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Round|Lab Grown|IGI

0.40ct K VVS2 Round Lab Grown Diamond

EX • K/VVS2 • IGI LGF6C25088

Certificate IGI LGF6C25088

Diamond specifications and retailer prices

From £250 GBP
As of November 5, 2026
Save £202 GBP (45%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: £452 GBP at 18carati · As of November 4, 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 K colour (faint-tinted) and VVS2 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LGF6C25088 or F6C25088. Listed at 3 retailers as of November 4, 2026, with prices from £250 to £452, a £202 spread on the same certified stone. 18carati lists it at £452. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

0.40
Carat
K
Colour
VVS2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginLab Grown
Grading LabIGI
CertificateIGI LGF6C25088
Dimensions4.66 × 4.71 × 2.97 mm
L/W Ratio1.01
Top View
4.66 mm4.71 mm0.40 ctK / VVS2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateIGI LGF6C25088
Side View
Table 56.0%CrownGirdlePavilionCulet: NoneDepth 63.4%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: £452 GBP|Low: £241 GBP|High: £452 GBP|Avg: £349 GBP|+3.6%
18carati
Retailer 2
November 5, 2026
Retailer 2£250 GBP
18carati£452 GBP

35 data points across 2 retailers

3 retailers£250 GBP to £452 GBP

B+
Cheapest Retailer
-
£250 GBP
B
Retailer 2
-
£428 GBP
View
Most Expensive
B
18carati
NK-5088KVVS2-0040 · Nov 4
£452 GBP
€580 EUR
View
2 more retailers have this diamond
Prices start from £250 GBPSave up to £202 GBP

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
£250 GBP