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Round|Lab Grown|IGI

1.63ct J SI2 Round Lab Grown Diamond

EX • J/SI2 • IGI LG436074625

Shape and cutting style on the report: Round brilliant

Certificate IGI LG436074625

Diamond specifications and retailer prices

From £854 GBP
$1,137 USD
As of October 29, 2026
Save £2,331 GBP (73%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £3,185 GBP at MOH London · As of October 27, 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 LG436074625 or 436074625. Listed at 10 retailers as of October 27, 2026, with prices from £854 to £3,185, a £2,331 spread on the same certified stone. MOH London lists it at £3,185. 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 angle32.3°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG436074625
Dimensions7.72 × 7.68 × 4.55 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
7.72 mm7.68 mm1.63 ctJ / SI2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG436074625
Side View
Table 58.5%Crown 32.3°Girdle: MediumPavilion 40.5°Culet: NoneDepth 59.1%

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: £3,185 GBP|Low: £871 GBP|High: £3,223 GBP|Avg: £1,620 GBP|+0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 25, 2026
Retailer 2£871 GBP
Retailer 4£956 GBP
Retailer 7£1,064 GBP
Retailer 6£1,416 GBP
Retailer 3£1,573 GBP
Retailer 5£1,951 GBP
Retailer 8£2,214 GBP
MOH London£3,185 GBP

10 data points across 8 retailers

10 retailers£854 GBP to £3,185 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
Retailer 5
-
£990 GBP
$1,318 USD
View
Price last confirmed 17 days ago
B+
Retailer 6
-
£990 GBP
$1,318 USD
View
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
LG436074625 · Oct 27
£3,185 GBP
View
9 more retailers have this diamond
Prices start from £854 GBPSave up to £2,331 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