Peridot Found in lava, meteorites, and deep in the earth’s mantle, yellow-green peridot is the extreme gem Peridot (/ˈpɛrɪdɒt/ or /ˈpɛrɪdoʊ/) (sometimes called chrysolite) is gem-quality olivine and a silicate mineral with the formula of (Mg, Fe)2SiO4. As peridot is a magnesium-rich variety of olivine (forsterite), the formula approaches Mg2SiO4. ABOUT PERIDOT The ancient Egyptians […]
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Mar
Mar
FANCY COLOR DIAMOND Dazzling brilliance. Captivating color. The planet’s most valued gems are fancy color diamonds. ABOUT FANCY COLOR DIAMOND Gem diamonds in GIA’s D-to-Z range usually decrease in value as the color becomes more obvious. Just the opposite happens with fancy color diamonds: Their value generally increases with the strength and purity of the […]
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Mar
Mar
DIAMOND Diamond are among nature’s most precious and beautiful creations. Diamond forms under high temperature and pressure conditions that exist only about 100 miles beneath the earth’s surface. Diamond’s carbon atoms are bonded in essentially the same way in all directions. Another mineral ABOUT DIAMONDDiamond forms under high temperature and pressure conditions that exist only […]
27
Mar
Mar
Emerald is the bluish green to green variety of beryl, a mineral species that includes aquamarine. Gem experts differ on the degree of green that makes one stone an emerald and another stone a less-expensive green beryl. ABOUT EMERALD Gem experts differ on the degree of green that makes one stone an emerald and another […]
27
Mar
Mar
Rubies can command the highest per-carat price of any colored stone. This makes ruby one of the most important gems in the colored stone market. In its purest form, the mineral corundum is colorless. Trace elements that become part of the mineral’s crystal structure cause variations in its color. Chromium is the trace element that […]
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Oct
Oct
AMBER Amber is nature’s time capsule. This fossilized tree resin contains remnants of life on earth millions of years ago. ABOUT AMBER The Greeks called amber elektron, or “made by the sun.” Homer praised its bright glow. The Egyptians buried it in tombs for the afterlife. Today’s scientists value amber too: it provides a three-dimensional […]
13
Oct
Oct
Ametrine
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Oct
Oct
Polished amethyst
03
Apr
Apr
Polished alexandrite
03
Apr
Apr
Polished – diamond
03
Apr
Apr
Citrine
03
Apr
Apr
Polished aquamarine
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