Gemstones

General

Edu

Gem encyclopaedia - GIA
Quick Diamond Search - Rapaport Trade
Guides - Rapaport Trade
Diamond - Wikipedia
GemCad - Blogspot
AFLOW - Encyclopedia of crystallographic prototypes
Diamond
Moissanite

Certification

GIA - report check
IGI - report check
HRD - Diamond grading report
GIS - Diamond reports
GSI - report check
SCS Global Services - Sustainability report
GRA - several sites. Scan the card and enter the report number

Tools

Gem Cut / Gem Ray

3D models

Google Sites

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