Calcite can also appear in various hues

2 grams and measuring 79x66x11mm

Origin: Tory Hill

They measure 35x27mm

This gorgeous black and white slice displays very well with one side expertly polished and the other left untouched

Aegirine Crystal | 4.0gr | Mont-Saint-Hilaire, Québec, Canada Impactite Calcite can also appear inAegirine, also known as acmite, is a rare and stunning black mineral. It is found in many locations around the world. Aegirine is usually black, greenish black, or brownish black in color and has a glassy or vitreous luster. It has a hardness of 6 to 6. 5 on the Mohs scale, which means it is relatively hard and durable. Aegirine is also known for its straight, needle like crystals that can grow up to several centimeters in length. Aegirine is believed