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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 $823 NZD
$464 USD
As of October 30, 2026
Save $3,380 NZD (80%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $4,203 NZD 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 $823 to $4,203, a $3,380 spread on the same certified stone. Helzberg Diamonds lists it at $4,203. 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
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: $4,203 NZD|Low: $823 NZD|High: $4,203 NZD|Avg: $2,192 NZD
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$823 NZD
Retailer 10$966 NZD
Retailer 13$1,375 NZD
Retailer 5$1,439 NZD
Retailer 11$1,461 NZD
Retailer 2$1,499 NZD
Retailer 12$1,565 NZD
Retailer 15$1,705 NZD
Retailer 8$2,188 NZD
Retailer 6$2,889 NZD
Retailer 3$2,988 NZD
Retailer 14$3,351 NZD
Retailer 7$3,451 NZD
Retailer 9$3,673 NZD
Helzberg Diamonds$4,203 NZD

15 data points across 15 retailers

15 retailers$823 NZD to $4,203 NZD

A
Cheapest Retailer
-
$823 NZD
$464 USD
Final sale: no returns
A
Retailer 2
-
$966 NZD
£429 GBP
View
A
Retailer 3
-
$1,375 NZD
$775 USD
View
A
Retailer 4
-
$1,439 NZD
$811 USD
View
A
Retailer 5
-
$1,461 NZD
€784 EUR
View
A
Retailer 6
-
$1,499 NZD
£665 GBP
View
A
Retailer 7
-
$1,565 NZD
ZAR 14,249 ZAR
View
A
Retailer 8
-
$1,705 NZD
$961 USD
View
B+
Retailer 9
-
$2,188 NZD
$1,233 USD
View
B+
Retailer 10
-
$2,889 NZD
SGD 2,200 SGD
View
B+
Retailer 11
-
$2,988 NZD
$1,684 USD
View
B
Retailer 12
-
$3,351 NZD
£1,487 GBP
View
Retailer 13
-
$3,451 NZD
$1,945 USD
View
Price last confirmed 10 days ago
B+
Retailer 14
-
$3,673 NZD
$2,070 USD
View
Most Expensive
B
Helzberg Diamonds
ZXZOKGMJKPIH · Oct 30
$4,203 NZD
$2,369 USD
View
14 more retailers have this diamond
Prices start from $823 NZDSave up to $3,380 NZD

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
$823 NZD