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Cushion|Lab Grown|IGI

1.80ct J VS1 Cushion Lab Grown Diamond

ID • J/VS1 • IGI LG436045211

Shape and cutting style on the report: Square cushion modified brilliant

Certificate IGI LG436045211

Diamond specifications and retailer prices

From £739 GBP
$990 USD
As of October 31, 2026
Save £2,397 GBP (76%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: £4,898 GBP at MOH London · As of October 29, 2026
View at MOH London

About this 1.8ct lab-grown cushion diamond

This 1.8ct lab-grown cushion sits in the one-and-a-half to two carat band, graded J colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG436045211 or 436045211. Listed at 7 retailers as of October 29, 2026, with a 324% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.80
Carat
J
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle34.9°
Pavilion angle38.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG436045211
Dimensions7.11 × 7.05 × 4.66 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
7.11 mm7.05 mm1.80 ctJ / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG436045211
Side View
Table 58.0%Crown 34.9°Girdle: STK-VTKPavilion 38.9°Culet: NoneDepth 66.1%

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: £4,898 GBP|Low: £739 GBP|High: £4,937 GBP|Avg: £2,685 GBP|+0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 30, 2026
Retailer 2£739 GBP
Retailer 6£1,646 GBP
Retailer 4£1,706 GBP
Retailer 7£1,832 GBP
Retailer 8£2,182 GBP
Retailer 5£2,670 GBP
Retailer 3£3,136 GBP
Retailer 9£4,884 GBP
MOH London£4,898 GBP

19 data points across 9 retailers

7 retailers£739 GBP to £3,136 GBP

A
Cheapest Retailer
-
£739 GBP
$990 USD
B
Retailer 2
-
£1,646 GBP
$2,206 USD
View
Final sale: no returns
Retailer 3
-
£1,706 GBP
$2,286 USD
View
Price last confirmed 21 days ago
B
Retailer 4
-
£1,832 GBP
$2,455 USD
View
B
Retailer 5
-
£2,670 GBP
$3,577 USD
View
B
Retailer 6
-
£3,136 GBP
ZAR 67,882 ZAR
View
Most Expensive
MOH London
LG436045211 · Oct 29
£4,898 GBP
View
Price under review
6 more retailers have this diamond
Prices start from £739 GBPSave up to £2,397 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
1.80ct Cushion
£739 GBP