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J&M Jewelry is a manufacturer, designer, and wholesaler of genuine diamond and gemstone jewelry. We cater to both direct consumers and businesses, offering high-quality jewelry at competitive prices. Our team operates by appointment only, ensuring personalized service for custom pieces or business production needs.
Items for sale on our website can be paid for directly online using the checkout process. Orders placed off the website can be processed through the direct invoice that will be sent to your email. Purchases that are made with a wire transfer or ACH deposit can be paid using the invoice and payment instructions sent directly to you.
We only sell GIA Certified Natural Earth Mined Diamonds. Larger diamonds over 1/2 carat are accompanied with a physical copy of the certification and can be verified on the GIA's website. www.gia.edu.com. Smaller diamonds below 1/2 carat are screened, graded, and sorted according to the quality.
The Kimberley Process Certification Scheme (KPCS) imposes extensive requirements (*) on its members to enable them to certify shipments of rough diamonds as ‘conflict-free' and prevent conflict diamonds from entering the legitimate trade.




