This is an authentic TIFFANY Platinum Diamond .23ct Round Brilliant Harmony Engagement Ring size 51 or 5.75. The ring is crafted of platinum and features a center round brilliant cut diamond, approximately .23 carat with H color and VS1 clarity grade, along with pave-set diamonds on the band, approximately .27 total carat weight, totaling at .50 total carat weight for the piece. Follow this item for alerts. Tiffany is a registered trademark of Tiffany. FASHIONPHILE is not affiliated with Tiffany.