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Round|Lab Grown|GIA

0.40ct F SI2 Round Lab Grown Diamond

EX • F/SI2 • GIA 1238192372

Certificate GIA 1238192372

Diamond specifications and retailer prices

From £229 GBP
₹29,255 INR
As of October 31, 2026
Save £285 GBP (55%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: £514 GBP at Yorxs · As of October 31, 2026
View at Yorxs

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 1238192372. Listed at 4 retailers as of October 31, 2026, with prices from £229 to £514, a £285 spread on the same certified stone. Yorxs lists it at £514. 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 1238192372
Dimensions4.72 × 4.74 × 2.94 mm
L/W Ratio1.00
Top View
4.72 mm4.74 mm0.40 ctF / SI2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1238192372
Side View
Table 56.0%CrownGirdle: MediumPavilionCulet: NoneDepth 62.1%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 31
Current: £385 GBP|Low: £229 GBP|High: £516 GBP|Avg: £394 GBP|+9.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Yorxs
November 1, 2026
Retailer 2£229 GBP
Retailer 3£306 GBP
Retailer 1£385 GBP
Yorxs£514 GBP
Retailer 4£516 GBP

5 data points across 5 retailers

4 retailers£229 GBP to £514 GBP

A
Cheapest Retailer
-
£229 GBP
₹29,255 INR
Retailer 2
-
£306 GBP
HK$3,200 HKD
View
Price last confirmed 21 days ago
B
Retailer 3
-
£385 GBP
View
Most Expensive
B
Yorxs
PTD64404 · Oct 31
£514 GBP
€656 EUR
View
3 more retailers have this diamond
Prices start from £229 GBPSave up to £285 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.

A
0.40ct Round
£229 GBP