Size:  7x6mm

has a greasy feel

Color: Gray

Dimensions: 57x59x36 mm / 2

Color: Change Green to Purple*

Tetrahedrite, Pyrite, Calcite and Siderite Crystal Cluster | 36.5 Grams | Lima, Peru Tetrahedrite Size: 7x6mmThis is a beautiful cluster of metallic black and blue tetrahedrite, small crystallized pyrite matrix, calcite and brown bladed siderite. This top specimen is in very good condition. Would be a beautiful addition to any new or existing collection. Name: Tetrahedrite, Pyrite, Calcite and Siderite Crystal Cluster Specimen Size: Miniature Sized Dimensions: 36x36x32 mm 1. 4x1. 4x1. 3 inches Weight: 36. 5 Grams 1. 3 oz Origin: Mined in Lima, Peru