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Cushion|Lab Grown|IGI

1.57ct E IF Cushion Lab Grown Diamond

EX • E/IF • IGI LG618401771

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG618401771

Diamond specifications and retailer prices

From $1,278 NZD
$719 USD
As of November 1, 2026
Save $5,174 NZD (80%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $6,452 NZD at Brilliant Earth · As of November 2, 2026
View at Brilliant Earth

About this 1.57ct lab-grown cushion diamond

This 1.57ct 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 LG618401771 or 618401771. Listed at 16 retailers as of November 1, 2026, with prices from $1,278 to $6,452, a $5,174 spread on the same certified stone. Brilliant Earth lists it at $6,452. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.57
Carat
E
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle35.8°
Pavilion angle38.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG618401771
Dimensions7.86 × 6.27 × 4.21 mm
L/W Ratio1.25
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
7.86 mm6.27 mm1.57 ctE / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG618401771
Side View
Table 60.0%Crown 35.8°Girdle: MED-STKPavilion 38.3°Culet: NoneDepth 67.1%

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: $6,452 NZD|Low: $1,214 NZD|High: $6,452 NZD|Avg: $2,705 NZD
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 2, 2026
Retailer 10$1,278 NZD
Retailer 3$1,344 NZD
Retailer 12$1,398 NZD
Retailer 8$1,546 NZD
Retailer 4$1,719 NZD
Retailer 7$2,036 NZD
Retailer 5$2,104 NZD
Retailer 2$2,310 NZD
Retailer 9$2,913 NZD
Retailer 11$4,072 NZD
Retailer 6$5,835 NZD
Brilliant Earth$6,452 NZD

41 data points across 12 retailers

16 retailers$1,278 NZD to $6,452 NZD

A
Cheapest Retailer
-
$1,278 NZD
$719 USD
Final sale: no returns
Retailer 2
-
$1,344 NZD
$756 USD
View
Price last confirmed 17 days ago
A
Retailer 3
-
$1,546 NZD
$870 USD
View
A
Retailer 4
-
$1,719 NZD
$967 USD
View
A
Retailer 5
-
$1,799 NZD
$1,012 USD
View
A
Retailer 6
-
$2,036 NZD
€1,091 EUR
View
A
Retailer 7
-
$2,104 NZD
£932 GBP
View
A
Retailer 8
-
$2,126 NZD
$1,196 USD
View
A
Retailer 9
-
$2,310 NZD
ZAR 20,996 ZAR
View
B+
Retailer 10
-
$2,913 NZD
$1,639 USD
View
B+
Retailer 11
-
$3,900 NZD
£1,728 GBP
View
B+
Retailer 12
-
$4,072 NZD
$2,291 USD
View
B
Retailer 13
-
$4,344 NZD
$2,444 USD
View
B
Retailer 14
-
$4,443 NZD
$2,500 USD
View
B
Retailer 15
-
$5,835 NZD
£2,585 GBP
View
Most Expensive
B
Brilliant Earth
12221907A · Nov 2
$6,452 NZD
$3,630 USD
View
15 more retailers have this diamond
Prices start from $1,278 NZDSave up to $5,174 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
1.57ct Cushion
$1,278 NZD