Oval|Lab Grown|IGI

10.31ct F SI1 Oval Lab Grown Diamond

ID • F/SI1 • IGI LG577377877

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG577377877

Diamond specifications and retailer prices

From £1,146 GBP
$1,538 USD
As of November 1, 2026
Save £4,286 GBP (79%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £5,432 GBP at Adiamor · As of November 2, 2026
View at Adiamor

About this 10.31ct lab-grown oval diamond

This 10.31ct lab-grown oval sits in the over five carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG577377877 or 577377877. Listed at 12 retailers as of November 1, 2026, with prices from £1,146 to £5,432, a £4,286 spread on the same certified stone. Adiamor lists it at £5,432. 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

10.31
Carat
F
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.9°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG577377877
Dimensions17.46 × 12.33 × 7.75 mm
L/W Ratio1.42
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
17.46 mm12.33 mm10.31 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG577377877
Side View
Table 60.0%Crown 35.9°Girdle: MediumPavilion 41°Culet: NoneDepth 62.9%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: £5,432 GBP|Low: £1,146 GBP|High: £12,065 GBP|Avg: £3,660 GBP
Adiamor
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
November 2, 2026
Retailer 12£1,146 GBP
Retailer 10£1,186 GBP
Retailer 4£1,247 GBP
Retailer 14£1,329 GBP
Retailer 13£1,457 GBP
Retailer 16£1,564 GBP
Retailer 15£1,710 GBP
Retailer 2£1,878 GBP
Retailer 9£2,092 GBP
Retailer 11£2,350 GBP
Retailer 3£2,491 GBP
Retailer 5£3,034 GBP
Retailer 7£5,308 GBP
Adiamor£5,432 GBP
Retailer 6£10,955 GBP
Retailer 8£12,065 GBP

6 data points across 16 retailers

12 retailers£1,146 GBP to £5,432 GBP

A
Cheapest Retailer
-
£1,146 GBP
$1,538 USD
A
Retailer 2
-
£1,186 GBP
View
A
Retailer 3
-
£1,247 GBP
$1,673 USD
View
A
Retailer 4
-
£1,329 GBP
$1,784 USD
View
A
Retailer 5
-
£1,457 GBP
$1,955 USD
View
A
Retailer 6
-
£1,564 GBP
HK$16,400 HKD
View
A
Retailer 7
-
£1,710 GBP
$2,295 USD
View
A
Retailer 8
-
£1,878 GBP
View
B+
Retailer 9
-
£2,092 GBP
$2,808 USD
View
B+
Retailer 10
-
£2,350 GBP
$3,154 USD
View
B+
Retailer 11
-
£2,491 GBP
$3,343 USD
View
Most Expensive
B
Adiamor
D-82828868 · Nov 2
£5,432 GBP
$7,289 USD
View
11 more retailers have this diamond
Prices start from £1,146 GBPSave up to £4,286 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
10.31ct Oval
£1,146 GBP