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Round|Lab Grown|IGI

1.63ct J SI2 Round Lab Grown Diamond

EX • J/SI2 • IGI LG425065582

Shape and cutting style on the report: Round brilliant

Certificate IGI LG425065582

Diamond specifications and retailer prices

From £849 GBP
$1,137 USD
As of October 29, 2026
Save £2,330 GBP (73%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £3,178 GBP at MOH London · As of October 29, 2026
View at MOH London

About this 1.63ct lab-grown round diamond

This 1.63ct lab-grown round sits in the one-and-a-half to two carat band, graded J colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG425065582 or 425065582. Listed at 10 retailers as of October 29, 2026, with prices from £849 to £3,178, a £2,330 spread on the same certified stone. MOH London lists it at £3,178. 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

1.63
Carat
J
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.2°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG425065582
Dimensions7.58 × 7.57 × 4.59 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
7.58 mm7.57 mm1.63 ctJ / SI2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG425065582
Side View
Table 56.5%Crown 32.2°Girdle: MED-STKPavilion 40.3°Culet: NoneDepth 60.5%

Caratlytics Score

How it works →
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: £3,178 GBP|Low: £866 GBP|High: £3,204 GBP|Avg: £1,597 GBP|-0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 29, 2026
Retailer 2£866 GBP
Retailer 4£923 GBP
Retailer 5£950 GBP
Retailer 7£1,407 GBP
Retailer 3£1,564 GBP
Retailer 6£1,939 GBP
Retailer 8£2,200 GBP
MOH London£3,178 GBP

12 data points across 8 retailers

10 retailers£849 GBP to £3,178 GBP

A
Cheapest Retailer
-
£849 GBP
$1,137 USD
A
Retailer 2
-
£866 GBP
$1,160 USD
View
A
Retailer 3
-
£923 GBP
$1,237 USD
View
B+
Retailer 4
-
£950 GBP
$1,273 USD
View
Final sale: no returns
Retailer 5
-
£984 GBP
$1,318 USD
View
Price last confirmed 17 days ago
B+
Retailer 6
-
£984 GBP
$1,318 USD
View
B
Retailer 7
-
£1,564 GBP
$2,095 USD
View
B
Retailer 8
-
£1,844 GBP
$2,471 USD
View
B
Retailer 9
-
£1,939 GBP
$2,598 USD
View
Most Expensive
B
MOH London
LG425065582 · Oct 29
£3,178 GBP
View
9 more retailers have this diamond
Prices start from £849 GBPSave up to £2,330 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
1.63ct Round
£849 GBP