This tourmaline is from the Congo & was part of a parcel of rough tourmaline ethically sourced through our block supply chain & was hand cut by Alan Poultney.
 
The tourmaline:
 
Invent No: APD502P 0007
 
Estimated weights colours & clarities
Estimated weight: 9.42cts
Cut: cushion step cut
Estimated Colour: transparent brown/red
Colour  Distribution: even
Hue: dark
Tone: dark
Estimated Clarity: LI (Lightly Included)
Brilliance: 98%
Girdle: Polished
Dimensions:  12.79mm x 11.90mm x 8.91mm
                           (Length x width x depth)
Refractive Indices: 1.610  -  1.698
Specific Gravity: 2.82-3.90
Hardness: 7 - 7.5
Orign: Congo Africa
Treatment: No evidence of heat treatment