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Round|Lab Grown|GIA

0.40ct F SI1 Round Lab Grown Diamond

EX • F/SI1 • GIA 7373280205

Certificate GIA 7373280205

Diamond specifications and retailer prices

From £411 GBP
HK$4,300 HKD
As of November 1, 2026
Save £577 GBP (58%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: £988 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 SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 7373280205. Listed at 5 retailers as of November 1, 2026, with prices from £411 to £988, a £577 spread on the same certified stone. MOH London lists it at £988. 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
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabGIA
CertificateGIA 7373280205
Dimensions4.67 × 4.71 × 2.94 mm
L/W Ratio1.01
Top View
4.67 mm4.71 mm0.40 ctF / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 7373280205
Side View
Table 55.0%CrownGirdlePavilionCulet: NDepth 62.6%

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 1
Current: £988 GBP|Low: £342 GBP|High: £1,000 GBP|Avg: £563 GBP|-1.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 2, 2026
Retailer 6£342 GBP
Retailer 5£411 GBP
Retailer 2£518 GBP
Retailer 3£574 GBP
Retailer 4£643 GBP
MOH London£988 GBP

41 data points across 6 retailers

5 retailers£411 GBP to £988 GBP

B+
Cheapest Retailer
-
£411 GBP
HK$4,300 HKD
B
Retailer 2
-
£518 GBP
View
B
Retailer 3
-
£574 GBP
€733 EUR
View
Retailer 4
-
£643 GBP
A$1,326 AUD
View
Price last confirmed 29 days ago
Most Expensive
B
MOH London
C91D345AC · Nov 1
£988 GBP
View
4 more retailers have this diamond
Prices start from £411 GBPSave up to £577 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
£411 GBP