Dendritic inclusions (mode of formation unknown) in an unheated dark blue magmatic-related sapphire
Micrographs

Dendritic inclusions in an unheated magmatic-related sapphire from Attapeu province, South Laos

 
Dendritic inclusions (unknown type of formation) in an unheated dark blue magmatic-related sapphire from Attapeu province, South Laos, on the border of Vietnam and Cambodia.
 
Micrograph width: 0.87 mm.
 
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