Is Just Breathe Very High Quality AAA+++ Beautiful for Home or Office Decor. In My Collection Over 20 Years. Exceptional and Beautiful Massive Dogtooth Calcite Crystal Cluster Museum Very High Quality Rare. The Front has the colors of White. They form through mineral precipitation of water-borne calcite. Spar is a general term for transparent to translucent, generally light-colored and vitreous crystalline minerals. Dogtooth Spars are calcite crystals grown in the scalenohedral crystal form. This form is long, pointed, and resembles the canine teeth of a dog which means an exceptional place, with calcite crystals in the dogtooth spar form, without. This Exceptional Cluster has Crystals all over the Cluster Front and Back. This Cluster has been in My Unique Collection over 20 years and Well Kept in My Gallery Cabinet. Triple AAA+++ Grade.