51.86ct Amazing Natural Color Tanzanite Crystal museum this is not a piece

this is not a piece that would be ideal for cutting (rough)

4mm x 16mm x 18

Measurement: 110mm x 54mm x 50mm

23ct    Color: Heated

they are fairly gemmy in certain areas and will show a color change of green (fluorescent light) to red (incandescent light) when the crystal is back lit

51.86ct Amazing Natural Color Tanzanite Crystal museum this is not a pieceThis Tanzanite Crystal Specimen comes from Tanzania. It has completely natural crystal faces and termination. It has an amazing color for a natural and unheated tanzanite crystal. This piece would be a stunning addition to any mineral or Tanzanite collection. Get a better look at this piece by viewing it in the 360 degree video! Locality: Merelani Hills, Tanzania Measurement: 43mm x 10. 5mm x 10mm Weight: 51. 86ct Color: Unheated