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Site Contents

• Gems 101
• Anniversary Gems
• Birthstones and Zodiac Stones
• Book and Reference Shop
• Chakra Gems
• Chelsea Filter Reactions
• Crystal Systems
• CSI: Colored Stone ID by Properties
• Diamonds: The 4 C's
• Diamond Cutting: The "C" that Counts!
• Dictionary of Diamond Terminology
• Dictionary of Jewelry Terms
• Estimating the Carat Weight of Mounted Gems
• Gems for Days of the Week
• Gemstone Phenomena
• Mohs' Scale of Hardness
• Official State Gems of the United States
• Synthetic vs. Imitation Gemstones
• The Phenomenon of Tenebrescence, seen in HACKMANITE
• Treatments and Enhancements
• Useful Links