Wholesale CVD Lab Grown Diamonds - IGI Certified
Factory-direct CVD lab grown diamonds from our Surat manufacturing facility, with live inventory, transparent wholesale pricing, and trade terms for retailers, manufacturers, and jewelry businesses worldwide.
- Full Shape Range
- Live Wholesale Pricing
- IGI Certified
- Bulk & Custom Sourcing
Factory-Direct CVD Lab Grown Diamonds for B2B Buyers
CVD (Chemical Vapor Deposition) diamonds are grown by building up carbon layer by layer inside a controlled chamber, producing a stone that is chemically, physically, and optically identical to a mined diamond – same hardness, same brilliance, same 4Cs grading. Buyers choose CVD specifically for its consistency: because the growth process is controllable, we’re able to produce reliable quality across a wide carat and shape range, batch after batch, which matters when you’re building a retail collection or fulfilling a manufacturing order that needs to match.
OCS Diamond has manufactured CVD stock from our own Surat facility since 2018, serving 50+ retailers, wholesalers, and jewelry designers across India, the USA, the UK, Europe, the Middle East, and Australia. As GJEPC and Surat Diamond Bourse members, we run every stone through internal quality control before it’s ever listed — checked against our own grading standard, not just the certificate — because buying direct from the manufacturer should mean more oversight, not less.
Our current CVD inventory spans 1mm to 10 carats and above, across the full white color and clarity range up to VS2 (occasionally SI1), refreshed every 2 days. Whether you’re a retailer sourcing consistent melee-to-solitaire stock or a manufacturer filling a specific bulk order, every stone ships with its IGI certificate and video — and for larger or first-time orders, we’ll walk you through the actual stone on a live video call before you pay.
Live White CVD Lab Grown Diamonds Inventory
Our live inventory includes a wide range of White CVD lab grown diamonds across popular shapes, carat weights, color grades, and clarity levels, giving B2B buyers flexible options for retail, manufacturing, and custom jewelry requirements.
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Available Specifications
| Specification | Details |
|---|---|
| Growth Type | CVD (Chemical Vapor Deposition) |
| Carat Range | 1mm to 10 carats+ |
| Color | White (D–J / DEF–GHI) |
| Clarity | up to VS2, with occasional SI1 availability |
| Cut/Polish/Symmetry | Excellent to Very Good across all three grades |
| Shapes Available | Round, Oval, Cushion, Emerald, Pear, Princess, Marquise, Radiant, Asscher, Heart, Baguette, Portuguese, and more |
| Certification | IGI |
“Every stone carries an IGI certificate. For buyers prioritizing resale confidence, we recommend VS2 clarity or higher — and every stone, regardless of grade, is internally reviewed by our in-house gemology team before it’s listed, not just certified and forgotten.”
Why Buy CVD Diamonds Direct From OCS Diamond
Certificate and video linked on every stone; for bulk or first-time orders, we’ll walk you through the actual stone live on a video call before you pay
Every batch checked against our internal grading standards, beyond the bare IGI certificate, before listing
IGI certificate, video, and detailed measurements on every stone, refreshed every 2 days
What Determines CVD Diamond Pricing
Four factors drive price on any CVD stone, and understanding the weighting helps you buy smarter rather than just comparing carat-for-carat. Carat weight matters, but clarity and color move price faster than most buyers expect — a jump from SI1 to VS2 often affects price more than a 0.1 carat difference. Cut quality (Excellent vs Very Good polish/symmetry) affects both price and how the stone actually performs under light, which matters more for solitaire pieces than for pavé settings. Shape also plays a role — round brilliant commands a premium over fancy shapes like emerald or radiant cut, purely on cutting yield and demand.
If you’re buying for a specific price point rather than a specific spec, tell our team your target and we’ll show you where the best value sits in current stock — sometimes a step down in color or up in clarity gets you more visual impact per dollar than the “obvious” choice.
Where CVD Diamonds Are Most Commonly Used
Round and oval CVD in G-H color, VS2 clarity are the most-ordered combination for solitaire engagement rings – a strong balance of brilliance and value.
Smaller CVD melee (under 0.10ct) feeds pavé and halo settings, where consistency across a batch matters more than any single stone’s individual grade.
Larger CVD stones (1ct+) in higher color grades are typically sourced for statement pieces and bridal collections where the center stone carries the design.
CVD vs HPHT — Which Should You Stock?
Both CVD and HPHT produce a real diamond — same crystal structure, same hardness, same certification process — but the growth method affects a few practical things worth knowing before you order. CVD tends to offer more consistent control over color and clarity at scale, which is why it’s often the better fit for retailers who need matching or near-matching stones across a collection, or for larger carat weights where consistency matters most. HPHT is typically the faster growth method and is also used industry-wide as a post-growth treatment to improve color and clarity in CVD stones, giving it a distinct role beyond primary growth.
For most retail and bridal jewelry buyers, either method delivers a certified, high-quality stone — the decision usually comes down to your specific carat and clarity target rather than one method being categorically “better.” If you’re unsure which fits your order, tell our team your target specifications and we’ll recommend the better-suited option from current stock rather than you having to guess.
Frequently Asked Questions
Chemically and physically, none — a CVD diamond has the same crystal structure and hardness as a mined one. The difference is origin, which is clearly stated on the IGI certificate. Lab-grown diamonds generally resell at a lower value than natural diamonds of equivalent grade, which is reflected in the significantly lower purchase price to begin with – resale expectations should be set accordingly regardless of origin.
Yes. Our certified CVD lab grown diamonds are supplied with IGI grading reports where applicable. The report documents the stone’s laboratory-grown origin along with its graded specifications, providing documentation that retailers, manufacturers, and appraisers can reference.
Our standard minimum order is 5 carats. First-time buyers can request a smaller sample order to evaluate quality before committing to bulk.
Yes — if a specific combination isn’t currently in stock, our custom manufacturing process can produce it, typically within 10 business days.
Every 2 days – the table you’re viewing reflects current available stock, not a static or outdated catalog.