The following is a list of Subvitreous gems and minerals listed in our database. Click the pictures to get full data, click the X to remove the gem from the list.
Howlite: Howlite an opaque, massive mineral used for ornamental and utilitarian articles. is a rarity for collectors It has a monoclinic tabular crystal system with a subvitreous luster. The most common occurrence is in the form of a cauliflower. Howlite is found in borate deposits, with most ornamental pieces found from various sites in California (USA) and Mexico. It occurs as opaque white, and may be (read full)
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Zircon is a zirconium silicate with a tetragonal crystal system, and also contains thorium and uranium.
It appears as stubby, prismati
Phenakite is a rare beryllium silicate with a hexagonal crystal system. It an attractive hard mineral that resembles quartz.
It appear
Platinum is a rare and precious metal that occurs as a Native Element, one of the rarest in the Earth's crust.
It resembles silver, bu
Spinel is an extensive group of minerals in which magnesium may be replaced with iron, zinc, and above all, manganese. The hardness a