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Round|Lab Grown|IGI

1.56ct J SI2 Round Lab Grown Diamond

ID • J/SI2 • IGI LG499191763

Shape and cutting style on the report: Round brilliant

Certificate IGI LG499191763

Diamond specifications and retailer prices

From £813 GBP
$1,089 USD
As of October 29, 2026
Save £2,401 GBP (75%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £3,214 GBP at MOH London · As of October 29, 2026
View at MOH London

About this 1.56ct lab-grown round diamond

This 1.56ct 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 LG499191763 or 499191763. Listed at 10 retailers as of October 29, 2026, with prices from £813 to £3,214, a £2,401 spread on the same certified stone. MOH London lists it at £3,214. 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

1.56
Carat
J
Colour
SI2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.9°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG499191763
Dimensions7.57 × 7.52 × 4.48 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
7.57 mm7.52 mm1.56 ctJ / SI2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG499191763
Side View
Table 59.0%Crown 32.9°Girdle: MediumPavilion 40.4°Culet: NoneDepth 59.4%

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: £3,214 GBP|Low: £650 GBP|High: £3,240 GBP|Avg: £1,380 GBP|-0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
October 29, 2026
Retailer 2£813 GBP
Retailer 6£821 GBP
Retailer 9£884 GBP
Retailer 11£911 GBP
Retailer 7£943 GBP
Retailer 12£943 GBP
Retailer 4£1,226 GBP
Retailer 3£1,355 GBP
Retailer 8£1,501 GBP
Retailer 10£1,767 GBP
Retailer 13£1,912 GBP
Retailer 5£2,108 GBP
MOH London£3,214 GBP

17 data points across 13 retailers

10 retailers£813 GBP to £3,214 GBP

A
Cheapest Retailer
-
£813 GBP
$1,089 USD
A
Retailer 2
-
£821 GBP
$1,100 USD
View
A
Retailer 3
-
£884 GBP
$1,185 USD
View
A
Retailer 4
-
£911 GBP
$1,220 USD
View
Final sale: no returns
B+
Retailer 5
-
£943 GBP
$1,263 USD
View
Retailer 6
-
£943 GBP
$1,263 USD
View
Price last confirmed 17 days ago
B
Retailer 7
-
£1,501 GBP
$2,011 USD
View
B
Retailer 8
-
£1,767 GBP
$2,368 USD
View
B
Retailer 9
-
£1,912 GBP
$2,562 USD
View
Most Expensive
B
MOH London
LG499191763 · Oct 29
£3,214 GBP
View
9 more retailers have this diamond
Prices start from £813 GBPSave up to £2,401 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
1.56ct Round
£813 GBP