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Fine Jewelry University Articles matching: “alternative metals”

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Gem in the Spotlight: Tourmaline

FJU Category: Gemstones | Tags: Colored Gemstones, Folklore, Gem Spotlight, Gemology, Jewelry History, Tourmaline

… effect, believed it to be related to the Philosopher’s Stone. The Philosophers Stone is a mythical material thought to have the power to grant enlightenment, give power over spiritual affairs, reconcile opposites, and change base metals to gold. Tourmaline has a special place in our hearts as California natives because it is one of the few gems that are found right here in the Golden State. Tourmaline was first discovered in California in 1892. It quickly became known as…
How to Sell Your Jewelry

FJU Category: Selling Jewelry | Tags: Consumer Protection, How To, Jewelry Buying, Selling Jewelry, Tips and Tricks

… the alloys. 14 karat is 14/24 or .583 gold and 18 karat is 18/24 or .750 gold. Platinum most of the time is 90% pure and 10% alloy. Silver jewelry is usually sterling, which is .925 pure. The three units of weight used with precious metals are troy ounces, pennyweights, and grams. The troy ounce is equal to 20 pennyweights (DWT) or 31.15 grams (learn more about measure precious metal weights ). So here is an example; say the spot price of gold is $300 and a 14K ring …