Specimens of chrysocolla found in Peru. Chrysocolla is a hydrated copper silicate mineral often appearing vibrant blue in colour . It is an ore of copper, albeit a minor one. The name comes from the ancient Greek word chrysos, which means gold, and kolla, meaning glue, as it was used to solder gold, and was first used by Theophrastus in 315 BC. Chrysocolla rarely if ever appears in a visible crystal form. It is almost always in botryoidal, reniform, or stalactitic masses and crusts & as vein infillings. Specimens are supplied in a 2" x 2" white card tray with an information label.