Oval|Lab Grown|GIA

0.40ct F SI1 Oval Lab Grown Diamond

EX • F/SI1 • GIA 6552109820

Certificate GIA 6552109820

Diamond specifications and retailer prices

From £251 GBP
₹32,002 INR
As of November 1, 2026
Save £437 GBP (64%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £688 GBP at Moon Ocean · As of November 1, 2026
View at Moon Ocean

About this 0.4ct lab-grown oval diamond

This 0.4ct lab-grown oval sits in the sub-half-carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6552109820. Listed at 13 retailers as of November 1, 2026, with prices from £251 to £688, a £437 spread on the same certified stone. Moon Ocean lists it at £688. 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 (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginLab Grown
Grading LabGIA
CertificateGIA 6552109820
Dimensions5.62 × 4.08 × 2.65 mm
L/W Ratio1.38
Top View
5.62 mm4.08 mm0.40 ctF / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6552109820
Side View
Table 58.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 64.8%

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: £688 GBP|Low: £250 GBP|High: £1,561 GBP|Avg: £622 GBP|-0.3%
Moon Ocean
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 2, 2026
Retailer 4£251 GBP
Retailer 11£325 GBP
Retailer 9£357 GBP
Retailer 10£420 GBP
Retailer 2£423 GBP
Retailer 5£438 GBP
Retailer 6£493 GBP
Retailer 7£514 GBP
Retailer 3£658 GBP
Moon Ocean£688 GBP
Retailer 8£1,551 GBP

40 data points across 11 retailers

13 retailers£251 GBP to £688 GBP

B+
Cheapest Retailer
-
£251 GBP
₹32,002 INR
Retailer 2
-
£325 GBP
$436 USD
View
Price last confirmed 31 days ago
B
Retailer 3
-
£357 GBP
$479 USD
View
Retailer 4
-
£379 GBP
$508 USD
View
Price last confirmed 38 days ago
Retailer 5
-
£420 GBP
$563 USD
View
Price last confirmed 30 days ago
B
Retailer 6
-
£423 GBP
View
B
Retailer 7
-
£438 GBP
$586 USD
View
B
Retailer 8
-
£493 GBP
$660 USD
View
B
Retailer 9
-
£514 GBP
€656 EUR
View
B
Retailer 10
-
£658 GBP
$882 USD
View
Most Expensive
B
Moon Ocean
NVN-3473905D4-820 · Nov 1
£688 GBP
View
10 more retailers have this diamond
Prices start from £251 GBPSave up to £437 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 Oval
£251 GBP