SOLD
 
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: APD302E 0004
 
Estimated weights colours & clarities
Estimated weight: 4.04cts
Cut: trilliant step cut Estimated
Colour: transparent grey blue
Colour Distribution: even
Hue: medium
Tone: light Estimated
Clarity: LI (Lightly Included)
Girdle: polished Brilliance: 90%
Dimensions: 13.39mm x 8.89mm x 6.58mm
(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.