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Fine Jewelry University Articles matching: “Black rhodium plating”
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Fine Jewelry University
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Gem in the Spotlight: Jade
…high polish. Nephrite is commonly found in a darker olive green color but can also be very light green, orangey-red, black, and yellowish green. Jadeite can come in many different colors including pink, purple (often called lavender jade…
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Gold Purity and The Differences Between White and Yellow Gold
… real solid gold. For example, a plated piece can be stamped: 14k HGE or 18k GE. HGE means hydrostatic gold electroplating. Plated gold is measured in how many molecules of gold are around the ring. In other words, a plated piece of jewelry …
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Platinum
… appear on platinum. However, due to the metal’s durability there is usually little metal loss from the scratch. If visible scratches do appear, your jeweler should be able to polish the piece. Platinum is usually then plated with rhodium to give it a bright finish
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Gem in the Spotlight: Spinel
… underappreciated gemstone of all time. Spinel has been mined for over a thousand years, but until 1783 it was confused with more well-known stones like ruby and sapphire. One of the most famous examples of this confusion was with the Black Prince’s Ruby. This stone currently sits at the front of the Imperial State Crown of the United Kingdom. When it was given to Edward of Woodstock in 1367 it was thought to be a ruby. It wasn’t for nearly 400 years that it was …
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Gem in the Spotlight: Ruby
… significant sources of rubies include Thailand, Vietnam, Sri Lanka, Tanzania, Mozambique, and Madagascar. Before modern gemology, for thousands of years, garnets, rubies, and spinel have been mistaken for each other. Famously, the Black Prince Ruby (formerly thought of as the largest cut ruby) at the center of the British Imperial State Crown, is actually a red spinel. History and Lore of Ruby The first discoveries of ruby date back to 2,500 B.C. They were found …
