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Fine Jewelry University
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Measuring Gold Weight
…both to a uniform system. A gram or gramme is a standard metric unit of mass. An avoirdupois ounce converts to 28.34 grams approximately. The troy ounce is 31.1 approximately. You say, “Aha! Gold weigh more, so a pound of gold weighs more … system, but not in the troy. In the Troy system only 12 ounces equal a pound. So a pound of feathers weighs 453.59 grams approximately and a pound of gold weighs 373.24 approximately. So a pound of feathers weighs more then a pound of …
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How to Sell Your Jewelry
… daily spot price) multiplied by purity(the true noble metal content) times weight(can be in ounces, pennyweights or grams) . The purity is the karat of gold or percentage of noble metal (gold, platinum, silver). 24 karat is pure. 10 karat…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…
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Gem in the Spotlight: Opal
… opal of all time is “Aurora Australis”. It was found in 1938 in Australia’s Lightning Ridge. It is renowned for its extraordinary play of colors and its rarity. This opal is quite large, weighing approximately 180 carats (36 grams) and measuring 3 x 1.8 inches long. Its size and quality make it an exceptionally valuable gemstone. Care and Cleaning While opal’s enchanting colors may seem otherworldly, it is important to care for this delicate gemstone to maintain its …
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Types of Necklace Chains
… in Thailand, and it is named after a weight of silver (or gold) of the same name. One baht is approximately fifteen grams. Chains of this style have historically used S style claps for easy removal when trading. PROS Traditional Style – …
Blog Posts
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How Much is My Jewelry Worth?
… are: cash value, cash wholesale value, and scrap value. Let’s look at an example. Assume a ring is made out of 5 grams of 14k gold and it has a 0.25 carat diamond. It has a gold value, of approximately $121 when gold is $1,300 per ounce, …: $41.80 × 0.58 = $24.24 which is the price per gram of 14 karat gold. Multiply the per gram price by the number of grams in the jewelry item. So, you have: $24.24 × 5 grams = $121. Here’s the complete math for our example ring: $121 = $1,…
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Recycled Diamond Engagement Rings
… to produce that engagement ring in half by diffusing them over at least two owners. When you buy a recycled diamond, that’s one less diamond that needs to be mined. When you buy the recycled metal engagement ring, that’s a few less grams of ore that need to be processed. On top of the environmental benefits, when you buy a recycled ring you can save a significant amount over a new ring. The principal is the same as buying a new vs. a pre-owned car. Of course, the new …
