Round brilliant 0.50 carat total weight diamond solitaire pendant set in 14kt white gold. The diamond is graded VS2 clarity with I color, offering excellent sparkle and near-colorless appearance. The pendant features a classic four-prong basket setting that maximizes light performance and comes with an adjustable chain in 16-inch, 17-inch, and 18-inch lengths with a lobster clasp closure. All Costco diamonds are natural and untreated, accompanied by a gemological certificate of authenticity.