Brand Establishment

Roselle Jewelry® is a distinguished brand under BRILLIANT INTERNATIONAL (H.K.) GROUP LIMITED. Established in 2009, Roselle Jewelry was co-founded with a former GIA diamond grader to innovate and develop new gemstone materials, branded as "Rz."

Driven by the mission to provide every woman with diamond-like perfect gemstones, Roselle Jewelry has dedicated years of exclusive research. By 2015, we successfully developed the most exquisite Rz® Simulated Diamond, guaranteed to be 100% visually indistinguishable from natural diamonds.

Our professional Rz® Simulated Diamonds can perfectly replace natural diamonds and are protected by our brand’s patents. Undoubtedly, we are unique and refined.

In the same year, we launched our first physical stores in Tsim Sha Tsui and Causeway Bay, Hong Kong, allowing customers to personally experience and compare the differences between natural diamonds and Rz® Simulated Diamonds.

In 2018, we were pioneers in introducing Lab Grown Diamonds, offering customers real diamonds at only 5% of the price of natural diamonds.

Brand Philosophy

The mission of Roselle Jewelry is to ensure that every woman can own a gemstone as perfect as a diamond. However, not everyone can afford to purchase diamonds without financial burden.

Even for those who own diamonds, our professional Rz® Simulated Diamonds can perfectly substitute natural diamonds. Our products are crafted with S925 silver plated with platinum, 9K gold, 18K gold, and PT950 platinum as the base for inlay.

Introduction to Rz® Simulated Diamonds

Roselle Jewelry® produces Rz Simulated Diamonds, known as Roselle Zirconia. Our Rz® Simulated Diamonds are made from an exclusive formula of synthetic gemstone powders, compressed under high pressure, and heated to high temperatures using high-reflective, heat-resistant materials to form the crystal.

After cooling, the crystals undergo chemical vapor deposition treatment using high-energy ultrasound to enhance their hardness, making them closely resemble natural diamonds. This process not only increases the hardness but also ensures the brilliance and fire of the stones, solving the common issues of cloudiness and lack of luster in typical cubic zirconia.

The 4Cs

Roselle Jewelry®'s Rz® Simulated Diamonds are visually identical to natural diamonds, produced with the same 4Cs (Color, Cut, Symmetry, and Polish) as diamonds.

Compared to common CZ (known as Soviet stones in Hong Kong and Macau, high-carbon diamonds, SONA diamonds, or coated diamonds in mainland China), our Rz® Simulated Diamonds exhibit more outstanding brilliance and closer resemblance to real diamonds. Inferior CZ stones often use gimmicky cuts like ten hearts and ten arrows or sixteen hearts and sixteen arrows.

When compared to Moissanite, Rz® Simulated Diamonds are produced with the same 4Cs as natural diamonds and do not share Moissanite's double refraction properties, resulting in higher transparency and a more diamond-like appearance.

Rz® Simulated Diamonds OEM (Original Design Manufacturer)

Since 2015, Rz® Simulated Diamonds have been exported to Europe and America, ensuring the highest quality and guaranteeing 100% visual similarity to natural diamonds.

Currently, our gemstones are available in regions such as Switzerland, the United Kingdom, France, and Russia. You might also find our presence in various branded stores worldwide.

In Greater China, Rz® Simulated Diamonds can only be purchased through Roselle Jewelry®'s official website or physical stores in Hong Kong.

Lab Grown Diamonds and Natural Diamonds

In 2018, Roselle Jewelry introduced Lab Grown Diamonds and natural diamonds through our collaborative laboratories. We started wholesale distribution in the same year and began offering wholesale prices to individual customers in 2020.