Editors' favorite, most recently spotted on The Skimm's Guide to Sustainable Jewelry.For everyone and every jewelry collection: lab grown diamond studs set in timeless, solid gold 4-prong or 3-prong martini stud earrings. Ethically-sourced lab grown diamonds are graded in the F-G color and VS+ clarity ranges. Lab diamonds are certified by an independent lab. More about these bestselling lab diamond stud earrings: 1.0ctw lab diamond studs are set with two uncertified .50ct diamonds measuring 5mm each. 1.5ctw lab diamond studs are set with two uncertified .75ct diamonds measuring 5.75mm each. 2.0ctw lab diamond studs are set with two 1.0ct diamonds measuring 6.3mm each. 2.5ctw lab diamond studs are set with two approx. 1.25ct diamonds measuring 7mm each. 3.0ctw lab diamond studs are set with two approx. 1.50ct diamonds measuring 7.4mm each. 4.0ctw lab diamond studs are set with two approx. 2.0ct diamonds measuring 8mm each. Secured with classic tension pushbacks. Favor another type? Contact us for options. 14k yellow, rose, and white gold available. This jewelry is crafted-to-order and will ship in approximately 5 business days. Choose Free Standard Shipping or Overnight Shipping at checkout. We offer free 30-day returns. Read our full policy.