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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 $1,409 AUD
$990 USD
As of October 31, 2026
Save $4,572 AUD (76%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $9,293 AUD at MOH London · As of November 1, 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: $9,293 AUD|Low: $1,409 AUD|High: $9,418 AUD|Avg: $5,116 AUD
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 1, 2026
Retailer 2$1,409 AUD
Retailer 6$3,140 AUD
Retailer 4$3,254 AUD
Retailer 7$3,495 AUD
Retailer 8$4,163 AUD
Retailer 5$5,092 AUD
Retailer 3$5,982 AUD
MOH London$9,293 AUD
Retailer 9$9,316 AUD

20 data points across 9 retailers

7 retailers$1,409 AUD to $5,982 AUD

A
Cheapest Retailer
-
$1,409 AUD
$990 USD
B
Retailer 2
-
$3,140 AUD
$2,206 USD
View
Final sale: no returns
Retailer 3
-
$3,254 AUD
$2,286 USD
View
Price last confirmed 21 days ago
B
Retailer 4
-
$3,495 AUD
$2,455 USD
View
B
Retailer 5
-
$5,092 AUD
$3,577 USD
View
B
Retailer 6
-
$5,982 AUD
ZAR 67,882 ZAR
View
Most Expensive
MOH London
LG436045211 · Nov 1
$9,293 AUD
£5,140 GBP
View
Price under review
6 more retailers have this diamond
Prices start from $1,409 AUDSave up to $4,572 AUD

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
$1,409 AUD