Awesome HUGE Greenish Blue to Bronze Tanzanian Umba Color-Change Sapphire Rough! The shift in color for this stone is not very significant in my opinion but the stone does go towards a more Bluish Green/Amber in daylight. The stone is extremely clean; however, it does have a few surface feathers that you may connect to divide the stone up into two pieces with a roughly 65/35 split relatively close to the color separation. The two separated sections should be relatively free of feathers; however, it is important to note that this stone does have what appears to be Asterism/Chatoyancy prevalent throughout it. We haven't seen a stone with such from Umba in this size in the past and we are confident this will yield an exceptional gemstone with proper orientation and cutting.

We would ideally suggest Cabbing this stone for obvious reasons; however, this stone can also be faceted. I think a cabbed stone would be considerably more rewarding because of the phenomenon exhibited by the stone but that is something you will have to decide on. This was purchased at a discount and we are passing the savings on to you. I don't know where else you can get Umba Sapphire at $20 Per Gram!

1. During our recent trip to Tanzania we were informed that there was an outbreak of violence at the Umba Sapphire mines and that at least one person had been killed bringing most mining to a halt. I'm confident that mining has been restarted; however, production is nowhere near what it once was and prices continue to escalate.