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Wholesale Calibrated White Melee Lab Diamonds

Premium bulk white melee lab diamonds in D-F color, VVS-VS clarity, strictly calibrated for seamless jewelry manufacturing. Request a B2B quote today.

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Wholesale Calibrated White Melee Lab Diamonds

Why Source White Melee Lab Grown Diamonds From Us?

Looking for colored stones too? Explore our fancy color melee lab diamonds or read about lab grown melee diamonds.

+/- 0.05mm Strict Tolerances

Eliminate production downtime. Our automated sieve calibration ensures perfectly identical millimeter sizing, reducing setting labor costs by up to 30% for volume casting.

100% CVD/HPHT Purity Guarantee

Zero contamination. Every batch goes through rigorous optical screening instruments to ensure absolute pure lab-grown authenticity – guaranteeing 0% mined diamond mix-ins.

No Blue No Milk

Our technological control guarantees no blue nuance or milky appearance in our D-F colorless ranges.

Scale-Stable Monthly Capacity

As a primary factory partner, we maintain over 5,000 carats of continuous rolling stock in calibrated sizes, securing your jewelry brand’s peak-season scalability.

White Melee Lab Diamonds Available Size Table

Round cut melee lab diamonds size chart
Average Diameter (mm)Carat Weight (ct)
0.70 – 0.800.003
0.80 – 0.900.003
0.90 – 1.000.004
1.00 – 1.100.005
1.10 – 1.150.006
1.15 – 1.200.007
1.20 – 1.250.008
1.25 – 1.300.009
1.30 – 1.350.01
1.35 – 1.400.011
1.40 – 1.450.012
1.45 – 1.500.013
1.50 – 1.550.014
1.55 – 1.600.015
1.60 – 1.700.018
1.70 – 1.800.021
1.80 – 1.900.025
1.90 – 2.000.03
2.00 – 2.100.035
2.10 – 2.200.04
2.20 – 2.300.045
2.30 – 2.400.05
2.40 – 2.500.06
2.50 – 2.600.065
2.60 – 2.700.07
2.70 – 2.800.08
2.80 – 2.900.09
2.90 – 3.000.10
3.00 – 3.100.11
3.10 – 3.200.12
3.20 – 3.300.13
3.30 – 3.400.14
3.40 – 3.500.15
3.50 – 3.600.16
3.60 – 3.700.17
3.70 – 3.800.18
3.80 – 3.900.19
3.90 – 4.000.20
4.00 – 4.100.22
4.10 – 4.300.23 – 0.29
4.30 – 4.400.30 – 0.34
4.40 – 4.900.34 – 0.49
5.00 – 5.600.50 – 0.59
Oval cut melee lab diamonds size chart
Average Diameter (mm)Carat Weight (ct)
2.00×3.000.05
2.50×3.000.08
2.50×3.500.09
2.60×3.700.10
3.00×4.000.15
3.00×4.500.17
3.00×5.000.18
3.20×4.800.20
3.35×4.700.20
3.50×5.000.25
3.80×5.300.30
4.00×5.600.35
4.00×6.000.40
4.50×6.300.50
5.05×7.050.70
5.70×8.001.00
6.00×8.001.20
Princess cut melee lab diamonds size chart
Average Diameter (mm)Carat Weight (ct)
2.00×2.000.06
2.50×2.500.10
2.80×2.800.15
3.05×3.050.18
3.15×3.150.21
3.30×3.300.25
3.55×3.550.30
3.75×3.750.35
4.05×4.050.45
4.25×4.250.50
4.50×4.500.60
4.70×4.700.70
5.00×5.000.85
5.30×5.301.00
5.50×5.501.15
6.00×6.001.50
Pear cut melee lab diamonds size chart
Average Diameter (mm)Carat Weight (ct)
1.50×2.500.03
2.00×3.000.05
2.00×3.500.06
2.50×3.500.08
2.55×4.050.10
2.50×4.500.12
3.00×4.000.14
3.00×4.500.15
3.00×5.000.17
3.20×4.800.18
3.30×5.000.20
3.50×5.000.22
3.55×5.050.25
3.50×5.500.25
3.75×5.750.30
3.80×5.500.30
3.80×6.000.32
4.00×6.000.37
4.20×6.300.40
