Chocolate dogtooth calcite, large Dragon's Blood Jasper On the back is a

On the back is a messy mix of semi-formed glossy yellow-tinted crystal and white honeycomb mineral

so they appear dark gray until you look closer and see swirls of red and lime green

or knobby "ear" with raised rims of concentric banding

25 x 1 x 1"

Where points have broken

Chocolate dogtooth calcite, large Dragon's Blood Jasper On the back is aLocale: Santa Eulalia, Chihuahua, Mexico Approx size: 4 x 3 x 2. 5" Approx weight: 652g (about 1 1 3 lb) Known by the trade name "chocolate dogtooth calcite," this type of calcite from the famed Santa Eulalia mining district grows in hedgehog clusters of sharp dogtooth (scalenohedral) crystals. The variety gets its distinctive opaque brown appearance from iron oxides; a layer of hematite included calcite is deposited on the surface during a later