About

A Legacy of Expertise, A Future of Brilliance

At Mountain Jewels, we bring decades of diamond industry expertise to create stunning, high-quality lab-grown diamond jewelry at unparalleled value.

Founded by Colin Coates and Roy Mazuz, our mission is simple: to provide customers with the beauty, brilliance, and luxury of diamonds—without the unnecessary markup.

Colin Coates began his career as a diamond broker in South Africa in 1982, building a worldwide network of dealers and jewelers. Roy Mazuz entered the industry in 2003, refining his expertise in sourcing and selling fine diamonds. Their partnership, built on years of successful transactions, led to the creation of Mountain Jewels.

With a combined experience spanning over 40 years in the diamond and jewelry industry, we understand the true value of lab-grown diamonds. Unlike many sellers who overprice these pieces, we price our jewelry transparently, reflecting real market value, so our customers get the best quality at the best price.

Our Collections

Our website offers a carefully curated selection of lab-grown diamond jewelry, including:
💎 Diamond Studs & Hoop Earrings
💎 Necklaces & Tennis Bracelets
💎 Eternity Rings & Engagement Rings

Each piece is crafted with precision and passion, ensuring timeless beauty for every occasion.

Returns

  • Returns are accepted within 14 days of receipt of the item.
  • 20% restocking fee will be deducted from the refund amount.

USA Shipping

We ship anywhere in the lower 48

Support

Call us at (212)-302-1417

Whatsapp (212)-302-1417