Apatite (CaF) / Fluorapatite
Megiliggar Rocks Breage, Mount's Bay Dist.
1.8 x .3 x .3 CM (thumbnail)
Gem clear crystal in fine condition from this classic Cornish location. The crystal includes a crude but distinct internal "helix" pattern which adds considerable interest. A fine small specimen with delicate pale blue color and glassy luster.