Corundum var. Ruby, Cascade Canyon, San Gabriel Mountains, California 9.0 cm x 6.8 cm x 4.7 cm . Yes, Ruby from California.  This specimen is filled with ruby crystals, the largest being about 1.2 cm long. Each exposed face, shows many crystals in different sizes and have no doubt there are many more within. This specimen is filled with small ruby crystals, the largest… More info

Bi-color Sapphire / Ruby in Matrix, Mkuyuni, Uluguru Mountains, Tanzania 6.08 cm x 4.32 cm x 2.12 cm, 67.6 grams Here is a very interesting specimen of Bi-colored Corundum in matrix from Tanzania. It looks similar to a Winza Sapphire / Ruby.  The matrix does not appear to be correct for Winza, however the listed locale in in the same region, and so few crystals ever come out stil… More info