20 Pcs Rock Crystal Collection Natural Mineral Fossil Ore Ornament Gadget Crystal Precious Stones for Early Childhood Education Home Decor Crystal, Crystal

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• EXAMPLES OF LESSONS: You can get 20 different minerals, each of different shape and size, so you can understand the colorful world of natural crystals.
• COLLECTIONS Each gemstone is carefully selected and surface polished to ensure a long-term collection, ideal for the novice or experienced gemstone collector.
• Material: these stones are made from mixed natural minerals and measure approximately 10-18mm.
• APPLICATION PLACE: This mineral set can be used as DIY, window decoration, office or garden, different colors, fresh and beautiful, natural and environmentally friendly.
• PERFECT GIFT: This is a special gift for children, which can lead them to understand the relevant knowledge about geology, expand their horizons and gain knowledge.