Radiant|Lab Grown|IGI

9.00ct E SI1 Radiant Lab Grown Diamond

ID • E/SI1 • IGI LG683582577

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG683582577

Diamond specifications and retailer prices

From £1,905 GBP
€2,416 EUR
As of October 23, 2026
Save £1,938 GBP (50%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £4,912 GBP at Adiamor · As of October 19, 2026
View at Adiamor

About this 9ct lab-grown radiant diamond

This 9ct lab-grown radiant sits in the over five carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG683582577 or 683582577. Listed at 14 retailers as of October 23, 2026, with a 102% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

9.00
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.5°
Pavilion angle34.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG683582577
Dimensions15.42 × 9.65 × 7.11 mm
L/W Ratio1.60
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
15.42 mm9.65 mm9.00 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG683582577
Side View
Table 62.0%Crown 32.5°Girdle: ThickPavilion 34.8°Culet: NoneDepth 73.7%

Caratlytics Score

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B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 23
Current: £4,912 GBP|Low: £1,108 GBP|High: £4,912 GBP|Avg: £2,847 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
October 23, 2026
Retailer 14£1,108 GBP
Retailer 13£1,148 GBP
Retailer 12£1,277 GBP
Retailer 9£1,374 GBP
Retailer 8£1,659 GBP
Retailer 3£1,816 GBP
Retailer 2£1,905 GBP
Retailer 10£2,141 GBP
Retailer 11£3,410 GBP
Retailer 7£3,710 GBP
Retailer 5£3,843 GBP
Retailer 6£4,034 GBP
Retailer 4£4,419 GBP
Adiamor£4,912 GBP

23 data points across 14 retailers

14 retailers£1,905 GBP to £3,843 GBP

Retailer 1
-
£1,148 GBP
$1,529 USD
Price last confirmed 17 days ago
Retailer 2
-
£1,277 GBP
$1,700 USD
View
Price last confirmed 10 days ago
Retailer 3
-
£1,374 GBP
View
Price last confirmed 13 days ago
Retailer 4
-
£1,659 GBP
View
Price last confirmed 11 days ago
Retailer 5
-
£1,816 GBP
$2,419 USD
View
Price last confirmed 11 days ago
B+
Retailer 6
-
£1,905 GBP
€2,416 EUR
View
Retailer 7
-
£2,141 GBP
$2,851 USD
View
Price last confirmed 10 days ago
Retailer 8
-
£2,153 GBP
$2,867 USD
View
Price last confirmed 13 days ago
Retailer 9
-
£3,410 GBP
$4,541 USD
View
Price last confirmed 11 days ago
Retailer 10
-
£3,710 GBP
View
Price last confirmed 11 days ago
B
Retailer 11
-
£3,843 GBP
SGD 6,916 SGD
View
Retailer 12
-
£4,034 GBP
$5,372 USD
View
Price last confirmed 11 days ago
Retailer 13
-
£4,419 GBP
$5,885 USD
View
Price last confirmed 25 days ago
Most Expensive
Adiamor
D-67475598 · Oct 19
£4,912 GBP
$6,541 USD
View
Price last confirmed 10 days ago
13 more retailers have this diamond
Prices start from £1,905 GBPSave up to £1,938 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+
9.00ct Radiant
£1,905 GBP