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Round|Lab Grown|IGI

1.63ct J SI2 Round Lab Grown Diamond

ID • J/SI2 • IGI LG425065182

Shape and cutting style on the report: Round brilliant

Certificate IGI LG425065182

Diamond specifications and retailer prices

From £854 GBP
$1,137 USD
As of October 29, 2026
Save £2,344 GBP (73%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £3,198 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 LG425065182 or 425065182. Listed at 10 retailers as of October 29, 2026, with prices from £854 to £3,198, a £2,344 spread on the same certified stone. MOH London lists it at £3,198. 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
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.7°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG425065182
Dimensions7.57 × 7.54 × 4.66 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
7.57 mm7.54 mm1.63 ctJ / SI2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG425065182
Side View
Table 54.5%Crown 34.7°Girdle: MED-STKPavilion 40.2°Culet: NoneDepth 61.6%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: £3,198 GBP|Low: £871 GBP|High: £3,219 GBP|Avg: £1,532 GBP|+0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 29, 2026
Retailer 2£871 GBP
Retailer 4£929 GBP
Retailer 5£956 GBP
Retailer 9£1,064 GBP
Retailer 8£1,333 GBP
Retailer 7£1,416 GBP
Retailer 3£1,573 GBP
Retailer 6£1,951 GBP
Retailer 10£2,214 GBP
MOH London£3,198 GBP

10 data points across 10 retailers

10 retailers£854 GBP to £3,198 GBP

A
Cheapest Retailer
-
£854 GBP
$1,137 USD
A
Retailer 2
-
£871 GBP
$1,160 USD
View
A
Retailer 3
-
£929 GBP
$1,237 USD
View
A
Retailer 4
-
£956 GBP
$1,273 USD
View
Final sale: no returns
B+
Retailer 5
-
£990 GBP
$1,318 USD
View
Retailer 6
-
£990 GBP
$1,318 USD
View
Price last confirmed 17 days ago
B
Retailer 7
-
£1,573 GBP
$2,095 USD
View
B
Retailer 8
-
£1,856 GBP
$2,471 USD
View
B
Retailer 9
-
£1,951 GBP
$2,598 USD
View
Most Expensive
B
MOH London
LG425065182 · Oct 29
£3,198 GBP
View
9 more retailers have this diamond
Prices start from £854 GBPSave up to £2,344 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
£854 GBP