Bicolor Blue & Green Tourmaline with Quartz Crystals on a Feldspar Matrix thumbnail Cassiterite crystals on cleavelandite are

Cassiterite crystals on cleavelandite are rare and highly sought after by mineral collectors

The vial is roughly 8 cm with the cork

UV reactive under 365nm long wave (orange)

chlorite included quartz crystal plate with gorgeous luster and a few rainbows

Willemite fluoresces green and calcite pink/orange/red

Bicolor Blue & Green Tourmaline with Quartz Crystals on a Feldspar Matrix thumbnail Cassiterite crystals on cleavelandite areBeautiful bi color blue and green tourmaline crystal with quartz crystals on a matrix of white feldspar. There is some minor Muscovite mica present. The tourmaline crystal has a flat termination at the lighter color end. Size: 70 x 50 x 46 mm. 106 grams From Shigar Valley, Pakistan