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Cushion|Lab Grown|IGI

1.20ct E VS1 Cushion Lab Grown Diamond

ID • E/VS1 • IGI LG803604001

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

Certificate IGI LG803604001

Diamond specifications and retailer prices

From $333 AUD
$234 USD
As of October 25, 2026
Save $1,446 AUD (81%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $1,780 AUD at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 1.2ct lab-grown cushion diamond

This 1.2ct lab-grown cushion sits in the classic one-carat band, graded E colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG803604001 or 803604001. Listed at 15 retailers as of October 25, 2026, with prices from $333 to $1,780, a $1,446 spread on the same certified stone. Brilliant Earth lists it at $1,780. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.20
Carat
E
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.6°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG803604001
Dimensions6.24 × 6.20 × 4.10 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
6.24 mm6.20 mm1.20 ctE / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG803604001
Side View
Table 59.0%Crown 34.6°Girdle: THN-STKPavilion 40.2°Culet: NoneDepth 66.1%

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 25
Current: $1,780 AUD|Low: $289 AUD|High: $1,780 AUD|Avg: $810 AUD|+11.6%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
October 31, 2026
Retailer 7$333 AUD
Retailer 11$343 AUD
Retailer 14$416 AUD
Retailer 8$506 AUD
Retailer 16$544 AUD
Retailer 12$581 AUD
Retailer 2$600 AUD
Retailer 10$609 AUD
Retailer 9$789 AUD
Retailer 6$790 AUD
Retailer 5$814 AUD
Retailer 3$911 AUD
Retailer 4$967 AUD
Retailer 15$1,141 AUD
Retailer 17$1,510 AUD
Retailer 13$1,643 AUD
Brilliant Earth$1,780 AUD

17 data points across 17 retailers

15 retailers$333 AUD to $1,780 AUD

A
Cheapest Retailer
-
$333 AUD
$234 USD
A
Retailer 2
-
$343 AUD
$241 USD
View
Final sale: no returns
A
Retailer 3
-
$416 AUD
£230 GBP
View
A
Retailer 4
-
$544 AUD
€364 EUR
View
A
Retailer 5
-
$581 AUD
$408 USD
View
A
Retailer 6
-
$600 AUD
£332 GBP
View
A
Retailer 7
-
$609 AUD
$428 USD
View
B+
Retailer 8
-
$790 AUD
$555 USD
View
Retailer 9
-
$814 AUD
View
Price last confirmed 7 days ago
B+
Retailer 10
-
$911 AUD
$640 USD
View
B+
Retailer 11
-
$967 AUD
View
B+
Retailer 12
-
$1,141 AUD
$801 USD
View
B
Retailer 13
-
$1,510 AUD
£835 GBP
View
B
Retailer 14
-
$1,643 AUD
$1,154 USD
View
Most Expensive
B
Brilliant Earth
19740795A · Oct 29
$1,780 AUD
$1,250 USD
View
14 more retailers have this diamond
Prices start from $333 AUDSave up to $1,446 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
1.20ct Cushion
$333 AUD