PARIKHS Round Diamond stud in Popular Quality in Screw Back (Color - JKLM, Clarity - I2), Hand-set in New York City with 14K White Gold, Yellow Gold & Rose Gold 4 Prong setting. The Screw Back uses a post that is threaded enabling the backing to work like a screw which can be rotated until it is fully screwed onto the ridges for a tight fit. They are an excellent solution as an earring backing for an active woman who likes to wear valuable earrings. They provide maximum safety and peace of mind. PARIKHS offers a wide variety of selection in genuine diamonds for studs, Pendants and Sets to suit everyone's needs. Please check our other listings with different diamond quality: Plus - I3-I4, Promo - I3, Popular - I2, Prime - I1, Premium - SI2, Prestige - SI1, Privilege - VS2 Please note that 0.04ctw to 0.07ctw are very small baby size diamond stud and is suitable for the second or third ear hole. IGI Certified from 0.70 ctw & above by GIA Certified Graduate Gemologists. PARIKHS offers a specialized customer service team that is available to answer any product questions before, during or after the purchase. If not satisfied for any reason, you may return for a full refund within 30 days.