PARIKHS Round Diamond stud Plus Quality (Color - IJKL, Clarity - I3-I4), hand-set in New York City with 14K White Gold, Yellow 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. If not satisfied for any reason, you may return the product to us (unused) for a full refund within 30 days.