Lab-grown diamond · grown in-house
The lab-grown diamonds used by QSU are grown in-house by Qiansheng Superhard Materials. The brand is tied directly to the crystal it grows.
A lab-grown diamond we grow, and a jewel defined together with you
All QSU products use lab-grown diamonds. Lab-grown diamonds have the same chemical composition and crystal structure as natural diamonds, but a different origin; they are two distinct product categories.
QSU is the jewelry co-creation brand of Qiansheng Superhard Materials. Material capability is the foundation; design and customization turn the material into a piece that is about you.
The lab-grown diamonds used by QSU are grown in-house by Qiansheng Superhard Materials. The brand is tied directly to the crystal it grows.
You do not pick from a finished catalog. A mood, a sketch, or a meaningful outline can be the start of the design.
Cutting, precious-metal work, and setting are done by specialist partners. QSU coordinates the custom process, delivery, and after-sales service.
This is not a shelf. It is the starting point of a conversation with you. Every piece can be defined again.

The cushion center stone softens the intensity of the pink. A halo of lab-grown colorless diamonds lets light in from all sides. Designed for everyday wear: quiet, but noticed when the hand is raised.

The square is the most restrained geometry. A princess center stone sits steadily in four prongs, without additional accent stones; the yellow is already enough to be seen. Made for the everyday between commuting and formal occasions.

Three small center stones in pink, yellow, and blue sit along a fine chain, like a morning that was remembered. Each stone stands on its own, without ranking center stone against side stones. The light in wear is small and restrained.

All the stars lean down, and I give you all the brilliance.
Fill in the custom request form online, or contact us directly.
A designer confirms the style direction, center-stone specifications, budget, and lead time with you.
Design presentations are provided. How revisions are made, and how many, follow the actual service rules.
Production starts after the center stone and craft are confirmed. Precious-metal fabrication and stone setting are completed by partner workshops.
QSU is responsible for delivery of the finished piece and after-sales. Certificate options follow actual business rules.
A lab-grown diamond is a diamond grown under laboratory conditions. Its chemistry is carbon, and its crystal structure is the same as a natural diamond. It is not a simulant: cubic zirconia, moissanite, and similar materials differ in both composition and structure.
Grown in-house by Qiansheng Superhard Materials, not sourced from outside. Cutting and polishing are completed by professional partners. Center-stone specifications and grading reports are confirmed on the actual order.
You do not need to know what it should look like first.
A co-created jewel can begin with a mood, or with a sketch drawn by hand. Tell us what it should express, and we look for a design language in your story, images, and outline.
Thank you for your trust. The request has been submitted through the website inquiry form, and we will contact you. If you need to add a reference image, please send it to a sales manager on WeChat.