Milestone Gem is a third generation, family owned, high end private jeweler and purveyor of fine diamonds. We specialize as gemstone advisors and custom jewelry creators dedicated to offering our clients designer quality products without the premium retail price markups. We import the finest diamonds and rare gems from around the world, supplying wholesalers, dealers, and retail stores around the country with GIA certified stones. Our foundation is based in the wholesale diamond trade, allowing us to offer wholesale pricing directly to our clients on any pieces they are looking to purchase, no matter how large or small.

Our value proposition is very simple and it is based on a few founding principles. The four principles that are part of everything we do are: Integrity, Trust, Value, and Service. Allow us to be your market experts who offer objective guidance when looking to buy diamond jewelry. Buying a loose diamond with Milestone Gem and allowing our team to create a custom piece of jewelry for you could very well be the most financially responsible thing you could ever do.

All Milestone Gem clients are given full access to our custom jewelry design studio in the heart of New York City’s Diamond District. Here, customers can sit with a team of the country’s most talented jewelry designers to view countless options and collaborate on every aspect of their unique piece. This allows them to tweak every detail on a virtual 3D model to achieve their desired result. Once the computerized model is created, our customers can view a plastic 3D print out of what their actual piece will look like. If you can dream it, we can design and produce it. We never recommend trying to fit a stone into a pre-made setting, which is what your average retail store will do in order to increase their profits.

By choosing Milestone Gem, you are given an unrivaled experience combining honest and objective guidance, competitive pricing, high quality products and the ability to custom-create the ring, pendant, necklace, or earrings of your dreams without paying retail pricing.

We look forward to earning your business!

To see more about our Custom Design Process, pleaseĀ click here.


Milestone Gem in no way supports or condones the use of conflict diamonds. Milestone Gem has made every reasonable and responsible effort to ensure that every diamond chosen for our clients originates from legitimate sources and is not involved in the support of conflict diamonds.


Milestone Gem acts as your private jeweler and diamond expert by advising on quality and value while providing a customer service experience that is second to none. Our team will walk you through every step of the process to make sure all of your questions are answered honestly and objectively.

Specialty consulting services are available for specific requests such as:

  • Buying Loose Diamonds
  • Buying Custom Jewelry
  • Quality Disputes
  • Mediators and Arbitrators
  • Damage Assessment of Previously Owned Jewelry


Upon request, our team is pleased to provide formal valuation and appraisal services. Specific appraisals may be needed for any of the following:

  • Private Individuals
  • Insurance Companies
  • Litigation Support & Expert Witness Services
  • Government & Law Enforcement Agencies
  • Jewelry Industry Professionals
  • Estate & Succession Negotiations
  • Marriage Dissolutions
  • Damage Reports
  • Resale
  • Donation & Gift
  • Customs Evaluations


Have a piece of jewelry that needs to be fixed, adjusted, reset, or cleaned? Let us help! No job is too small or too big. We can help with anything from resizing a ring or completely redesigning a new setting for an old piece of jewelry.