Yes. We can customize any piece of jewelry from our website to personalize it for you. To make a piece specific to your desires, customization of a piece of jewelry may lead to longer production times than stated on a product page.

We can produce a setting to fit a diamond or gemstone that you already have as well as mount that diamond or gemstone to your specific needs.

Website orders are processed with a debit card, credit card or bank transfer. Once your item is made, it will be shipped to the address provided by the customer at the time of purchase.

You can place an order by calling our Customer Service Team at 877.766.2757.

We can assist you by sending you a complimentary ring sizer to help you find your ring size. You may also visit our ring sizer page to download a PDF file to help you properly size your finger.

We accept VISA, Mastercard, Discover and American Express. We also accept debit cards, bank wire transfer, and Bitcoin.

If you love a specific Mark’s Diamonds piece, you may lay that item away or qualify to purchase through Wells Fargo financing.

Orders shipped to Colorado addresses will be subject to the standard Colorado State sales tax at 7.65%.


When you purchase a diamond through Mark’s Diamonds, your diamond will come with a corresponding lab report completed by a certified gemologist detailing your diamond’s unique characteristics. These unique characteristics will also be listed on your Mark’s Diamonds appraisal.

Yes. Mark’s Diamonds offers 100% natural and conflict free diamonds & eco friendly lab grown diamonds.

Yes, we can help you to find the perfect loose diamond or gemstone to fit your needs.

We offer a variety of alternative metals. If there is a specific metal type that you would like to see a piece of jewelry in, please call us at 877.566.5524.

Yes! You can make an appointment to visit our showroom in Denver, Colorado and see any of our beautiful pieces of jewelry.

No, we do not offer refund, exchanges, nor warranty on lab grown diamonds.


Once your order is placed, verified, and complete, we will ship your item to you priority overnight shipping via FedEx. For orders placed on Friday or over the weekend, items will be shipped on the following Monday.

After your order is taken, our Quality Assurance team takes the time to make certain each piece is made to its exact specifications. Once your order is complete, our QA team will package your piece along with an appraisal document and polishing cloth.

At Mark’s Diamonds, we only ship within the United States.

We have a hassle free 30-day return policy. Click here to visit our return page for instructions on how to return your Mark’s Diamonds piece.

Long-Term Care

With your ring purchase, we offer one free re-sizing within 60 days of your original purchase.

We can easily assist you in upgrading your Mark’s Diamonds piece by contacting our Customer Service Department at 877.766.2757.

When you purchase a piece of jewelry from Mark’s Diamonds, you are eligible for a cleaning, re-polishing, prong checking, rhodium plating, re-sizing and small diamond replacement as part of our warranty guarantee. For more details, contact our Customer Service Department at 877.566.5524.

All of your Mark’s Diamonds jewelry pieces will be accompanied by an appraisal. We recommend Jeweler’s Mutual or State Farm insurance to insure jewelry pieces. You may also add your jewelry to your home-owner’s or renter’s insurance policies.