● Includes an appraisal certificate from "Noble Gem Grading Laboratory" Natural Tanzanite 1.578ct Natural Diamond 0.28ct PT950 Size 11 Tanzanite Loose Stone Size 6.45 x 8.90 x 3.90mm Tanzanite Frame Width Length: 12.70mm Width: 11.00mm Total Diamond Section Width 19.80mm Maximum Band Width 2.18mm Maximum Thickness Width 6.00mm Weight 7.6g Reference Retail Price: ¥650,000 A gorgeous platinum diamond frame sets a large 1.578ct oval mixed-cut natural tanzanite! The lustrous shine that seems to well up will overwhelm anyone! Under fluorescent light, it appears as a deep royal blue like a Ceylon sapphire, and when exposed to halogen or incandescent light, a bewitching reddish-purple glow appears faintly, making it a very attractive item. Regarding inclusions, when examined with a 10x loupe, slight pinpoint inclusions can be observed internally, but they are not noticeable to the naked eye. The body as a whole has outstanding clarity, deeply clear, and you can enjoy the lustrous sparkle on your fingertips. The surrounding diamonds are also colorless and selected for their beautiful shine. ● Delivered in a jewelry box #Tanzanite #Diamond