9x7mm Citrine Gemstone Pendant 2d45cdc1bc7f9653e2d740b6c147a1fb Clams are a very good

Clams are a very good example of what is referred to as a "living fossil"

making them the most diverse animal life form that ever existed on earth

The most famous source of fire opals in Mexico is in the state of Queretaro

Around 1800 it was discovered that sapphires are a gem variety of corundum

Malachite is also found as a pseudomorph

9x7mm Citrine Gemstone Pendant 2d45cdc1bc7f9653e2d740b6c147a1fb Clams are a very goodFrom the Latin word "citrus citron tree", Citrine is a variety of Quartz and a semiprecious gemstone known for its yellow to golden brown color. It is composed of silica (SiO2) and iron oxide inclusions that cause the yellow hue of the crystal. Natural Citrine has been exposed to heat (typically from the earth's core) during its formation, rather than Heat Treated Citrine, which has been exposed to heat after mining in order to enhance color (heat