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Fine Jewelry University Articles matching: “Sapphire types”
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Fine Jewelry University (Show All FJU Articles)
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Caring for and Cleaning Your Jewelry
…. Some anti-bacteria cleaners can also degrade the solder used in jewelry, be careful of long exposure to these types of soaps (people in the medical professions especially). It is safe to use an ultrasonic cleaner with diamond jewelry. … get scratched by things like hard toothbrushes and dirt (most dirt ranges 4-8 on the Mohs scale). Several different types of settings hold diamonds in the jewelry. From time to time gently touch the stone to see if it moves. If the stone …
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What to Do When Your Ring Irritates Your Skin
… and money trying different solutions if you don’t know what the true source of the problem is. There are two main types of irritation: 1) Physical irritation caused by the metal rubbing against the skin, and 2) allergic reactions to …
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Gem in the Spotlight: Tourmaline
… is one of the most beautiful gems that you’ve probably never heard of. Less popular than the likes of ruby or sapphire, tourmaline flies under the radar in the gem world and remains the best kept secret of gem collectors and connoisseurs who… it for hundreds of years. But, before the advent of modern gemology, most tourmaline was believed to be ruby, sapphire, or emerald. Gemology of Tourmaline Gemologically speaking, tourmaline is its own mineral and not a species or member of a…
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Gem in the Spotlight: Opal
…used in jewelry. For reference, here are the Mohs hardness values for some other gemstones you may know: Diamond 10, Sapphire 9, Amethyst 7, and Peridot 6. Turquoise is about as hard as opal, but you would need to consider Pearl or Amber (… them in water or let them dry out too quickly. Amazingly, hydrophane opals can hold up to 20% water content. Types of Opal Black Opal : Revered for its dark gray to blackish body color, black opal is a captivating gem found exclusively in…
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Gem in the Spotlight: Emerald
… of chromium and vanadium in the crystal structure. Emerald’s Mohs hardness rating is 7.5-8 making it softer than sapphire and harder than amethyst and other quartz varieties. The refractive index of emerald ranges from 1.57 to 1.58, making …text and wore them as talismans. Notable Emeralds Trapiche emeralds are one of the most rare and highly sought-after types of emeralds in the world. Their name originated from traditional grinding wheels used for milling sugarcane in …
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Synthetic Gems: The Whole Story
Ruby, sapphire, emerald and alexandrite are very beautiful gems and very rare in their stunning beauty. These four gems have been … thousands of years. But, what if anyone could own them? At gem shows and museums, I have seen jaw dropping rubies, sapphires and emeralds. These gems in high quality have put ownership beyond most people to justify the price. Just a one …to positively identify as synthetic. Both, I feel, are impossible to identify in a piece of jewelry. Synthetic ruby, sapphire, alexandrite and emerald are very complex because there are different ways to make them. The inexpensive way to make…
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Gem in the Spotlight: Iolite
…near the top of the list. Iolite’s color range of blue, blue-violet, and violet competes for public attention with sapphire, tanzanite, and amethyst. They may have name recognition, but iolite has a rich, unique color and great gem value on …. The Gemology of Iolite Iolite is the gem variety of the mineral Cordierite. Iolite was once known as a “water sapphire”. Dichroite is another synonym for iolite. Dichroite is a Greek word which loosely translates as two-colored rock. This …
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Gem in the Spotlight: Alexandrite
Emerald by day, ruby by night, more expensive than diamond and more illustrious than sapphire, emerald, or even ruby, alexandrite has been known around the world as one of the most sought-after gems for the … isn’t the only stone to display color-change phenomena. There are color-change varieties of many gems including sapphire, tourmaline, spinel, garnet, etc. Alexandrite is, however, the most famous for it. It is so famous, in fact, that color-…
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How to Sell Jewelry on eBay and Other Websites
… to add up all the cost of selling to set your price (the cost of the listing, how many times it takes to sell, shipping and supplies, insurance, the fees for credit card processing, other fees for things like appraisals, etc.). Two types of people shop online. First, there are the ones who are looking for something unique and are willing to pay a high price for it. Second, the others are looking for a great bargain, wanting only to pay the lowest price. If your jewelry …
