Browse our vast engagement ring collection to find the one for your valentine.
Let's be a part of your celebration.
Limitless alternatives.
Diamonds, pearls, gemstones, and metals. Learn the right way: Diamond Castle is ready and able to teach you about the intrinsic properties of the materials that make up the rings, necklaces, and earrings you love. Let our jewelry education resources give you the knowledge you need about diamonds, pearls, and gemstones so you can make the best, most informed purchasing decision.

Diamond Castle is an authorized retailer of Alwand Vahan, Bellarri, Elma Gil, Kabana, Lauren G. Adams, Pianegonda, Revv, Stel, and Triton.

Please visit our store in Marlboro, NJ, to see each collection.


Diamond Castle offers a wide range of services to better serve our customers. If there is a special service you require for your jewelry needs, just ask. We probably already provide it!

Some of our services are repair, watch services, special orders, remounts, appraisals, buying gold and diamonds.


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