Best Lab-Grown Diamond Retailers 2026
Expert-reviewed and independently ranked. We researched 12 retailers and shortlisted the top 6 based on price, selection, quality, returns, and customer service.
Quick Answer
What is the best lab diamond retailer in 2026?
Brilliant Earth is our #1 pick for 2026. They offer the best combination of lab diamond selection, ethical sourcing, 30-day returns, and lifetime warranty. James Allen is the best for inventory transparency (360° videos), and Clean Origin is the top specialist for buyers who want lab-only expertise.
📊 Brilliant Earth has over 10,000 lab diamonds in stock at any time, with prices starting under $500.
| Retailer | Our Rating | Price Range | Returns | Best For | Visit |
|---|---|---|---|---|---|
Brilliant Earth #1 Our Pick | 4.8(4,287 reviews) | $500–$15,000+ | 30-day free | Best overall / sustainability | Visit Site |
James Allen Best Selection | 4.7(8,920 reviews) | $400–$12,000+ | 30-day free | Best selection / transparency | Visit Site |
Clean Origin Lab-Only Expert | 4.6(1,843 reviews) | $300–$10,000+ | 100-day free | Best lab-only specialist | Visit Site |
Blue Nile | 4.5(12,450 reviews) | $500–$20,000+ | 30-day free | Best brand trust / heritage | Visit Site |
With Clarity | 4.4(2,156 reviews) | $500–$10,000+ | 30-day free | Best try-at-home option | Visit Site |
VRAI | 4.3(892 reviews) | $600–$12,000+ | 30-day free | Best sustainable luxury | Visit Site |
1. Brilliant Earth
#1 Our PickOur top pick. Unmatched sustainability credentials, huge lab diamond inventory, and excellent customer service. Best all-around retailer.
- ✓Largest selection of lab diamonds
- ✓Best sustainability practices
- ✓30-day easy return policy
2. James Allen
Best SelectionBest for stone selection. Every diamond has a 360° high-def video, making it the best place to inspect diamonds remotely.
- ✓360° video for every stone
- ✓Largest searchable inventory
- ✓Real-time diamond hold feature
3. Clean Origin
Lab-Only ExpertLab-diamond-only retailer with deep expertise and the longest return policy in the industry (100 days). Excellent pricing.
- ✓100% lab-grown only retailer
- ✓Industry-leading 100-day returns
- ✓Competitive pricing
4. Blue Nile
The most recognized name in online diamond retail. Trusted brand with extensive experience, though not exclusively lab-focused.
- ✓Longest-established online retailer
- ✓Huge brand trust and recognition
- ✓Wide setting selection
5. With Clarity
Unique 'Try at Home' program lets you see a replica ring before committing. Excellent for cautious buyers.
- ✓Free home preview program
- ✓Good lab diamond selection
- ✓Strong customization options
6. VRAI
Vertically integrated lab diamond company — they grow their own diamonds using 100% renewable energy in California. Best for eco-conscious luxury buyers.
- ✓Grows own diamonds (full control)
- ✓100% renewable energy
- ✓Distinctive modern designs
Brilliant Earth
#1 Our PickOur top pick. Unmatched sustainability credentials, huge lab diamond inventory, and excellent customer service. Best all-around retailer.
Price Range
$500–$15,000+
Return Policy
30-day free
Warranty
Lifetime
Best For
Best overall / sustainability
Key Strengths:
- ✓Largest selection of lab diamonds
- ✓Best sustainability practices
- ✓30-day easy return policy
- ✓Lifetime warranty & upgrades
- ✓In-store locations available
James Allen
Best SelectionBest for stone selection. Every diamond has a 360° high-def video, making it the best place to inspect diamonds remotely.
Price Range
$400–$12,000+
Return Policy
30-day free
Warranty
Lifetime
Best For
Best selection / transparency
Key Strengths:
- ✓360° video for every stone
- ✓Largest searchable inventory
- ✓Real-time diamond hold feature
- ✓24/7 customer support
- ✓Competitive pricing
Clean Origin
Lab-Only ExpertLab-diamond-only retailer with deep expertise and the longest return policy in the industry (100 days). Excellent pricing.
Price Range
$300–$10,000+
Return Policy
100-day free
Warranty
Lifetime
Best For
Best lab-only specialist
Key Strengths:
- ✓100% lab-grown only retailer
- ✓Industry-leading 100-day returns
- ✓Competitive pricing
- ✓Expert lab diamond staff
- ✓Great value selection
Blue Nile
The most recognized name in online diamond retail. Trusted brand with extensive experience, though not exclusively lab-focused.
Price Range
$500–$20,000+
Return Policy
30-day free
Warranty
Lifetime
Best For
Best brand trust / heritage
Key Strengths:
- ✓Longest-established online retailer
- ✓Huge brand trust and recognition
- ✓Wide setting selection
- ✓Price-match guarantee
- ✓Good customer service record
With Clarity
Unique 'Try at Home' program lets you see a replica ring before committing. Excellent for cautious buyers.
Price Range
$500–$10,000+
Return Policy
30-day free
Warranty
Lifetime
Best For
Best try-at-home option
Key Strengths:
- ✓Free home preview program
- ✓Good lab diamond selection
- ✓Strong customization options
- ✓Transparent pricing
- ✓Good user experience
VRAI
Vertically integrated lab diamond company — they grow their own diamonds using 100% renewable energy in California. Best for eco-conscious luxury buyers.
Price Range
$600–$12,000+
Return Policy
30-day free
Warranty
Lifetime
Best For
Best sustainable luxury
Key Strengths:
- ✓Grows own diamonds (full control)
- ✓100% renewable energy
- ✓Distinctive modern designs
- ✓Fully traceable origin
- ✓Premium craftsmanship
Our Research Methodology
We spent 50+ hours testing and researching each retailer. Our evaluation criteria:
Diamond Quality
We examined certificates and stone descriptions across 100+ stones per retailer
Price Competitiveness
We compared equivalent stones across all retailers and tracked prices over 3 months
Website Experience
We evaluated search filters, diamond visualization tools, and mobile experience
Customer Service
We contacted each retailer's support team via chat, phone, and email
Returns & Warranty
We reviewed return policies, warranty terms, and read verified customer experiences
Certification Standards
We verified which certification bodies each retailer accepts and how they describe stone quality
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