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Heart|Lab Grown|IGI

1.57ct D IF Heart Lab Grown Diamond

ID • D/IF • IGI LG618401799

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG618401799

Diamond specifications and retailer prices

From $1,526 NZD
$860 USD
As of October 30, 2026
Save $6,600 NZD (81%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $8,126 NZD at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 1.57ct lab-grown heart diamond

This 1.57ct lab-grown heart sits in the one-and-a-half to two carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG618401799 or 618401799. Listed at 22 retailers as of October 30, 2026, with prices from $1,526 to $8,126, a $6,600 spread on the same certified stone. Brilliant Earth lists it at $8,126. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.57
Carat
D
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.9°
Pavilion angle39.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG618401799
Dimensions7.38 × 8.05 × 4.60 mm
L/W Ratio1.09
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
7.38 mm8.05 mm1.57 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG618401799
Side View
Table 61.0%Crown 37.9°Girdle: MED-STKPavilion 39.1°Culet: NoneDepth 57.1%

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: Oct 30
Current: $8,126 NZD|Low: $1,499 NZD|High: $8,144 NZD|Avg: $3,779 NZD|-0.2%
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
November 2, 2026
Retailer 8$1,526 NZD
Retailer 4$1,661 NZD
Retailer 17$1,771 NZD
Retailer 14$1,829 NZD
Retailer 5$2,085 NZD
Retailer 18$2,182 NZD
Retailer 6$2,259 NZD
Retailer 11$2,534 NZD
Retailer 2$2,721 NZD
Retailer 13$3,173 NZD
Retailer 19$3,254 NZD
Retailer 15$3,710 NZD
Retailer 12$4,407 NZD
Retailer 3$4,977 NZD
Retailer 7$5,538 NZD
Retailer 10$6,139 NZD
Retailer 16$6,352 NZD
Retailer 9$6,643 NZD
Brilliant Earth$8,126 NZD

34 data points across 19 retailers

22 retailers$1,526 NZD to $8,126 NZD

A
Cheapest Retailer
-
$1,526 NZD
$860 USD
A
Retailer 2
-
$1,661 NZD
$936 USD
View
A
Retailer 3
-
$1,771 NZD
$998 USD
View
Retailer 4
-
$1,812 NZD
$1,021 USD
View
Price last confirmed 15 days ago
A
Retailer 5
-
$1,829 NZD
$1,031 USD
View
Final sale: no returns
B+
Retailer 6
-
$2,085 NZD
$1,175 USD
View
B+
Retailer 7
-
$2,182 NZD
$1,230 USD
View
B+
Retailer 8
-
$2,259 NZD
$1,273 USD
View
B+
Retailer 9
-
$2,534 NZD
$1,428 USD
View
B+
Retailer 10
-
$2,721 NZD
£1,208 GBP
View
B+
Retailer 11
-
$3,173 NZD
€1,703 EUR
View
B+
Retailer 12
-
$3,254 NZD
ZAR 29,624 ZAR
View
B+
Retailer 13
-
$3,710 NZD
$2,091 USD
View
Retailer 14
-
$4,391 NZD
A$3,807 AUD
View
Price last confirmed 157 days ago
B+
Retailer 15
-
$4,407 NZD
A$3,821 AUD
View
B
Retailer 16
-
$4,977 NZD
$2,805 USD
View
B
Retailer 17
-
$5,241 NZD
$2,954 USD
View
B
Retailer 18
-
$5,538 NZD
$3,121 USD
View
B
Retailer 19
-
$6,139 NZD
$3,460 USD
View
B
Retailer 20
-
$6,352 NZD
$3,580 USD
View
B
Retailer 21
-
$6,643 NZD
£2,948 GBP
View
Most Expensive
B
Brilliant Earth
11243115A · Oct 31
$8,126 NZD
$4,580 USD
View
21 more retailers have this diamond
Prices start from $1,526 NZDSave up to $6,600 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 Heart
$1,526 NZD