Chocolate dogtooth calcite, large Dragon's Blood Jasper so they appear dark gray

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

and then through geological processes the aragonite was replaced with dolomite

25 x 1 x 1"

Approx weight: 42g

Chocolate dogtooth calcite, large Dragon's Blood Jasper so they appear dark grayLocale: 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