PalmBeach Jewelry 2.50-Carat Oval-Cut Blue Topaz and Diamond Accent Platinum over Silver Ring Top Rated Seller - Trusted Since 1952 - 90 Day Guarantee - Easy Returns - Free PalmBeach Jewelry Gift Box Platinum Over Sterling Silver - Quality Stamp (.925) 2.50 carat 9x7mm Oval shaped center stone Ring Style: Classic - Theme: Halo Shimmering with ethereal elegance, this oval-cut blue topaz ring, 2.50 carats, is design sophistication at its most splendid detailed with glimmering diamond accents. Created in platinum over sterling silver. Sizes 6-10. (All carat weights are approximate and may vary slightly from those listed.)