3mm Heart Lab Grown Diamond
Special Offer
Buy 5 Get 5% Off
Buy 10 Get 10% Off
Buy 20 Get 15% Off
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Estimated Delivery:08 Aug - 12 Aug
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Free Shipping: On all UK orders and international orders over £50
3mm Heart Lab Grown Melee Diamonds – Premium Small Loose Diamonds
Create stunning jewellery with our precision-cut 3mm heart lab grown melee diamonds. Expertly cut to excellent grade, these premium melee diamonds deliver the consistent sparkle and sizing professional jewellers demand for flawless execution.
Why Choose Our Lab Grown Melee
Precise Calibration: Tight +0.04mm tolerance ensures consistent sizing for seamless pavé work, channel settings, and halo designs. No sorting, no waste, no frustration—just perfect stones ready to set.
Maximum Brilliance with Excellent Cut: Every melee diamond is cut to excellent grade, delivering the fire and sparkle that makes pavé work come alive. Your finished pieces will outshine the competition.
Flexible Clarity Options for Every Budget: Choose VVS for ultra-premium pieces, VS for the perfect balance of quality and value, or SI for budget-conscious projects without sacrificing visible sparkle.
Ethically Sourced, Conflict-Free: 100% sustainably grown. Meet growing consumer demand for sustainable luxury while enjoying consistent supply and competitive trade pricing.
Diamond Specifications
- Size: 3mm Heart Cut
- Average Carat Weight: 0.10ct per diamond
- Colour Grade: D/E
- Clarity Options: VVS, VS, or SI
- Cut Grade: Excellent
- Calibration Tolerance: +0.04mm
- Type: Lab Grown
Why Buy From Us?
Trade pricing, next-day UK delivery, and expert support for professional jewellers. In-stock and ready to ship. Perfect for pavé settings, halo designs, eternity bands, earring accents, and restoration work. Whether you're creating custom engagement rings or restocking your bench inventory, our melee diamonds offer the precision, quality, and consistency professional jewellers depend on.
United Kingdom
Royal Mail Tracked 24 - free for all UK orders up to £200
Royal Mail Special Delivery - free for orders over £200
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International
Royal Mail International Tracked & Signed — free on orders over £50, otherwise £6.99
FedEx Connect Plus — free for orders over £300
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Customs & Duties
International orders outside the UK may be subject to customs duties and import taxes upon delivery, which are the buyer's responsibility.
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Dispatch Times
Round melee dispatched within 2 business days.
Fancy melee and certified diamonds within 5 business days.
UK delivery in 1 business day from dispatch.
International delivery in 3–5 business days from dispatch.
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Returns
We’re committed to your complete satisfaction. Enjoy hassle-free returns or exchanges on all items within 30 days of delivery.
Top Grade Rough
Our lab grown melee diamonds are created using the High Pressure High Temperature (HPHT) growth process, which replicates the natural conditions deep within the Earth's mantle. This produces exceptional colourless, high-clarity diamonds that require no post-growth treatments. Every diamond offers the same physical, chemical and optical properties as a natural diamond
The Perfect Cut
Everylab grown melee diamond is expertly cut to maximise brilliance, fire and scintillation. Precision calibration ensures each stone matches the required dimensions, with a manufacturing tolerance of just ±0.04 mm, making them ideal for pavé setting, micro-setting, engagement rings, wedding bands, jewellery repairs and fine jewellery manufacturing