Antoinette Matlins gives her professional testimonial after working with GemPen®

Many thanks to gemmological industry expert Antoinette Matlins, for her professional testimonial after working with GemPen® Premium & Darkroom.

GemPen® is a powerful portable gemmological instrument for today’s jewellers & gemmologists. Providing the ability to screen diamonds, rubies & sapphires for synthetics & treatments.

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