Four Treasures Reference Database
Record No. 3356
Inside Out: Inclusions and the symmetry of crystals
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Hughes, R.W. (2005) Inside Out: Inclusions and the symmetry of crystals. Lotus Gemology, <https://lotusgemology.com/resources/articles/135-inside-out-inclusions-and-the-symmetry-of-crystals>
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corundum, inclusions.5, gems
A discussion of how inclusion patterns mimic crystallographic symmetry in ruby and sapphire.