NNJ Designs Four Petal Vintage Style Ring Design in Solid 14K White Gold w a Vivid Blue Diamond and White Diamond Accents Round Engagement Ring 6.75. This sparkling Art Deco ring design features a brilliant cut blue diamond in 14k white gold with diamond halo. A statement ring design perfect for an eye catching engagement or anniversary. This ring also makes a beautiful birthstone ring for your loved ones.The occasions to show off this ring are endless - mother's day, graduation, wedding, birthday, date night, Christmas, etc. Item Type: Ring Stone: Blue Diamond Treatment: Irradiated Hardness: 10 Weight: 0.72cts Cut: Faceted Shape: Round Head size: 5.7mm Metal: 14k/3.38g Diamonds S/I GH: 16/0.43cts Sku: AJR235/4310 SKU: AJR235 - R.