Great star rose quartz sphere with many rainbows

A star rose quartz sphere from Madagascar with a pronounced asterism star and many rainbow inclusions.

The six-rayed star is created by microscopically fine rutile needles in three crystallographically parallel directions. When a pinpoint light source is used, the light reflects off these needles and focuses into a moving star on the polished spherical surface.

Rainbow inclusions are formed at internal cleavage planes that break light into its spectral components. The combination of asterism and rainbow optics makes the piece a double collector's classification.

The Madagascan deposits near Antsirabe provide the best star rose quartz material worldwide. Only a small proportion of the raw material shows both effects simultaneously.

A Madagascan collector's item with double optical premium quality and clean spherical polish.