Natural Bi-Color Tanzanite – 1.72 ct – Cushion Cut – ICA GemLab Certified A beautiful 1.72 carat natural Tanzanite (Zoisite) displaying an attractive greenish-violet bi-color appearance, fashioned in a classic cushion shape with brilliant / modified brilliant cutting. The gemstone is transparent and shows appealing green and violet tonal variation, giving it a distinctive bi-color character and strong visual interest. Gemstone: Natural Zoisite Variety: Tanzanite Weight: 1.72 ct Shape: Cushion Cut: Brilliant / Modified Brilliant Dimensions: 7.51 × 7.50 × 4.03 mm Color: Greenish Violet Transparency: Transparent Laboratory: ICA GemLab Report No.: TH26G130509 Report Date: 14 September 2026 The laboratory notes that Tanzanite is commonly heated to improve or alter its color and that the color authenticity of this gemstone is currently undeterminable. A distinctive certified natural bi-color Tanzanite, ideal for collectors or bespoke fine jewellery.