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About Sugihara & Co

At Sugihara & Co. GmbH, we are passionate about providing high-quality, sustainable lab-grown diamonds to jewelry companies, designers, jewelers, and brands. Based in Zurich, Switzerland we collaborate closely with our family business in Antwerp, Japan and Middle East, which is deeply rooted in the diamond industry, as growers and diamond designers. We focus on delivering excellent cut, special innovative high-end diamond shapes, and large diamond sizes, catering to clients who prioritise sustainability and quality. With our deep expertise in the diamond industry and a focus on eco-friendly practices, Sugihara & Co. GmbH is committed to driving the future of the jewelry sector through sustainable diamonds. If you’re interested in high-quality lab diamonds, we would love to connect.

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