PalmBeach Jewelry Marquise-Cut and Round Cubic Zirconia Platinum over .925 Sterling 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) - 2.00 carat 12x6mm Marquise shaped center stone Cubic Zirconia is the premier diamond simulant; CZ is both affordable and brilliantly flawless. Ring Style: Engagement/Anniversary - Theme: Impressive Imposters Satisfy your sense of drama with a marquise-cut cubic zirconia ring designed as a contemporary stand-out with channel-set cubic zirconia accents. A dazzling knock-out featuring 2.84 carats T.W. in luxurious platinum over sterling silver. Sizes 7-12.