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Round|Lab Grown|IGI

10.09ct G SI1 Round Lab Grown Diamond

ID • G/SI1 • IGI LG627422142

Shape and cutting style on the report: Round brilliant

Certificate IGI LG627422142

Diamond specifications and retailer prices

From £1,499 GBP
$2,008 USD
As of November 1, 2026
Save £8,017 GBP (84%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £9,516 GBP at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 10.09ct lab-grown round diamond

This 10.09ct lab-grown round sits in the over five carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG627422142 or 627422142. Listed at 17 retailers as of October 31, 2026, with prices from £1,499 to £9,516, a £8,017 spread on the same certified stone. Brilliant Earth lists it at £9,516. 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

10.09
Carat
G
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.6°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG627422142
Dimensions13.85 × 13.77 × 8.51 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
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
13.85 mm13.77 mm10.09 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG627422142
Side View
Table 57.0%Crown 35.6°Girdle: MED-STKPavilion 40.4°Culet: NoneDepth 61.6%

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: £9,516 GBP|Low: £1,438 GBP|High: £9,516 GBP|Avg: £2,711 GBP
Brilliant Earth
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
November 1, 2026
Retailer 11£1,499 GBP
Retailer 2£1,551 GBP
Retailer 10£1,630 GBP
Retailer 5£1,678 GBP
Retailer 12£1,738 GBP
Retailer 15£1,862 GBP
Retailer 7£2,102 GBP
Retailer 8£2,362 GBP
Retailer 14£2,389 GBP
Retailer 3£2,598 GBP
Retailer 4£2,720 GBP
Retailer 9£2,747 GBP
Retailer 6£4,954 GBP
Retailer 13£5,316 GBP
Brilliant Earth£9,516 GBP

42 data points across 15 retailers

17 retailers£1,499 GBP to £9,516 GBP

A
Cheapest Retailer
-
£1,499 GBP
$2,008 USD
A
Retailer 2
-
£1,551 GBP
View
A
Retailer 3
-
£1,630 GBP
$2,184 USD
View
A
Retailer 4
-
£1,678 GBP
$2,248 USD
View
Final sale: no returns
Retailer 5
-
£1,738 GBP
$2,329 USD
View
Price last confirmed 21 days ago
A
Retailer 6
-
£1,738 GBP
$2,329 USD
View
A
Retailer 7
-
£1,862 GBP
$2,495 USD
View
A
Retailer 8
-
£2,102 GBP
$2,817 USD
View
B+
Retailer 9
-
£2,362 GBP
View
B+
Retailer 10
-
£2,389 GBP
$3,201 USD
View
B+
Retailer 11
-
£2,598 GBP
$3,481 USD
View
B+
Retailer 12
-
£2,720 GBP
$3,644 USD
View
B+
Retailer 13
-
£2,747 GBP
€3,506 EUR
View
B
Retailer 14
-
£4,954 GBP
$6,638 USD
View
B
Retailer 15
-
£5,316 GBP
$7,123 USD
View
B
Retailer 16
-
£6,082 GBP
$8,150 USD
View
Most Expensive
B
Brilliant Earth
20602725A · Oct 31
£9,516 GBP
$12,750 USD
View
16 more retailers have this diamond
Prices start from £1,499 GBPSave up to £8,017 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
10.09ct Round
£1,499 GBP