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Cushion|Lab Grown|IGI

1.31ct E FL Cushion Lab Grown Diamond

ID • E/FL • IGI LG840634921

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG840634921

Diamond specifications and retailer prices

From $661 AUD
$464 USD
As of October 30, 2026
Save $2,712 AUD (80%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $3,373 AUD at Helzberg Diamonds · As of October 30, 2026
View at Helzberg Diamonds

About this 1.31ct lab-grown cushion diamond

This 1.31ct lab-grown cushion sits in the one-and-a-quarter to one-and-a-half carat band, graded E colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG840634921 or 840634921. Listed at 15 retailers as of October 30, 2026, with prices from $661 to $3,373, a $2,712 spread on the same certified stone. Helzberg Diamonds lists it at $3,373. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.31
Carat
E
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.2°
Pavilion angle35.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG840634921
Dimensions7.59 × 5.48 × 3.81 mm
L/W Ratio1.39
Girdle conditionFaceted
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
7.59 mm5.48 mm1.31 ctE / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG840634921
Side View
Table 61.0%Crown 35.2°Girdle: STK-THKPavilion 35.8°Culet: NoneDepth 69.5%

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 30
Current: $3,373 AUD|Low: $661 AUD|High: $3,373 AUD|Avg: $1,759 AUD
Helzberg Diamonds
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
October 31, 2026
Retailer 4$661 AUD
Retailer 10$775 AUD
Retailer 13$1,103 AUD
Retailer 5$1,155 AUD
Retailer 11$1,172 AUD
Retailer 2$1,203 AUD
Retailer 12$1,256 AUD
Retailer 15$1,368 AUD
Retailer 8$1,755 AUD
Retailer 6$2,318 AUD
Retailer 3$2,398 AUD
Retailer 14$2,688 AUD
Retailer 7$2,769 AUD
Retailer 9$2,947 AUD
Helzberg Diamonds$3,373 AUD

15 data points across 15 retailers

15 retailers$661 AUD to $3,373 AUD

A
Cheapest Retailer
-
$661 AUD
$464 USD
Final sale: no returns
A
Retailer 2
-
$775 AUD
£429 GBP
View
A
Retailer 3
-
$1,103 AUD
$775 USD
View
A
Retailer 4
-
$1,155 AUD
$811 USD
View
A
Retailer 5
-
$1,172 AUD
€784 EUR
View
A
Retailer 6
-
$1,203 AUD
£665 GBP
View
A
Retailer 7
-
$1,256 AUD
ZAR 14,249 ZAR
View
A
Retailer 8
-
$1,368 AUD
$961 USD
View
B+
Retailer 9
-
$1,755 AUD
$1,233 USD
View
B+
Retailer 10
-
$2,318 AUD
SGD 2,200 SGD
View
B+
Retailer 11
-
$2,398 AUD
$1,684 USD
View
B
Retailer 12
-
$2,688 AUD
£1,487 GBP
View
Retailer 13
-
$2,769 AUD
$1,945 USD
View
Price last confirmed 10 days ago
B+
Retailer 14
-
$2,947 AUD
$2,070 USD
View
Most Expensive
B
Helzberg Diamonds
ZXZOKGMJKPIH · Oct 30
$3,373 AUD
$2,369 USD
View
14 more retailers have this diamond
Prices start from $661 AUDSave up to $2,712 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
1.31ct Cushion
$661 AUD