Corundum crystal - High Resolution Images

A rock from which corundum crystals were isolated

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【Jewelry Knowledge】 Overview of Corundum Gemstones (Ruby and Sapphire)

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Corundum crystals in tumbled rock

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Ruby crystal quartz, natural rough red ruby corundum crystals on quartz matrix, from Afghanistan

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Brown corundum crystals on raw phlogopite stone on white

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Corundum crystal, variant of ruby.

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Corundum crystals in white raw gneiss

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What are the differences in the growth of crystals such as corundum, spinel, mullite, and periclase?

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Large crystals of ruby (red corundum) growing on surrounding rock

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Set of various natural mineral stones Corundum crystals in rocks isolated on white background

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>> Type: Corundum, Oxide

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Pebbles with isolated corundum crystals

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Blue corundum sapphire crystal

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[Original text: So this is what corundum is?

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Corundum, also known as corundum, is a naturally occurring α-type aluminum oxide crystal.

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Photo of corundum crystals on brown algae stone

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Sapphire single b crystal rough stone each 100 grams 5~10 mm blue corundum single crystal rough stone specimen

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Corundum - Crystal Optics Virtual Simulation Laboratory

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Is this what corundum is?

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Blue corundum sapphire crystal

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Dong's jewelry corundum crystal raw materials artificial synthetic gem raw materials corundum rough stone loose stone cutting

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Afghanistan red corundum natural mineral crystal ore specimen collection ornamental ornaments original stone geological science popularization

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Ruby pendant ornaments hand-held pieces hand-played loose stone ruby with punched pendant strip No. 5 red corundum crystal

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Is this what corundum is?

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What is the crystal structure and atomic bonding method of corundum and sapphire?

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