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Round|Lab Grown|GIA

0.40ct F SI2 Round Lab Grown Diamond

EX • F/SI2 • GIA 6137982392

Certificate GIA 6137982392

Diamond specifications and retailer prices

From £306 GBP
$410 USD
As of November 1, 2026
Save £630 GBP (67%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: £936 GBP at MOH London · As of November 1, 2026
View at MOH London

About this 0.4ct lab-grown round diamond

This 0.4ct lab-grown round sits in the sub-half-carat band, graded F colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6137982392. Listed at 6 retailers as of November 1, 2026, with prices from £306 to £936, a £630 spread on the same certified stone. MOH London lists it at £936. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

0.40
Carat
F
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabGIA
CertificateGIA 6137982392
Dimensions4.70 × 4.68 × 2.94 mm
L/W Ratio1.00
Top View
4.70 mm4.68 mm0.40 ctF / SI2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6137982392
Side View
Table 58.0%CrownGirdle: MED-STKPavilionCulet: NoneDepth 62.7%

Caratlytics Score

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

Price History

Last verified: Nov 1
Current: £936 GBP|Low: £306 GBP|High: £941 GBP|Avg: £514 GBP|-0.6%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 1, 2026
Retailer 4£306 GBP
Retailer 6£373 GBP
Retailer 5£447 GBP
Retailer 7£500 GBP
Retailer 3£509 GBP
Retailer 2£545 GBP
MOH London£936 GBP

19 data points across 7 retailers

6 retailers£306 GBP to £936 GBP

B+
Cheapest Retailer
-
£306 GBP
$410 USD
B+
Retailer 2
-
£373 GBP
HK$3,900 HKD
View
B
Retailer 3
-
£447 GBP
$599 USD
View
B
Retailer 4
-
£509 GBP
View
B
Retailer 5
-
£545 GBP
€696 EUR
View
Most Expensive
B
MOH London
D5FCCFC0A · Nov 1
£936 GBP
View
5 more retailers have this diamond
Prices start from £306 GBPSave up to £630 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
£306 GBP