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| The Great Andesine Scam by Gary Kratochvil copyright 2008 |
| Drilling For Oregon Sunstone by Gary Kratochvil copyright 2008 |
| GIA Colored Stone Grading System by Jeff R. Graham copyright 2007 |
| Additional comments on the GIA Colored Stone Grading System by Gary Kratochvil |
| Common Sense Gemstone Grading by Jeff R. Graham copyright 2007 |
| Grading Oregon Sunstone by Jeff R. Graham copyright 2007 |
| My Experience With TZ-Gems by Gary Kratochvil |
| Sapphire Faceting Machine made by Arrow Profile Company |
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