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Round|Lab Grown|IGI

9.12ct G SI1 Round Lab Grown Diamond

ID • G/SI1 • IGI LG602300701

Shape and cutting style on the report: Round brilliant

Certificate IGI LG602300701

Diamond specifications and retailer prices

From £925 GBP
$1,239 USD
As of October 29, 2026
Save £3,501 GBP (79%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £4,426 GBP at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 9.12ct lab-grown round diamond

This 9.12ct 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 LG602300701 or 602300701. Listed at 15 retailers as of October 29, 2026, with prices from £925 to £4,426, a £3,501 spread on the same certified stone. Brilliant Earth lists it at £4,426. 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

9.12
Carat
G
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.1°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG602300701
Dimensions13.42 × 13.36 × 8.30 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
HEARTS & ARROWS This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
13.42 mm13.36 mm9.12 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG602300701
Side View
Table 57.0%Crown 35.1°Girdle: MediumPavilion 41°Culet: NoneDepth 62.0%

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: Oct 29
Current: £4,426 GBP|Low: £925 GBP|High: £5,433 GBP|Avg: £2,012 GBP|-18.5%
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 15£925 GBP
Retailer 11£1,006 GBP
Retailer 3£1,073 GBP
Retailer 13£1,073 GBP
Retailer 12£1,091 GBP
Retailer 10£1,202 GBP
Retailer 6£1,493 GBP
Retailer 8£1,505 GBP
Retailer 5£1,699 GBP
Retailer 9£1,760 GBP
Retailer 14£2,011 GBP
Retailer 4£2,055 GBP
Retailer 2£3,447 GBP
Retailer 7£4,247 GBP
Brilliant Earth£4,426 GBP

40 data points across 15 retailers

15 retailers£925 GBP to £4,426 GBP

A
Cheapest Retailer
-
£925 GBP
$1,239 USD
A
Retailer 2
-
£1,006 GBP
$1,348 USD
View
Retailer 3
-
£1,073 GBP
$1,438 USD
View
Price last confirmed 21 days ago
A
Retailer 4
-
£1,073 GBP
$1,438 USD
View
Retailer 5
-
£1,091 GBP
View
Price last confirmed 15 days ago
A
Retailer 6
-
£1,202 GBP
$1,610 USD
View
B+
Retailer 7
-
£1,493 GBP
$2,001 USD
View
B+
Retailer 8
-
£1,505 GBP
View
B+
Retailer 9
-
£1,699 GBP
$2,277 USD
View
B+
Retailer 10
-
£1,760 GBP
€2,246 EUR
View
B+
Retailer 11
-
£2,011 GBP
$2,695 USD
View
B
Retailer 12
-
£2,055 GBP
$2,754 USD
View
B
Retailer 13
-
£3,447 GBP
View
B
Retailer 14
-
£4,247 GBP
$5,691 USD
View
Most Expensive
B
Brilliant Earth
8384613A · Oct 31
£4,426 GBP
$5,930 USD
View
14 more retailers have this diamond
Prices start from £925 GBPSave up to £3,501 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
9.12ct Round
£925 GBP