Shop › Garnet, Color Change, Umba Valley Tanzania Image 1 of 9 Image 2 of 9 Image 3 of 9 Image 4 of 9 Image 5 of 9 Image 6 of 9 Image 7 of 9 Image 8 of 9 Image 9 of 9 Garnet, Color Change, Umba Valley Tanzania $349.00 1.69ct, 6.28 x 6.28mm, Octagonal Modern Fancy Cut. Looks pink/purple under different light wavelengths. Add To Cart Added! 1.69ct, 6.28 x 6.28mm, Octagonal Modern Fancy Cut. Looks pink/purple under different light wavelengths.