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La texture trapiche de l‘émeraude colombienne et du rubis birman

Pignatelli, I. ; Giuliani, G., Le Règne Minéral

La texture trapiche de l‘émeraude colombienne et du rubis birman

Pignatelli, I. ; Giuliani, G.

Le Règne Minéral, 2018, 144, 39-52

Abstract :

Colombian emeralds and Burmese rubies with a trapiche texture are prized by the gem traders for their beauty and rarity. However, this texture is also an important geological marker that records the variations of the physical-chemical parameters during the crystal growth. Recent scientific advances on the trapiche texture showed that its formation is due to the complex structural geology of the deposits, but also to the crystal symmetry determining the number of equivalent growth sectors in the texture.




publié mardi 27 novembre 2018