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A Dumortierite, also known as Blue Quartz, tumblestone inside a silver coloured metal spiral cage. The spiral cage can be opened to change the crystal inside if you wish. It's natural for the cage to stretch slightly when a larger gemstone is placed inside.  The Dumortierite crystals have blue colouring.  The cage is held on a black waxed cotton cord with an adjustable lobster claw fastening.

Necklace length: 48 - 52 cm approx measured at the largest points
Cage size: 2.7 x 2.5 approx measured at the largest points
Weight: 13 - 14 grams approx