18.2 carat "Shark Fin" Unheated Tanzanite Crystal Porphyry I loved how the crystals

I loved how the crystals on the front side were larger and spread across the host rock

3ct    Color: Natural Unheated

Measurement: 130mm x 104mm x 89mm

yellow and greens and the other is more of a multicolor that includes some blues

some crystals will have a stronger fluorescence than others

18.2 carat "Shark Fin" Unheated Tanzanite Crystal Porphyry I loved how the crystalsThis beautiful Tanzanite Crystal has a deep natural unheated color and good looking crystal structure. Its a gemmy mineral specimen and to me looks like a sharks fin. A very interesting and cool crystal shape. Watch the video to see a high resolution 360 view of this crystal. Locality: Merelani Hills, Tanzania Measurement: 19. 2mm x 15. 6mm x 6. 9mm Weight: 18. 2ct Color: Natural Unheated