Jadeite vs nephrite
Yves Lemay | Jun 19, 20
Although famous for its green, pure jade is actually white, with impurities forming green, red, yellow, pink, white, violet, orange, blue-green and brown. Jadeite is usually more vivid in color than nephrite. Jadeite is the only one that produces the highly prized emerald green jade called Imperial Jade.
Yves Lemay | Jun 17, 20
The name iolite comes from ios, the Greek word for violet. Like sapphire and tanzanite, its fellow blue gemstones, iolite is pleochroic- meaning it transmits light differently when viewed from different directions. The Vikings made iolite's pleochroism a virtue by using thin slices of the stone as a light polarizer to navigate their trips.
Yves Lemay | Jun 15, 20
Garnet colors and varieties
Garnet comes from the Latin word granatus, which means grain. That is because many garnet deposits are small grains of red crystals in or on their host rock. Garnets have several species, as well as several colors and varieties.
Yves Lemay | Jun 12, 20
Agate, jasper, picture stone, and other cryptocrystalline quartz
Dendritic, moss, bloodstone, chalcedony, carnelian, chrysoprase, tiger eye, onyx.
Yves Lemay | Jun 10, 20
Is citrine topaz?
Citrine, yellow to red-orange quartz, was once the Rodney Dangerfield of the gem world; its sheer abundance being responsible for this "no respect" treatment.
Yves Lemay | Jun 08, 20
Named for the only locale in which it is found, the Charo River Valley in the former Soviet Union, Charoite is one of the few gems that is so distinctive in its color and patterns that a gemologist can feel justified in making a "sight" identification.
Yves Lemay | Jun 03, 20
It is a popular gem that wears well, is readily available and moderately priced.