The rough was sourced in Zimbabwe & was handcut by Alan Poultney in the 1980's
 
The heliodor (yellow beryl):
 
Invent No: AP0G56
 
Estimated weights colours & clarities
Estimated weight: 0.51cts
Cut: fancy step cut
Estimated Colour: transparent yellow
Colour  Distribution: even
Hue: Intense
Tone: strong
Estimated Clarity: LI  (Lightly Included)
Brilliance: 98%
Girdle: ground not polished
Dimensions: 10.92mm x 3.19mm x 2.65mm    
                           (Length x Width x Depth)
Refractive Indices: 1.567  -  1.590
Specific Gravity: 2.63 - 2.91
Hardness: 7.5 - 8
Orign: Zimbabwe Africa
Treatment: No eveidence of heat treatment.