Article Grading: The following comments were left by the quality and importance raters: (edit ยท refresh)
Only real relationship to gemology is the 'variety' kimberlite which is the source rock for most diamond mining.SauliH 05:02, 4 February 2007 (UTC)
Categories: Gemology and Jewelry articles with comments | WikiProject Gemology and Jewelry - Gemstones | Stub-Class Gemology and Jewelry articles | Low-importance Gemology and Jewelry articles