Jun 30, 2018 · This article will provide a list of the diamond companies who have the biggest impact on the worldwide trade of diamonds, whether they're manufacturers or traders.

This list showcases 25 diamond jewelry companies based in notable areas, including the USA, India, and the UK. These companies operate with varying workforce sizes, from boutique …

We have a myriad of reputable diamond manufacturing companies on our membership roster from around the globe that provide a wide range of diamonds, including synthetic diamonds.

We can offer clients a full-service experience, à la carte options and anything in between. Casting House is the top partner for custom jewelry manufacturing design, production, diamonds, …

Dec 10, 2025 · Need premium diamonds for jewelry or industrial use? Connect with certified global manufacturers offering natural and lab-grown diamonds. Competitive wholesale prices …

Mar 5, 2025 · Explore the top 10 lab-grown diamond manufacturers worldwide known for quality, innovation, and sustainable diamond production.

National Diamond Syndicate has been wholesaling diamonds and jewelry manufacturing since 1953. All of our diamonds are natural and never lab created.