Large "Puffy" Green Aventurine Heart Turquoise is a hydrated mineral

Turquoise is a hydrated mineral that contains both copper and aluminum

Size: 2 x 2 in

No one is positive about how this tektite has formed

Azurite is a vibrant blue copper-based mineral

including Archaeopteryx

Large "Puffy" Green Aventurine Heart Turquoise is a hydrated mineralSize: 3. 0 in. Weight: 8. 3 oz Green Aventurine is a variety of translucent quartz that contains inclusions. Light entering the mineral reflects off these inclusions. This is known as "aventurescence" and is present in other minerals. Aventurine is derived from the Italian word "venture" meaning chance. Green aventurine contains chromium rich mica known as fuchsite. Other colors of aventurine can be caused by inclusions of lepidolite, hematite,