Olena – Research Credit

Petrified wood is a fossil in which the original wood has been replaced by minerals, mostly quartz, while keeping its rings and grain. Silica-rich pieces …

Agate is a banded variety of chalcedony (microcrystalline quartz), built up in fine layers inside gas pockets in volcanic and metamorphic rock, and it typically …

Moonstone is a variety of the feldspar minerals orthoclase and albite, prized for adularescence – the floating, moonlight-like sheen created by microscopic layers of the …

Everything you need to know about emerald – how it forms underground, how to spot a real one, what drives its price, and where to find it in the U.S.

Everything you need to identify real jasper, find it in the U.S., and know what it’s worth – one complete guide with tables and a quick ID test.