These are rough Colombian emeralds that were mined about 25 years ago and I bought them from a wholesaler as "old stock". The quality and color is very good. These polish up really well and are good for tumbling or lapidary use. These stones mine rough, so there is some matrix rock still attached to the stones.
I am offering 50 carat lots of pieces (10 grams). I will pick out the pieces with the best color and most emerald remaining for each lot. I currently have about 250 grams of this material and will pick out the best pieces for each buyer. When I get down to pieces that are mostly matrix rock, I will lower the price or pull them from the store entirely. Each lot will have anywhere from 3-10 pieces, depending on the size of each piece - which varies from lot to lot.
Refer to the photo. The black centimeter cube is shown for scale and is not included. You are purchasing a lot of 10 grams selected from the larger lot shown.