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Jewelry

Articles made from precious metals and often set with gemstones that are worn on the body for personal adornment.

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Jewelry > Gemstones

emerald

Jewelry; Gemstones

Emerald is a gemstone, and a variety of the mineral beryl, colored green by trace amounts of chromium and sometimes vanadium. Beryl has a hardness of 7.5–8 on the 10-point Mohs ...

diamond

Jewelry; Gemstones

Diamond is renowned as a material with superlative physical qualities, most of which originate from the strong covalent bonding between its atoms. In particular, diamond has the ...

sapphire

Jewelry; Gemstones

Sapphire (Greek: σάπφειρος; sappheiros, 'blue stone') is a gemstone variety of the mineral corundum, an aluminium oxide (α-Al2O3). Trace amounts of other elements such as ...

ruby

Jewelry; Gemstones

A ruby is a pink to blood-red colored gemstone, a variety of the mineral corundum (aluminium oxide). The red color is caused mainly by the presence of the element chromium. Its ...

peridot

Jewelry; Gemstones

Peridot is one of the few gemstones that occur in only one color, an olive green. The intensity and tint of the green, however, depends on how much iron is contained in the ...

sunstone

Jewelry; Gemstones

Sunstone is a plagioclase feldspar, which when viewed from certain directions exhibits a brilliant spangled appearance; this has led to its use as a gemstone. It has been found in ...

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