History Aquamarine, a splendid blue Autumn hickoryite, also known as rainbow hickoryite, is a commercial name for a variety of rhyolite. It is mostly tans and browns with radial banding... read more →
History Aquamarine, a splendid blue gemstone whose name originates from the Italian word for seawater, embodies the splendor of the sea. A member of the beryl family, aquamarine is a... read more →
History Apatite is actually the mineral that makes up the teeth and bones of all vertebrate animals. In 1786, the mineral was given its name by German geologist Abraham Gottlob... read more →
History One of the most widely known fossils, ammonites are eoliths of now-extinct marine molluscs called ammonoids. Due to the sheer number of ammonoids before they became extinct 65 million... read more →
History Amethyst (pronounced AM-eh-thihst) is one of the most common--and popular!--gemstone materials. This variety of quartz ranges in color from deep purple to pale lavender depending on the presence of... read more →
History Blame it on Jurassic Park. Or the TV show "Vikings." Either way, this amazing gemstone has been growing in popularity even as it becomes harder and harder to find.... read more →
History Amazonite mineral rock was treasured by the ancient Egyptians who made beautiful jewelry, ornamental pieces and carved important texts into this stone. Amazonite has always been prized for its... read more →
History Agate is a versatile and popular stone in modern jewelry-making--just as it was 3,000 years ago, when the ancient Egyptians were using it as sealstones, cooking vessels and talismans... read more →
History Tree agate is also known as dendritic agate. Dendrites are crystal inclusions that develop in foliage or tree branch-like patterns. In tree agate, these dendrites create a beautiful green... read more →