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Round|Lab Grown|IGI

0.40ct K VS1 Round Lab Grown Diamond

VG • K/VS1 • IGI LGF5E14328

Certificate IGI LGF5E14328

Diamond specifications and retailer prices

From £250 GBP
As of November 6, 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 VS1 clarity (very-slightly-included), with a very-good cut grade and certified by IGI LGF5E14328 or F5E14328. 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. 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
K
Colour
VS1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginLab Grown
Grading LabIGI
CertificateIGI LGF5E14328
Dimensions4.64 × 4.70 × 2.96 mm
L/W Ratio1.01
Top View
4.64 mm4.70 mm0.40 ctK / VS1
OriginLab Grown
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LGF5E14328
Side View
Table 58.5%CrownGirdlePavilionCulet: NoneDepth 63.4%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Nov 6
Current: £452 GBP|Low: £244 GBP|High: £452 GBP|Avg: £350 GBP|+3.6%
18carati
Retailer 2
November 6, 2026
Retailer 2£250 GBP
18carati£452 GBP

36 data points across 2 retailers

3 retailers£250 GBP to £452 GBP

B
Cheapest Retailer
-
£250 GBP
C
Retailer 2
-
£445 GBP
View
Most Expensive
C
18carati
NK-4328KVS1-0040 · 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