we offer smoky quartz. chemical composition silicon dioxide. color very wide color range -- colorless, yellow, brown, purple, pink, greenish. crystalline quartz often displays exotic color bands, swirls, and other patterns. refractive index r.i. 1.553-1.554. uniaxial positive. durability hardness 7. crystal structure hexagonal specific gravity 2.651 for crystalline material, up to 2.91 for crystalline. sources occurrence extremely widespread
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Adarsh Nagar, Jaipur, Rajasthan