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Cushion|Lab Grown|IGI

1.50ct E IF Cushion Lab Grown Diamond

EX • E/IF • IGI LG798603812

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG798603812

Diamond specifications and retailer prices

From $862 NZD
$486 USD
As of October 30, 2026
Save $4,073 NZD (83%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $4,935 NZD at Queensmith · As of October 27, 2026
View at Queensmith

About this 1.5ct lab-grown cushion diamond

This 1.5ct lab-grown cushion sits in the one-and-a-half to two carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG798603812 or 798603812. Listed at 19 retailers as of October 27, 2026, with prices from $862 to $4,935, a $4,073 spread on the same certified stone. Queensmith lists it at $4,935. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.50
Carat
E
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.4°
Pavilion angle34.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG798603812
Dimensions7.70 × 6.02 × 3.86 mm
L/W Ratio1.28
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
7.70 mm6.02 mm1.50 ctE / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG798603812
Side View
Table 62.0%Crown 34.4°Girdle: MED-STKPavilion 34.9°Culet: NoneDepth 64.1%

Caratlytics Score

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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: $2,715 NZD|Low: $862 NZD|High: $5,376 NZD|Avg: $2,372 NZD|+0.5%
Retailer 1
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 30, 2026
Retailer 9$862 NZD
Retailer 7$956 NZD
Retailer 8$1,281 NZD
Retailer 15$1,286 NZD
Retailer 13$1,466 NZD
Retailer 2$1,512 NZD
Retailer 11$1,578 NZD
Retailer 14$1,643 NZD
Retailer 4$1,865 NZD
Retailer 12$2,226 NZD
Retailer 17$2,310 NZD
Retailer 1$2,715 NZD
Retailer 6$3,129 NZD
Retailer 3$3,445 NZD
Retailer 16$3,515 NZD
Retailer 5$3,577 NZD
Retailer 10$4,294 NZD

38 data points across 17 retailers

19 retailers$862 NZD to $4,935 NZD

A
Cheapest Retailer
-
$862 NZD
$486 USD
Final sale: no returns
A
Retailer 2
-
$956 NZD
$539 USD
View
A
Retailer 3
-
$1,281 NZD
$722 USD
View
A
Retailer 4
-
$1,286 NZD
$725 USD
View
A
Retailer 5
-
$1,466 NZD
€787 EUR
View
A
Retailer 6
-
$1,512 NZD
$852 USD
View
A
Retailer 7
-
$1,578 NZD
£700 GBP
View
A
Retailer 8
-
$1,643 NZD
ZAR 14,958 ZAR
View
A
Retailer 9
-
$1,865 NZD
$1,051 USD
View
A
Retailer 10
-
$2,226 NZD
A$1,930 AUD
View
A
Retailer 11
-
$2,310 NZD
$1,302 USD
View
Retailer 12
-
$2,715 NZD
A$2,354 AUD
View
B+
Retailer 13
-
$2,981 NZD
$1,680 USD
View
B+
Retailer 14
-
$3,129 NZD
$1,764 USD
View
B+
Retailer 15
-
$3,445 NZD
$1,942 USD
View
B+
Retailer 16
-
$3,515 NZD
£1,560 GBP
View
B+
Retailer 17
-
$3,577 NZD
$2,016 USD
View
B
Retailer 18
-
$4,294 NZD
$2,420 USD
View
Most Expensive
B
Queensmith
LG798603812 · Oct 27
$4,935 NZD
£2,190 GBP
View
18 more retailers have this diamond
Prices start from $862 NZDSave up to $4,073 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
1.50ct Cushion
$862 NZD