Hollandite inclusions in quartz

Weight: 3.34 ct
Size: 11.6 x 10.9 x 6.6 mm


Very nice black acicular inclusions of hollandite in almost colorless quartz, forming perfect “sea urchins”. While all sampled of hollandite inclusions normally come from Madagascar, this stone is different!
It was faceted from a piece of very lightly colored amethyst from Brazil (“rose de France”) and for a long time it was classified as “unknown” on our site. Finally, we performed SEM-EDX analysis of a small part of rough with identical inclusion reaching the surface and it gave us clear hollandite composition!

Cut: fancy step cut
Origin: Brazil

Rough material:

Hollandite in quartz rough