Alexandrite cat's eye Pt900 ring. There is no certificate of authenticity, but I will include the product tag that came with it when I bought it. Retail price: ¥140,000 The stone appears to be from India. Note: The tag states that the alexandrite is 0.67ct, but the ring itself says 0.57ct. (I was unable to determine which is correct. Please understand.) Under LED light, it appears a subdued blue-gray color, but depending on the light, it changes to a pale purple or pale green. As is common with cat's eye stones, the color is not vivid, but rather a muted tone. I couldn't capture it well, but there are diagonal streaks in the cat's eye part, towards the edge (the cat's eye is not a single large line, but rather slightly broken...). I believe it is a natural stone. There are fine scratches overall. Also, I feel like there is a slight distortion in the arm part. Please understand that this is a used item stored by a private individual. >< Weight: Approximately 2g - Gemstone: Alexandrite - Material: Pt900 - Carat: 0.67 ct (The ring says 0.57) - Cut: Cat's eye - Origin: India - Price: ¥140,000 Thank you for viewing.