TIM4 Aquamarine on Quartz
Huanggang Mine, Hexigten Banner (Keshiketeng Co.), Ulanhad League (Chifeng Prefecture), Inner Mongolia Autonomous Region, China
7.6x 2.5x 2.1 cm
$600

One of the surprises at Huanggang was the presence of aquamarine crystals.  Although the mine cluster is exploiting a skarn, there is a pegmatite intrusion present.  It is from that pegmatite that these aquamarines have been coming.

 

This is a rare matrix example, one of only about 3 that I have seen, and I have to say its overall condition is better than either of the others.  The aquamarine is terminated, and of a decent size-- the others (on matrix) were basically match-stick width, and the quartz crystals on which they rested were in rough condition.  Again, that contrasts to this piece, where the smoky quartz is fully terminated with lustrous lateral faces.

 

The termination is deep blue, the rest (as with all of these) has a whitish rind-- probably due to etching that is causing the light to diffuse.








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