4.50×6.500.48
4.50×6.800.50
4.50×7.000.54
5.05×7.050.65
5.05×7.550.70
5.05×8.050.75
5.70×8.501.00
7.00×9.001.70
Radiant cut melee lab diamonds size chart
Average Diameter (mm)Carat Weight (ct)
2.00×3.000.07
2.30×3.100.10
3.00×4.000.20
3.20×4.100.25
3.35×4.700.30
3.50×4.500.32
4.00×5.500.50
4.30×6.000.65
5.00×7.001.00
Marquise cut melee lab diamonds size chart
Average Diameter (mm)Carat Weight (ct)
1.50×3.000.03
1.75×3.500.04
2.00×3.500.05
2.00×4.000.06
2.50×4.500.10
2.50×5.000.11
2.80×5.500.15
3.00×6.000.20
3.30×6.500.25
3.50×7.000.30
4.00×8.000.45
4.20×8.200.50
4.65×9.300.70
5.25×10.501.00
Heart cut melee lab diamonds size chart
Average Diameter (mm)Carat Weight (ct)
3.00×3.000.10
3.00×3.300.11
3.50×3.500.18
3.80×4.200.22
4.00×4.400.27
4.20×4.600.30
4.50×5.000.38
5.00×5.500.50
5.60×6.100.70
6.00×6.000.77
6.40×6.901.00
Asscher cut melee lab diamonds size chart
Average Diameter (mm)Carat Weight (ct)
3.00×3.000.17
3.15×3.150.20
3.50×3.500.27
3.70×3.700.30
4.35×4.350.50
5.45×5.451.00
Emerald cut melee lab diamonds size chart
Average Diameter (mm)Carat Weight (ct)
2.00×3.000.08
2.30×3.100.10
2.55×3.550.15
2.50×4.000.17
2.80×4.000.20
3.00×4.000.25
3.00×4.250.26
3.00×4.500.30
3.00×5.000.32
3.20×4.500.33
3.35×4.800.35
3.50×5.000.40
3.80×5.400.50
4.00×6.000.65
4.05×6.050.70
4.45×6.300.80
4.75×6.751.00
5.00×7.001.15
6.00×8.001.85
Cushion cut melee lab diamonds size chart
Average Diameter (mm)Carat Weight (ct)
3.05×3.050.15
3.50×3.500.23
3.70×3.700.27
3.90×3.900.30
4.00×4.000.33
4.65×4.650.50
5.15×5.150.70
5.80×5.801.00
Tap Baguette cut melee lab diamonds size chart
Average Diameter (mm)Carat Weight (ct)
3.00×2.00×1.500.07
4.00×2.00×1.500.09
4.50×2.50×1.500.14
4.50×2.50×1.700.14
4.00×3.00×2.000.19
4.50×3.00×2.000.19
4.00×3.50×2.500.26
5.00×3.00×2.000.24
6.00×3.00×2.000.27
7.00×4.00×3.000.75
Baguette cut melee lab diamonds size chart
Average Diameter (mm)Carat Weight (ct)
1.50×2.500.04
1.50×3.000.05
2.00×3.500.10
2.00×4.000.11
2.00×4.500.12
2.50×4.000.17
2.50×4.500.19
2.50×5.000.21
3.00×5.000.30
FAQ

FAQ About Wholesale Calibrated White Melee Lab Diamonds

Are your white melee parcels single-cut or full-cut?

We exclusively supply Full-Cut round brilliant diamonds featuring a precise layout of 57 to 58 facets. This ensures maximum fire, sparkle, and uniformity across micro-settings, outperforming traditional single-cut alternatives.

What is the precise size sorting tolerance for micro-pave casting?

Our highly calibrated melee diamonds are sorted through microscopic laser-cut sieves, narrowing size deviation to +/- 0.02mm. This means a 1.5mm order will not arrive with erratic 1.4mm or 1.6mm stones, allowing seamless drop-in placement for automatic CNC settings.

Can these white lab diamonds withstand extreme torch heat and casting-in-place?

Yes. Our melee stones are grown from high-purity crystalline structures capable of surviving standard commercial wax-setting and vacuum investment casting-in-place processes without experiencing frostiness, clouding, or color shifts.

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