18K/PLATINUM TIFFANY & CO SCHLUMBERGER 6 ROW X RING: Wonderful platinum & 18K yellow gold 6 row X diamond ring by Jean Schlumberger for Tiffany & Co is a must have! 48 round brilliant cut diamonds approx .77 cwt. Diamonds are VVS-VS in clarity and F-G in color. Weight 8.1 grams. Size 7. Sold with current Florida Diamond Appraisers GIA graduates appraisal for $8800.