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In-house Production
Our own HPHT & CVD diamond factories plus our own jewelry plant — no subcontracted quality risk.
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
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Authoritative Certification
IGI & GIA international certificates, independently verifiable via official websites.
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End-to-End Inspection
Multi-dimensional checks across every stage, from loose stone to packaged finished jewelry.
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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 Jewelry Factory: CAD modeling, casting, setting, polishing & plating
- Professional CAD modeling delivers precise custom jewelry designs for all styles.
- Advanced casting technology ensures stable metal texture and flawless jewelry shapes.
- Experienced artisans conduct meticulous stone setting to firmly secure each lab diamond.
- Multi-step polishing creates mirror-like luster and smooth edges on every jewelry piece.
- High-quality plating treatment effectively prevents oxidation and long-lasting bright finish.
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 the quality of 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.
Photo Wall
Exhibitions, Factories & Our Team
A closer look at Better Star's production facilities, showroom and people around the world
FAQ Quality
Are lab grown diamonds better quality?
Quality depends on each diamond’s 4C standards, not whether it is lab grown or natural. Well-selected lab created diamonds can outperform many natural ones.
Are all lab created diamonds the same quality?
Lab grown diamonds have identical physical hardness and optical features as natural diamonds. Quality varies by individual diamond, not by diamond type.
Lab grown diamond quality chart?
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Lab Grown Diamond Color Quality |
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Color |
Description |
Eye observation (30-40cm) |
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D-E-F |
Colorless |
Completely transparent, with no yellow or gray undertones, the top choice for engagement rings |
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G-H-I-J |
Near Colorless |
A closer look reveals a slightly warm tone, the medium blue light helps to neutralize the yellow tint |
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K & Bellow |
Faint Yellow |
A distinctly warm yellow tone |
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Lab Grown Diamond Clarity Quality |
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Clarity |
Description |
Eye observation (30-40cm) |
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IF |
Internally Flawless |
With a 10x scope, inclusions are almost invisible, the surface is absolutely clean to the naked eye. |
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VVS1, VVS2 |
Very Very Slightly Included |
Tiny inclusions: Difficult to detect with a 10x microscope, but clean to the naked eye. |
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VS1, VS2 |
Very Slightly Included |
Minor inclusions: The vast majority are clean to the naked eye. A small number of VS2 clarity diamonds have blemishes in the center of the table, visible as tiny dots under strong light at close range. |
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SI1, SI2 |
Slightly Included |
SI1 clarity is mostly clear to the naked eye, while most SI2 clarity products show impurities at close range. |
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I1-I3 |
Imperfect |
The inclusions were clearly visible to the naked eye. |
Are lab grown diamonds good quality?
Lab grown diamonds share the same hardness and light refraction properties as natural diamonds. They are widely accepted by more and more people in the jewelry market. With great consistent quality, they make a fantastic pick for high-end fine jewelry pieces.
Let's Connect
Whether you're sourcing certified lab-grown diamonds, ordering custom jewelry, or inquiring about professional training — our team responds within 24 hours to every request.
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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