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: APD302P 0001
 
Estimated weights colours & clarities
Estimated weight: 2.22cts
Cut: oval mixed crisscross cut
Estimated Colour: transparent brown red
Colour  Distribution: even
Hue: dark
Tone: dark
Estimated Clarity: LI - MI  (Lightly - Moderately Included)
Girdle: polished
Brilliance: 65%
Dimensions: 9.0mm x 7.19mm x 5.57mm    
                           (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 eveidence of heat treatment.