For your consideration is a 21ct Chrome Diopside facet rough.
 
NOTES:
This stone has an intense green color. Great clarity, this will facet a clean stone.
 
*Please refer to the photos/video for color and clarity details.
 
Mineral: Chrome Diopside 
Origin: Believed to be Brazil (unconfirmed)
Weight: 21.0 ct
Dimensions: 16.5mm x 16.5mm x 8.5mm 
Clarity: Clean