with extreme temperature changes, high humidity and/or dry air, all happening minutes apart. Many gems do not take all of the above well. It is safest to remove your jewelry before any activities that include strong heat, humidity and dry air. Additionally spas often use chlorinated water, which you want to avoid - more on that below. 3: The Pool Now let's talk about chlorine: the chemical damages metals that gold is alloyed with. With frequent exposure to chlorine, gold gets brittle and prongs may break off. While platinum is not affected by chlorine, the chemical may also affect certain gemstones, so just avoid jewelry in the pool altogether, especially if going in for longer periods of time. 4: The Beach Losing your jewelry in the ocean is a very sad and in most cases irreversible experience. But saltwater can also damage and discolor metals, such as gold and platinum, and can slowly erode the polish of most gemstones. Even if you are staying out of the water, sand will be a problem as well. Tiny sand kernels that are hard to clean out are likely to get stuck in your jewelry making it look dirty. And you will hopefully be applying sunscreen regularly which can cause a film to form on jewelry, making it appear dull. 5: While Cleaning Even when doing light cleaning, it is best to remove any jewelry. The harsh chemicals can damage metals and weaken prongs, which increases the risk of losing gemstones. Many gemstones also don't take exposure to most chemicals well. 6: The Shower When diamonds and gemstones are exposed to oils, soaps, and lotions, it can leave a film over them resulting in less sparkle. Softer stones like pearls or opals can be damaged when worn in the shower. Wearing solid gold jewelry in the shower will not harm the metal itself, but it can reduce the shine therefore it is not recommended. Remember that jewelry should always be the last thing you put on. Lotions will not just leave an ugly film on your jewelry, the chemicals can react with the metals that gold is alloyed with and cause discoloration or tarnishing. If you frequently put on jewelry right after applying lotion, makeup or perfume, your solid gold jewelry may leave a dark mark- this is not a sign of poor quality, just an expected chemical reaction. 7: To Bed This one may be controversial, but it’s generally best to remove jewelry before bed. When you sleep with any gemstone jewelry on, you risk breaking the stone. Additionally, chains on pendants can stretch, weakening them. Friction from sheets and movement while sleeping can wear down the metal and loosen prongs on rings and pendants, potentially causing damage to your jewelry. 8: To the Nail Studio Make sure you remove all rings and bracelets before getting your nails done. Acetone will damage your jewelry and may also cause damage to some gemstones. As much as you try, some of it is very likely to drip down on your precious rings, so better to just take them off! 9: To the Club I know you want to show off your jewelry but leave your best pieces at home before a night out. If you are planning on dancing all night you are likely to put impact on your jewelry. You might also sweat a lot and risk banging jewelry - especially gemstone jewelry - against objects. Not to mention, the high risk of falling asleep in your jewelry after a night out. 10: While Cooking Not only is food likely to get stuck in your rings making for an unpleasant look, the cooking oils may spray onto your jewelry and make it look dull. You may have to frequently wash your hands and dishes, so it's best not to wear fine jewelry while doing serious cooking - reheating leftovers is ok! A Gray Area: Stacks Stacking your jewelry is causing scratching and often damages gems. Anything stacked with a diamond will become scratched, as diamonds are the hardest stone and scratch both other gems as well as all metals. But the metals rubbing against each other will also cause scratching. This is well known and most people prefer to take the risk. You just need to be aware that the jewelry you stack will start looking dull faster. And if you are stacking gemstone jewelry, you may damage gems faster, especially if you mix gemstones and diamonds. A "neck stack" (which is a lot of chains and necklaces combined) can also get severely tangled, sometimes resulting in chains to snap. If you are ok with having scratched and tangled jewelry, go for the stack. Just know the look comes at a price. Avoid stacking any softer stones, like pearls or opals. How to Maintain Your Fine Jewelry Fine jewelry requires a lot of maintenance to last. If you aren't willing to care for your jewelry, don't be surprised when the "investment" piece breaks or looks dull after a few months. The easiest way to maintain its beauty forever is to avoid any of the activities listed above. You should also get a professional assessment at least once a year or any time something doesn't feel right. There are certain things you can check at home regularly: Check if your gemstones are secure: gently move your finger over the stone to check if it's loose. Asses your clasps: clasps can weaken with frequent wear, so make sure you check that closures and clasps work well periodically. Look out for chips: if you notice a small chip on your gemstone, make sure to take it in for further evaluation. Check the shape of your rings: if you happen to keep your ring on for one too many gym sessions, it could bend out of shape, which weakens its structure. If you notice anything looking off, make sure to get it looked at. I know you will probably continue doing a lot more activities with your jewelry on than recommended. If you choose to do so just know that damage is a common side effect. It's easy to blame it on quality and your jeweler. But if you went on a run in high heels, you wouldn't be surprised they aren't wearable afterwards. Same should be true for a fine bracelet you wear to the gym all the time.
By Paula Doebrich March 11, 2025
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