HSG Luxury 925 Sterling Silver Princess Cubic Zirconia CZ Bridal Engagement Wedding 2 Piece Ring Set Crafted of 925 Sterling Silver,Prong Setting Cubic Zirconia The big stone is made of SONA zircon,small stone is made of 5A zircon.The sona stone is added more a layer of coating on the surface of the 5A zircon.The sona zircon is more like the real diamond. Exquisite artisan craftsmanship. Free gift box available This item is fulfilled by Amazon FBA, usually the shipment takes about 1-3 days. We checked all the items carefully before the delivery, but it might be broken during the shipment, if you received the defective item or meet any other problem, please feel free to contact us, we will give you the reply within 24 hours. 30 days Money-back guarantee.