IGI report number: LG728538999 This is a stunning high-quality piece of jewelry featuring a substantial laboratory-grown diamond. Based on the IGI (International Gemological Institute) certificate and the photos provided, here is a detailed description: ​The Center Stone: Lab-Grown Diamond ​The heart of this necklace is a very large, high-grade diamond with the following specifications: ​Shape: Pear Brilliant (often called a "teardrop"). ​Weight: 3.56 Carats, which is a significant and eye-catching size. ​Color Grade: E (Colorless). This is the second-highest possible grade, meaning the stone appears perfectly white to the naked eye. ​Clarity Grade: VS 1 (Very Slightly Included). Any internal characteristics are very difficult to see even under 10x magnification. ​Cut Quality: Both Polish and Symmetry are graded as Excellent, ensuring maximum sparkle and light return. ​Origin: Created via Chemical Vapor Deposition (CVD) and classified as Type IIa, the purest form of diamond. ​The Setting and Design ​Style: A classic Solitaire Pendant. This "floating" style keeps the focus entirely on the diamond. ​Mounting: The diamond is held by a three-prong setting, with a specialized "V-prong" at the pointed tip to protect the most fragile part of the stone. ​Metal: 14K White Gold. ​Chain: A delicate Cable Link chain that threads directly through the pendant mounting (sliding style), allowing the diamond to sit flat against the skin. Measurements': 13.79 / 8.61 / 5.24mm.