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Discover the fascinating world of gem polishing and rock tumbling with this USB-powered Gem Grinder – the perfect educational and creative tool for both kids and adults! Whether you’re a beginner learning geology or a hobbyist perfecting gemstones, this compact machine makes polishing stones easy and fun.
Operates safely with a standard USB power cable — no batteries required. Simply plug it into any USB port, power bank, or adapter.
Made from high-quality ABS material with a strong motor designed for smooth, consistent rotation.
Space-saving and lightweight with a stable base and non-slip pads for steady operation at home, classroom, or workshop.
Great for teaching kids about geology, rock formation, and polishing techniques while providing hours of hands-on enjoyment.
Comes complete with dual-language (Chinese & English) instructions, USB cable, and all essential components.
Specifications
Material: ABS Plastic
Power Supply: USB 5V (Cable Included)
Product Size: 21 × 16 × 17 cm
Package Size: 26.5 × 22 × 11 cm
Net Weight: 1586 g
Packaging:
1 × Gem Polishing Machine with Accessories
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