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Cushion|Lab Grown|IGI

1.51ct E IF Cushion Lab Grown Diamond

ID • E/IF • IGI LG816683635

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG816683635

Diamond specifications and retailer prices

From $702 NZD
$395 USD
As of November 1, 2026
Save $3,635 NZD (84%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $4,337 NZD at Brilliant Earth · As of November 2, 2026
View at Brilliant Earth

About this 1.51ct lab-grown cushion diamond

This 1.51ct 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 LG816683635 or 816683635. Listed at 20 retailers as of November 1, 2026, with prices from $702 to $4,337, a $3,635 spread on the same certified stone. Brilliant Earth lists it at $4,337. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.51
Carat
E
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.7°
Pavilion angle33.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG816683635
Dimensions8.09 × 5.81 × 3.84 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
8.09 mm5.81 mm1.51 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG816683635
Side View
Table 57.0%Crown 32.7°Girdle: STK-THKPavilion 33.9°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: Nov 1
Current: $4,337 NZD|Low: $702 NZD|High: $6,185 NZD|Avg: $2,114 NZD|-29.9%
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
Retailer 18
Retailer 19
Retailer 20
November 2, 2026
Retailer 6$702 NZD
Retailer 7$778 NZD
Retailer 13$801 NZD
Retailer 18$1,049 NZD
Retailer 12$1,217 NZD
Retailer 9$1,230 NZD
Retailer 16$1,235 NZD
Retailer 14$1,341 NZD
Retailer 15$1,400 NZD
Retailer 19$1,806 NZD
Retailer 8$1,838 NZD
Retailer 2$1,955 NZD
Retailer 10$2,574 NZD
Retailer 17$2,746 NZD
Retailer 11$2,758 NZD
Retailer 4$2,883 NZD
Retailer 3$2,989 NZD
Retailer 5$3,056 NZD
Retailer 20$4,159 NZD
Brilliant Earth$4,337 NZD

36 data points across 20 retailers

20 retailers$702 NZD to $4,337 NZD

A
Cheapest Retailer
-
$702 NZD
$395 USD
Final sale: no returns
Retailer 2
-
$778 NZD
$438 USD
View
Price last confirmed 8 days ago
A
Retailer 3
-
$801 NZD
£355 GBP
View
A
Retailer 4
-
$1,049 NZD
$590 USD
View
A
Retailer 5
-
$1,217 NZD
$685 USD
View
A
Retailer 6
-
$1,230 NZD
$692 USD
View
A
Retailer 7
-
$1,235 NZD
€662 EUR
View
A
Retailer 8
-
$1,341 NZD
ZAR 12,192 ZAR
View
A
Retailer 9
-
$1,400 NZD
£620 GBP
View
A
Retailer 10
-
$1,806 NZD
A$1,563 AUD
View
A
Retailer 11
-
$1,838 NZD
$1,034 USD
View
Retailer 12
-
$1,955 NZD
$1,100 USD
View
A
Retailer 13
-
$2,574 NZD
$1,448 USD
View
B+
Retailer 14
-
$2,746 NZD
$1,545 USD
View
Retailer 15
-
$2,758 NZD
A$2,387 AUD
View
Price last confirmed 25 days ago
B+
Retailer 16
-
$2,883 NZD
SGD 2,192 SGD
View
B+
Retailer 17
-
$2,989 NZD
$1,682 USD
View
B+
Retailer 18
-
$3,056 NZD
£1,354 GBP
View
Retailer 19
-
$4,159 NZD
$2,340 USD
View
Price last confirmed 12 days ago
Most Expensive
B+
Brilliant Earth
22183635A · Nov 2
$4,337 NZD
$2,440 USD
View
19 more retailers have this diamond
Prices start from $702 NZDSave up to $3,635 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
1.51ct Cushion
$702 NZD