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1.53ct J SI1 Round Lab Grown Diamond

ID • J/SI1 • IGI LG492133924

Shape and cutting style on the report: Round brilliant

Certificate IGI LG492133924

Diamond specifications and retailer prices

From £634 GBP
$850 USD
As of October 31, 2026
Save £2,675 GBP (81%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £3,310 GBP at MOH London · As of October 29, 2026
View at MOH London

About this 1.53ct lab-grown round diamond

This 1.53ct lab-grown round sits in the one-and-a-half to two carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG492133924 or 492133924. Listed at 11 retailers as of October 29, 2026, with prices from £634 to £3,310, a £2,675 spread on the same certified stone. MOH London lists it at £3,310. 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

1.53
Carat
J
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.3°
Pavilion angle41.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG492133924
Dimensions7.37 × 7.34 × 4.59 mm
L/W Ratio1.00
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
7.37 mm7.34 mm1.53 ctJ / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG492133924
Side View
Table 58.0%Crown 35.3°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 62.5%

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 31
Current: £3,310 GBP|Low: £634 GBP|High: £3,336 GBP|Avg: £1,466 GBP|+0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 30, 2026
Retailer 2£634 GBP
Retailer 3£884 GBP
Retailer 6£988 GBP
Retailer 4£1,025 GBP
Retailer 10£1,109 GBP
Retailer 7£1,153 GBP
Retailer 9£1,454 GBP
Retailer 5£1,626 GBP
Retailer 8£2,020 GBP
MOH London£3,310 GBP

16 data points across 10 retailers

11 retailers£634 GBP to £3,310 GBP

A
Cheapest Retailer
-
£634 GBP
$850 USD
B+
Retailer 2
-
£884 GBP
$1,184 USD
View
B+
Retailer 3
-
£961 GBP
$1,288 USD
View
B+
Retailer 4
-
£988 GBP
$1,324 USD
View
Final sale: no returns
B+
Retailer 5
-
£1,025 GBP
$1,373 USD
View
Retailer 6
-
£1,025 GBP
$1,373 USD
View
Price last confirmed 20 days ago
B+
Retailer 7
-
£1,153 GBP
$1,545 USD
View
B
Retailer 8
-
£1,626 GBP
$2,179 USD
View
B
Retailer 9
-
£1,921 GBP
$2,574 USD
View
B
Retailer 10
-
£2,020 GBP
$2,706 USD
View
Most Expensive
B
MOH London
LG492133924 · Oct 29
£3,310 GBP
View
10 more retailers have this diamond
Prices start from £634 GBPSave up to £2,675 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
1.53ct Round
£634 GBP