Our Story

The Inspirations

"When I was six, I learned that looking at a sapphire from different angles reveals two colours."

Our journey began in a small village in China, cutting sapphires by hand. Soon, my mother and aunt expanded, selling large quantities to investors in Bangkok. As demand skyrocketed, my mother hired more people and imported better equipment from Thailand. My father joined, focusing on improving cut quality. His deep research transformed the way we cut blue sapphires, moving from step cuts to diamond cuts, dramatically enhancing brilliance.

By 2006, we had established our own wholesale office in Bangkok and began participating in international jewellery shows. Our cutting techniques quickly gained attention, attracting major jewelers to work with us directly.

However, as the local mines started to deplete, we expanded, sourcing gems from Australia and Africa. We invested in a mine in Irakka, Africa, and partnered with a mine owner in Queensland, ensuring a steady supply of high-quality gemstones.

Today, we proudly provide exceptional stones to leading jewelry manufacturers and gem dealers worldwide. Our sapphires are crafted into stunning rings, pendants, earrings, and pink sapphire jewelry. A top Swiss watchmaker also uses our gems, marking a milestone for us—only a few can meet their exacting standards. This achievement proves our cutting and polishing skills rank among the best in the world.

 

The Founder

Gemma Sun was immersed in the family business from a young age, gaining invaluable knowledge that can only come from a lifetime of involvement in the gemstone industry. As an independent Jewellery designer, she shares, “I am fascinated by all types of gemstones and Jewellery. I believe every piece tells a story, whether it’s a love story or a cherished memory from the past. Now, I feel it’s time to take the next step and move forward.” 

Driven by her passion for natural gemstones, Gemma pursued formal education in gemmology and earned her certification from AIGS (Asian Institute of Gemmological Sciences). With a deep understanding of all aspects of gemstones, Gemma founded Kalosgem in 2017. Kalosgem has grown steadily, built on a commitment to providing exceptional service to its clients. Specializing in natural gemstones, the brand creates meaningful Jewellery that reflects the unique beauty of each gemstone.

“At Kalosgem, we strive to help you find the piece of Jewellery that not only enhances your natural beauty and elegance, but also stands out as a unique statement,” says Gemma. “We remain dedicated to offering exquisite Jewellery, personalized service, and professional expertise, including bespoke designs, gemstone analysis, and valuation services.”

Kalosgem offers a wide selection of natural gemstone Jewellery, and for our exclusive clients, we provide customization services tailored to meet your specific needs.