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Cushion|Lab Grown|IGI

1.53ct I SI1 Cushion Lab Grown Diamond

ID • I/SI1 • IGI LG425067812

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG425067812

Diamond specifications and retailer prices

From £642 GBP
$860 USD
As of October 31, 2026
Save £3,033 GBP (83%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: £3,675 GBP at MOH London · As of November 1, 2026
View at MOH London

About this 1.53ct lab-grown cushion diamond

This 1.53ct lab-grown cushion sits in the one-and-a-half to two carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG425067812 or 425067812. Listed at 6 retailers as of October 31, 2026, with prices from £642 to £3,675, a £3,033 spread on the same certified stone. MOH London lists it at £3,675. 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
I
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle36.8°
Pavilion angle41.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG425067812
Dimensions7.06 × 6.82 × 4.55 mm
L/W Ratio1.04
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
7.06 mm6.82 mm1.53 ctI / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG425067812
Side View
Table 57.0%Crown 36.8°Girdle: MED-STKPavilion 41.6°Culet: NoneDepth 66.7%

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 31
Current: £3,675 GBP|Low: £642 GBP|High: £3,719 GBP|Avg: £1,848 GBP
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 1, 2026
Retailer 2£642 GBP
Retailer 5£1,103 GBP
Retailer 4£1,144 GBP
Retailer 6£1,272 GBP
Retailer 7£1,573 GBP
Retailer 3£1,809 GBP
Retailer 8£3,275 GBP
MOH London£3,675 GBP

12 data points across 8 retailers

6 retailers£642 GBP to £3,675 GBP

A
Cheapest Retailer
-
£642 GBP
$860 USD
B
Retailer 2
-
£1,103 GBP
$1,478 USD
View
Final sale: no returns
Retailer 3
-
£1,144 GBP
$1,533 USD
View
Price last confirmed 20 days ago
B
Retailer 4
-
£1,272 GBP
$1,705 USD
View
B
Retailer 5
-
£1,809 GBP
$2,424 USD
View
Most Expensive
B
MOH London
LG425067812 · Nov 1
£3,675 GBP
View
5 more retailers have this diamond
Prices start from £642 GBPSave up to £3,033 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 Cushion
£642 GBP