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Gemstones: A Concise Reference Guide
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Gemstones of the World: Newly Revised Fifth Edition
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NATIONAL GEOGRAPHIC Super Gemstone Dig Kit - Excavation Gem Kit with 10 Real Gemstones for Kids, Discover Gems with Dig Tools & Magnifying Glass, Science Kits for Kids Age 8-12, Crystals for Kids
ICAI Beads
Gorgeous Natural Gemstone Smooth Round Loose Beads 8mm Approxi 15.5 inch for Jewelry Making, Colorful Stone, 4mm