This is a fabulous specimen of terminated Kyanite blades

are increasingly rare and valuable among collectors

The classification and mineralogy performed by R

Color: Vibrant Bright Green Yellow

Aegirine on Microcline Crystal | 80.4 grams | Large Specimen | Poudrette Quarry, Mont-Saint-Hilaire, Canada NWA 978 This is a fabulous specimenAegirine, also known as acmite, is a rare and stunning black mineral. It is found in many locations around the world, and this outstanding specimen comes from the Poudrette Quarry at Mount Saint Hilaire, where it is often found in association with Microcline. 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