.90 GIA Oval Step Cut Diamond Engagement Ring 18kThis solitaire engagement ring features a . 90 carat GIA certified oval step cut diamond in 18 karat yellow gold. The center diamond carries a K color grade, giving it a warm, faintly tinted appearance that pairs beautifully with the yellow gold setting, while the VVS2 clarity means it's nearly flawless to the naked eye. The oval step cut creates clean, linear facets that produce a hall of mirrors effect rather than traditional sparkle. Set east west