3.5" x 3" Malachite Slab—Polished & Natural

New old stock faceted glass stones from an American costume jewelry manufacturer that closed decades ago. These stones were never set into jewelry — they have been sitting in storage since the 1950s–1980s, waiting for the right hands.Dark green, oval...

Clear calcite specimen from the Manaoshan Mine, Hunan Province, China. About 1.3 by 1.3 inches. The calcite is crystal clear with internal pyrite speckles that catch light brilliantly from inside the stone. The surrounding matrix has colorful iridescent chalcopyrite inclusions...

Rainbow hematite specimen from Graves Mountain, Georgia, about 1.25 inches long. Blue, green, purple, gold, and red are all visible in this piece depending on how you hold it. The color is not a coating. It is a natural optical...

Benz calcite specimen from the Daye Mine, Hubei Province, China. 1.5 by 1.25 inches. A perfectly formed triangular pyrite crystal sits perched on top of translucent calcite, a natural geometric formation that looks almost engineered but is entirely the result...

Small muslin bag of raw black tourmaline crystals, also called Schorl. Each piece is a natural prismatic crystal with the characteristic fine parallel lines running along its length. Deep opaque black. Not tumbled or polished, so the natural crystal form...