Quality Control of Lab Grown Diamonds & Jewelry

HPHT & CVD

Quality Commitment

In-house HPHT & CVD diamond factories + jewelry manufacturing plant, full-chain quality control, OEM standards for world-renowned jewelry brands. In-house Production, Authoritative Certifications, End-to-End Inspection, Stable Bulk Supply

In-house Production

Our own HPHT & CVD diamond factories plus our own jewelry plant — no subcontracted quality risk.

Authoritative Certification

IGI & GIA international certificates, independently verifiable via official websites.

End-to-End Inspection

Multi-dimensional checks across every stage, from loose stone to packaged finished jewelry.

Stable Bulk Supply

Deep inventory and a mature plant enable large-volume OEM/ODM orders delivered on schedule.

Source Quality Control for HPHT & CVD Loose Diamonds

Operate mature HPHT and CVD factories simultaneously to control diamond quality from the source.
Adopt strict 4C grading standards for transparent, authentic diamond quality.
IGI & GIA international certificates with clear growth method labeling, verifiable via official websites.

Precision Standards of Our In-house Jewelry Factory: CAD modeling, casting, stone setting, polishing & plating

Operate mature HPHT and CVD factories simultaneously to control diamond quality from the source.
Adopt strict 4C grading standards for transparent, authentic diamond quality.
IGI & GIA international certificates with clear growth method labeling, verifiable via official websites.

Multi-level Standardized Inspection Process

We conduct comprehensive multi-dimensional checks covering loose diamonds, metal materials, brilliance, dimensions, appearance, setting firmness, certificates and packaging to ensure finished jewelry fully meets clients' requirements.We conduct comprehensive multi-dimensional checks covering loose diamonds, metal materials, brilliance, dimensions, appearance, setting firmness, certificates and packaging to ensure finished jewelry fully meets clients' requirements.

Bulk Supply

Stable Bulk OEM Support

We maintain large inventories of tens of thousands of loose diamonds and finished jewelry. Supported by our mature jewelry plant and steady raw material supply, we accept large-volume OEM & ODM customization with on-time, quality-guaranteed delivery.

300,000+

Carats Loose Diamonds Inventory

600,000+

Carats Monthly Production Capacity

2,000+

Craftsmen for Cutting & Polishing

1:1

Full-Compliance OEM & ODM Capacity

After-Sales Policy

After-sales Warranty Policy

Better Star provides comprehensive after-sales service and warranty terms. We take full responsibility for quality defects, offering free repair, maintenance, rework or compensation solutions promptly.

Free Repair

Complimentary fixes for stone fallout, deformation and damage caused by quality defects.

Free Maintenance

One lifetime free jewelry cleaning & care service.

Free Resizing

Three complimentary size adjustments available.

Return Service

Full refunds for dissatisfaction arising from quality issues or our operational errors.

Lab Diamond Jewelry

Ring

Earrings

Bracelet

Necklace

Quality