21.30ct Deep Natural Color Tanzanite Crystal Amethyst It appears that the opal

It appears that the opal only has a thin coating of the host rock that covers this piece and is almost all opal

We consider this piece to be a (MIN) miniature mineral specimen

We consider this piece to be a Large Cabinet (LGC) sized specimen

73ctMeasurements: 21

21.30ct Deep Natural Color Tanzanite Crystal Amethyst It appears that the opalThis beautiful Tanzanite Crystal has a deep violet blue color and good looking crystal structure. A very gemmy mineral specimen. Watch the video to see a high resolution 360 view of this crystal. Locality: Merelani Hills, Tanzania Measurement: 20mm x 13mm x 8. 5mm Weight: 21. 30ct Color: Natural Unheated