Blades of green epidote standing up through a bed of quartz crystals.
Material like this gets sold as forest epidote, which is a trade name rather than a species. It comes from the way the crystals grow, in upright sprays and thickets that read like undergrowth at close range. The mineral itself is epidote, and that is what is on the card.
Hold it at an angle under a lamp and the blades catch light one at a time as you turn it.
Mineral: Epidote (calcium aluminium iron silicate) with quartz (silicon dioxide, SiO₂)
Crystal system: Epidote monoclinic, quartz trigonal
Origin: Hakkâri Province, Turkey
Hardness: 6 to 7 on the Mohs scale; durable overall, though slender epidote crystals snap if knocked
Treatment: None
Dimensions: 19.5 x 1.7 x 15 cm
Weight: 905 g
You will receive the exact piece photographed.