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Oval|Lab Grown|IGI

10.66ct F SI1 Oval Lab Grown Diamond

ID • F/SI1 • IGI LG579385493

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG579385493

Diamond specifications and retailer prices

From £1,184 GBP
$1,589 USD
As of November 1, 2026
Save £4,608 GBP (80%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £5,792 GBP at Adiamor · As of November 2, 2026
View at Adiamor

About this 10.66ct lab-grown oval diamond

This 10.66ct 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 LG579385493 or 579385493. Listed at 13 retailers as of November 1, 2026, with prices from £1,184 to £5,792, a £4,608 spread on the same certified stone. Adiamor lists it at £5,792. 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

10.66
Carat
F
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.9°
Pavilion angle41.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG579385493
Dimensions18.34 × 12.24 × 7.63 mm
L/W Ratio1.50
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
18.34 mm12.24 mm10.66 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG579385493
Side View
Table 62.0%Crown 34.9°Girdle: MED-STKPavilion 41.1°Culet: NoneDepth 62.3%

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: £5,792 GBP|Low: £1,184 GBP|High: £12,474 GBP|Avg: £3,650 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 3, 2026
Retailer 13£1,184 GBP
Retailer 9£1,226 GBP
Retailer 5£1,288 GBP
Retailer 15£1,373 GBP
Retailer 14£1,502 GBP
Retailer 3£1,622 GBP
Retailer 16£1,762 GBP
Retailer 2£1,946 GBP
Retailer 11£2,160 GBP
Retailer 12£2,429 GBP
Retailer 4£2,575 GBP
Retailer 6£3,138 GBP
Retailer 10£4,195 GBP
Adiamor£5,792 GBP
Retailer 7£11,327 GBP
Retailer 8£12,474 GBP

7 data points across 16 retailers

13 retailers£1,184 GBP to £5,792 GBP

A
Cheapest Retailer
-
£1,184 GBP
$1,589 USD
A
Retailer 2
-
£1,226 GBP
View
A
Retailer 3
-
£1,288 GBP
$1,729 USD
View
A
Retailer 4
-
£1,373 GBP
$1,843 USD
View
A
Retailer 5
-
£1,502 GBP
$2,015 USD
View
A
Retailer 6
-
£1,622 GBP
HK$17,000 HKD
View
A
Retailer 7
-
£1,762 GBP
$2,364 USD
View
A
Retailer 8
-
£1,946 GBP
View
B+
Retailer 9
-
£2,160 GBP
$2,899 USD
View
B+
Retailer 10
-
£2,429 GBP
$3,259 USD
View
B+
Retailer 11
-
£2,575 GBP
$3,455 USD
View
B
Retailer 12
-
£4,195 GBP
$5,630 USD
View
Most Expensive
B
Adiamor
D-82828870 · Nov 2
£5,792 GBP
$7,772 USD
View
12 more retailers have this diamond
Prices start from £1,184 GBPSave up to £4,608 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
10.66ct Oval
£1,184 GBP