Green Kyanite 9x13-12x16mm Top Drill Irregular Flat Drop - 15-16 Inch Mexican Zebra Jasper or merlinite

or merlinite

The most precious Fire Opal has flashes of iridescence and is known as Precious Fire Opal or “Firmament Stone

Selenite is a crystal formed from the mineral gypsum

A variety of Andalusite

This variety of opal is named "dendritic" for the small inclusions within it that resemble moss or ferns

Green Kyanite 9x13-12x16mm Top Drill Irregular Flat Drop - 15-16 Inch Mexican Zebra Jasper or merliniteKyanite often occurs as long, bladed, striated crystals, transparent or translucent with a pearly luster. An aluminum silicate mineral, it may appear in white, pink, yellow, orange, green, blue, gray and black. In addition to its value as a gemstone, Kyanite is also extremely useful in industrial applications due to its high heat resistance. It is often used in kiln furniture and foundry molds, as well as for brake shoes, grinding wheels and cutting