Corundum (var: Sapphire) (Bi-color Twin) Bolivia metallic colorless "strands" of the super

colorless "strands" of the super rare phosphate Metavauxite

Minor edge wear

Specimen #PREH31115

Lovely bright blue-green crystals of Amazonite with sharp faces and fine luster free of matrix

Corundum (var: Sapphire) (Bi-color Twin) Bolivia metallic colorless "strands" of the superGood Sapphire crystals are hard to find, twins are even more rare, but finding true bicolor twins is off the charts. Now I say true bicolor twins, because I dont really count a twinned crystal with varying degrees of blue as being multicolored necessarily. Theres no mistake with this piece as the color contrasting is about a defined as it gets for Sapphire. Ive seen twinned Sapphires with blue and yellow hues in the same crystal, but I dont know if I