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Running an HCA calc using HRD certification

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ukstipe

Rough_Rock
Joined
Jun 4, 2003
Messages
18
Quick question. HRD reports do not give total depth percentage. They do however give pavillion %, crown % and girdle %. If I add them up do I get something similar to a GIA/AGS total depth %?
 

Giangi

Ideal_Rock
Joined
Jan 23, 2003
Messages
2,530
It's even simpler...
Height : (Diameter1 + Diameter2)

E.G.

4.05 : (6.50 + 6.60)
=
4.05 : 6.55 = 0.618 = 61.8%
 
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