Home Wedding Day Pins This 18K white gold diamond bridal engagement ring features a 3 carat Pear shaped center diamond. Beautifully designed to accentuate the center diamond, this diamond engagement ring has a total of 0.38 carats of round diamonds flowing down the sides. The diamond engagement ring is available in any size or shape center, in 18K white gold or platinum. All Sylvie Collection diamond engagement rings are available with a flush fit matching wedding band.