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RUG PATTERN DESIGN LONG DOUBLE DANGLE EARRINGS
Cultured opals, often referred to as opalite, are created in laboratories. Pure opals that occur in nature take many years to develop. Mines of natural opals are found across the globe. In the Southwest United States, there are naturally occurring opal fields that are mined.
Jet is a product of high-pressure decomposition of wood from millions of years ago, commonly the wood of trees. Jet is found in two forms, hard and soft. Hard jet is the result of carbon compression and salt water; soft jet is the result of carbon compression and fresh water. Native American Navajo and Pueblo tribes of New Mexico were using regionally mined jet for jewelry and the ornamentation of weapons when early Spanish explorers reached the area in the 1500’s.Today these jet deposits are known as Acoma jet, for the Acoma Pueblo.
Is an alloy of silver containing 92.5% by weight of silver and 7.5% by weight of other metals, usually copper. The sterling silver standard has a minimum millesimal fineness of 925.
SILVER, for example 99.9% pure silver, is relatively soft, so silver is usually alloyed with copper to increase its hardness and strength. Sterling silver is prone to tarnishing, and elements other than copper can be used in alloys to reduce tarnishing, as well as casting porosity and fire scale.
Lapis Lazuli – Mines in northeast Afghanistan continue to be a major source of lapis lazuli. Important amounts are also produced from mines west of Lake Baikal in Russia, and in the Andes mountains in Chile. Smaller quantities are mined in Pakistan, Italy, Mongolia, the United States, and Canada.It is a stone prized for its intense blue color. The name Lapis Lazuli comes from the Arabic word lazward, from which the word azure comes, which means blue. Ancient Romans used to call it “sapphires,” which was subsequently applied to the blue variety of corundum we know today as sapphire.
Picture Jasper is an opaque, microcrystalline variety of Quartz with extraordinary color banding, veining and depositional flow patterns created by petrified or silicate mud and sometimes dendritic inclusions.