White sagenite needles in quartz

Weight: 18.31 ct
Size: 21.5 x 15.5 x 6.9 mm

€42,00

White sagenite needles in quartz from Brazil, probably altered amfibol inclusions, now empty channels, partly filled with secondary minerals and iron oxyhydroxides, due to the dissolution of the included mineral. They can be easily be confused with rutile needles, but careful microscopic observation reveals the difference.
Curious sample for gemologists and inclusions collectors!

Color: colorless quartz with white sagenite needles
Cut: oval cabochon
Origin: Brazil

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