HPHT CVD Rough Lab Grown Diamonds Manufacturer
Uniformly sorted cultivated melee with strict 4C inspection from two mainstream growth methods. Ideal accent stones for wedding bands, earrings, pendants and bespoke fine jewelry production.
Better Star operates two professional production factories for lab grown rough diamonds, covering both mature HPHT and advanced CVD synthesis technologies to satisfy diversified raw material demands. Our rough stones are categorized clearly based on crystal growth methods, then graded systematically by crystal shape, color, clarity and internal inclusion conditions before delivery.
Supported by complete industrial production lines, we maintain strong mass delivery capacity, stable uniform batch quality and competitive cost advantages.
These high-quality lab diamond roughs are widely supplied to global diamond cutting and polishing manufacturers, serving as core raw materials for producing finished melee, single-stone gems used in bridal rings, earrings, necklaces and luxury fine jewelry.
- CVD & HPHT Lab Diamonds
- IGI & GIA Certification
- Strict 4C Standards
- Full Grade Selections
| Type | CVD & HPHT | Carat | 0.03 - 24 ct |
| Color | D, E, F, G, H, I | Clarity | VVS, VS, SL |
| Cut | ID, 3EX | Certification | IGI / GIA / NGTC |
| Shape | Round & Fancy Shape | Fancy Color | Pink, Blue, Orange, Yellow, etc. |
| Polish | EX, VG, GD | Symmetry | EX, VG, GD |
| Fluorescence | N, F, M, S, VS | Color Treated | Treated / Untreated |
Rough Lab Grown Diamond Key Features
Exceptional Diamond Brilliance
Carefully selected lab diamonds feature excellent cut for max light return & sparkle
Premium Color & Clarity
Available in D–F color and VVS clarity grades to meet fine jewelry standards.
Customizable Shapes
Beyond mainstream diamond cuts, we offer custom diamond shapes.
Bulk Lab Diamond Customization
Bulk customization of loose lab diamonds in varied colors, cuts, carat & certifications.
About Better Star
Lab Grown Diamond & Jewelry Manufacturer
Better Star is a vertically integrated diamond and jewelry manufacturer headquartered in Zhengzhou. We grow lab‑grown diamonds at our in‑house CVD and HPHT facilities, perform cutting and certification internally, and complete jewelry casting and stone setting within our own workshop. We ship orders directly to you in custom branded packaging.
Thanks to our complete industry chain, Better Star have a significant advantage in the markets for rough lab diamonds, loose diamonds, and finished jewelry. Currently, we serve jewelers and jewelry brands in over 30 countries worldwide, providing OEM and ODM services for lab diamond jewelry, as well as supporting custom lab grown diamond jewelry.
- CVD & HPHT Lab Diamond
- Cut & Polish · IGI & GIA
- Master Jewellery Artisans
- QC & Comprehensive Inspection
- Bespoke Packaging & Fast Dispatch
- Ultimate Cost Performance
Related Diamond Jewelry Collections
Discover lab-grown diamond bracelets, necklaces, rings, earrings, and pendants crafted with certified quality and exceptional brilliance for global jewelry brands and retailers.
Let's Connect
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Email Gwyneth@betterstar.net
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Whatsapp 8615138918636
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Phone +86 15138918636
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Address Zhengshang International Plaza B-1605, ZhengZhou City, Henan Province, China