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Round|Lab Grown|IGI

0.40ct J VVS2 Round Lab Grown Diamond

VG • J/VVS2 • IGI LGF6E41278

Certificate IGI LGF6E41278

Diamond specifications and retailer prices

From €330 EUR
£290 GBP
As of November 1, 2026
Save €253 EUR (43%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: €583 EUR at 18carati · As of October 31, 2026
View at 18carati

About this 0.4ct lab-grown round diamond

This 0.4ct lab-grown round sits in the sub-half-carat band, graded J colour (near-colourless) and VVS2 clarity (very-very-slightly-included), with a very-good cut grade and certified by IGI LGF6E41278 or F6E41278. Listed at 2 retailers as of October 31, 2026, with prices from €330 to €583, a €253 spread on the same certified stone. 18carati lists it at €583. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

0.40
Carat
J
Color
VVS2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginLab Grown
Grading LabIGI
CertificateIGI LGF6E41278
Dimensions4.89 × 4.90 × 2.79 mm
L/W Ratio1.00
Top View
4.89 mm4.90 mm0.40 ctJ / VVS2
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateIGI LGF6E41278
Side View
Table 64.5%CrownGirdlePavilionCulet: NoneDepth 57.0%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Nov 1
Current: €583 EUR|Low: €315 EUR|High: €583 EUR|Avg: €451 EUR|+3.3%
18carati
Retailer 2
November 1, 2026
Retailer 2€330 EUR
18carati€583 EUR

32 data points across 2 retailers

2 retailers€330 EUR to €583 EUR

B
Cheapest Retailer
-
€330 EUR
£290 GBP
Most Expensive
C
18carati
NK-1278JVVS2-0040 · Oct 31
€583 EUR
View
1 more retailer has this diamond
Prices start from €330 EURSave up to €253 EUR

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

B
0.40ct Round
€330 EUR