For your consideration is a Ready-to-Dop 6.9ct Zircon triangle preform.
 
NOTES:
This stone currently is a reddish brown color. Zircon is one of the few gems that can be heated at home on a stovetop or hotplate, often producing a bright red or pink color. 
 
*Please refer to the photos/video for color and clarity details.
 
Mineral: Zircon
Origin: Tanzania
Weight: 6.9 ct
Dimensions: 10.5mm x 10.5mm x 5.5mm 
Clarity: Clean