Subcategories:
Diamond Jewelry 
Offers high quality diamond engagement rings, bracelets, necklaces, earrings, and pendants. Quantity discount is available.
http://www.47stcloseouts.com/
Sells a large selection of certified diamonds including fine gold, platinum, and diamond jewelry such as diamond bracelets, engagement rings, earrings, diamond stud earrings, and watches.
http://www.danforthdiamond.com/
Retailer of gold marriage bands, diamond bracelets, earrings, and necklaces. Also offers loose diamonds. Based in New York, New York.
http://www.exceldiamonds.com/
4. Novori
Diamond engagement rings and wedding bands in platinum, white gold, and yellow gold settings plus diamond pendants, earrings and bracelets. Sells loose diamonds too. Located in Washington, US.
http://www.novori.com/
New Delhi, India based diamond jeweler offering 18kt gold and certified diamonds.
http://www.djewels.org/