Lab-Created Round Cut D Color Moissanite 13.0 mm 8.0 ct

Based on the information readable from the photos, I will explain the "characteristics of moissanite," "cut," and "polish." **1. Determining whether it is CZ (cubic zirconia) or moissanite** The strong "fire (rainbow-colored light)" is clearly present. Particularly when looking at the third photo (taken from an angle), you can see vibrant rainbow-colored light (fire) in green, red, orange, and blue appearing very powerfully. Since CZ and diamond do not typically produce this intense dispersion (rainbow colors), this type of brilliance matches the very strong characteristic unique to moissanite. Based on the photos, the possibility that it is moissanite is extremely high. **2. Cut quality (proportions and symmetry)** Symmetry: Very good. Looking at the second photo from the front, you can confirm that the "arrow" pattern (the arrow portion of the heart and arrows) is neatly aligned, radiating from the center. The intersections of the facets are not misaligned, indicating that it has been cut with extreme precision. How light is captured (symmetrical cut): There is no dark, see-through area (window effect) when viewed from the front, and light is reflected uniformly across the entire surface. As such, my impression is that the cut grade is very high (Excellent to Ideal class). **3. Surface polish quality** Sharpness of edges (facet ridges): Even when magnified, the "corners (edges)" where cuts intersect do not become rounded but stand very clearly and sharply. When polishing is poor, edges tend to become dull (rounded), but this stone is sharp. Surface smoothness: There are no noticeable polish lines or cloudiness on the surface, and it returns strong reflected light properly. The surface polish quality is also sufficiently high. **Overall evaluation** As far as the photos show, both the precision of the cut (symmetry) and the quality of the polish are extremely high, and it is a beautiful loose stone that clearly displays the intense rainbow brilliance characteristic of moissanite. *Note: For a definitive judgment (proof of authenticity or confirmation of micro-level polish marks), inspection with a 10x loupe or a thermal conductivity checker is required, but as far as can be seen from the photos, it appears to be a very high-quality stone!* (8 carat: Explanation 01 by Gemini) I rated it 4 because at 8 carats, it is too large and does not sparkle much. I asked whether there is a size range at which the brilliance characteristic of moissanite tends to come out more easily. (Below: Explanation 02 by Gemini) I will explain the range within the carat weight (size) variations listed on the product page at which the brilliance characteristic of moissanite (strong rainbow fire) can be enjoyed most beautifully. **Brilliance characteristics by carat weight (size)** **① 0.5 carat to 0.8 carat (approximately 5.0mm to 6.0mm in diameter)** - Brilliance type: White, sparkly brilliance (scintillation) is the main feature. - Characteristic: It looks closest to diamond, but the intense rainbow light unique to moissanite is more subdued. **② 1.0 carat to 2.0 carat (approximately 6.5mm to 8.0mm in diameter) ★ Best range** - Brilliance type: The balance between strong rainbow light (fire