Colorless calcite with dusting of red-brown iron Aquamarine Inclusions make the point near-opaque

Inclusions make the point near-opaque in the top third but translucent below this

with green coloration in some areas also caused by epidote

with more irregular stepped ends on the striations of the main crystals

25 x 3 x 1

Specimens including this one feature unusual "tutus" of quartz or chalcedony growth on some of the spires—in this case it has curiously taken on a square shape and banded agate appearance

Colorless calcite with dusting of red-brown iron Aquamarine Inclusions make the point near-opaqueLocale: Santa Eulalia, Chihuahua, Mexico Approx dimensions: 4 x 3 x 1. 25" Approx weight: 388g This calcite specimen from Santa Eulalia has a layer of calcite druzy with several larger modified rhombohedral calcite crystals perched atop. The druzy is well formed, composed of interlocking calcite crystals. The piece appears finely dusted with cinnamon brown color: this is hematite which causes the red and brown coloration of the mineral. UV reactivity