9x7mm Citrine Studs ff2830cad20dd23666df7583044d8aa7 As the shells of the

As the shells of the creatures accumulated on the sea floor

500 years ago

or in very rare instances

Amazonite is a variety of microcline feldspar known for its opaque blue-green color

In some instances all the organic matter has been replaced by minerals (usually a silicate

9x7mm Citrine Studs ff2830cad20dd23666df7583044d8aa7 As the shells of theFrom 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