Choose a lens
Magnified 40x
These are not icicles: They’re liquid inclusions , seen under magnification in a tanzanite. - Photo by Dr. E. J. Gübelin/GIA
This is a hexagon-shaped inclusion in a tanzanite, made of the mineral hematite. It has a series of cracks around it, called a halo. - Photo by Dr. E. J. Gübelin/GIA
This looks like scratched glass, but it is tanzanite with many cracks, or fractures. - Photo by Dr. E. J. Gübelin/GIA

more to see and do