This is a fine Oscar Friedman designer platinum ring set with a GIA Certified 4.36 carat natural Sapphire with rich blue color set with VS1 natural diamonds. The ring is signed Oscar Friedman PT900 for platinum and set at the center with an oval brilliant cut 4.36 carats natural corundum Sapphire with rich deep blue coloring (5/5) with GIA Sapphire Report 2231679369 which confirms this info and notes heat treatment. The ring is set with 70 round brilliant cut natural diamonds with VS1-VS2 clarity, F-G coloring. Comes with the GIA report and a GGA GemAssure Gemological Appraisals report which authenticates the above info and gives a value of $23,980. Ring is a size of 7 US and a weight of 8.7 grams of platinum and stones.