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1ng silica from sand or quartz was discovered by Japanese scientists a :decade ago to have a terahertz vibration frequency which lies between that of microwaves and far infrared li°/不∵ght 1三on the electromagnetic spectrum with its三: frequency ranging from 0
Material: AgateSize: approximately 2-3in (5-7
approximately 1in(2
Width: approximately 7-8
Small Obsidian Crow Skull Carving Wholesale Cordierite 1ng silica from sand orMaterial: Obsidian. Size: approximately 2. 3*1in(6*2. 5cm). MOQ: 10pcs. Color: as the picture. Quality: as the picture
US$ 25.53
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