Loose Grown Diamond: 41 Years of Manufacturing Behind Every Stone

Loose Grown Diamond is a diamond manufacturing company built on more than four decades of family expertise. Founded in 1984, the company is led by a third-generation diamond manufacturer whose workshops carry a combined experience of over 41 years in the industry. That background shows up in how the company operates: diamonds are crafted directly at its own manufacturing unit in India, which means there are no middlemen and no extra markups standing between the workshop and the customer.

Every diamond sold is 100% lab-grown, conflict-free, and certified by IGI, GIA, or GCAL, with each stone inspected and graded to confirm authenticity and quality. The catalog spans HPHT and CVD diamonds, melee and calibrated stones, and fancy shapes including marquise, oval, pear, radiant, emerald, and more, all customizable by size, shape, color, clarity, cut, and carat.

What sets the custom process apart is how collaborative it is from the first message onward. Customers can upload a picture, sketch, or link of a design they have in mind, and the team delivers four views of free 3D CAD renderings within 48 hours. Nothing is priced until the design is fully approved, and revisions are turned around within 24 hours until the customer is satisfied. Once approved, custom rings and jewelry are typically completed within 2 weeks.

Loose Grown Diamond also backs its pricing with a Price Match Guarantee on certified loose lab-grown diamonds, along with free engraving, 7-day free resizing, and a 30-day return policy. Consultations are available in person at its office in the New York City Diamond District or virtually with an expert gemologist, and customer support is reachable 24 hours a day, 7 days a week by phone, email, or live chat.

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Existing: Each of the 6 brands listed here offers something that goes beyond picking a stone and setting from a dropdown menu.

Updated: Each of the 7 brands listed here offers something that goes beyond picking a stone and setting from a dropdown menu. Loose Grown Diamond opens the list with four decades of direct manufacturing experience, certified lab-grown diamonds, and a design process that stays collaborative from first sketch to finished ring