OnDiamonds.com has been a source of certified loose diamonds for more than 10 years. Located in the heart of Houston diamonds business and financial district, OnDiamonds.com carries our own diamond inventory instead of working off a wholesaler's diamonds and taking a commission like many other diamond Websites. What that means to you is we always know what is available and we can ship from our inventory with no delays.

People from the area of Houston can visit us in the Houston Diamonds Show Room where they can buy diamond engagement rings or loose diamonds directly at the source.

At OnDiamonds.com you are always getting the highest quality diamond and the best service, at the lowest possible price. Whether you are looking for an engagement ring, an anniversary ring, or other special item, we can help you find just what you want. Buying a diamond is a major purchase for most people and we take that very seriously, offering you the best experience you will find.

Our well-trained customer service team can help you over the Internet or on the phone, responding instantly either way to your needs. We don’t have a huge storefront to pay for so our low overhead means lower prices for you. You’ll be surprised to know that traditional jeweler stores usually have overhead that is higher than the actual wholesale cost of their diamonds, meaning you are paying much more than you need in order to support their shops and staff. OnDiamonds.com keeps its overhead expenses extremely low so we can pass on the savings to you. That doesn’t mean we compromise on quality, though: the most respected independent diamond grading labs in the industry certify all our diamonds.

If you have a question about diamonds before, during, or after a sale, our friendly, knowledgeable staff is always available to help you. We'll answer your questions honestly and quickly, helping you make the best decision possible. You can call OnDiamonds.com at any time using our toll-free number 888-5-ONDIAMOND (888-566-3426) and one of our diamond or jewelry specialists will be delighted to assist you.

OnDiamonds.com offers you a full 30-day return guarantee, and we ship every order quickly by FedEx so you have your purchase as fast as possible.