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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 $1,224 AUD
$860 USD
As of October 30, 2026
Save $5,296 AUD (81%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $6,520 AUD 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 $1,224 to $6,520, a $5,296 spread on the same certified stone. Brilliant Earth lists it at $6,520. 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: $6,520 AUD|Low: $1,203 AUD|High: $6,534 AUD|Avg: $3,032 AUD|-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$1,224 AUD
Retailer 4$1,332 AUD
Retailer 17$1,421 AUD
Retailer 14$1,468 AUD
Retailer 5$1,673 AUD
Retailer 18$1,751 AUD
Retailer 6$1,812 AUD
Retailer 11$2,033 AUD
Retailer 2$2,183 AUD
Retailer 13$2,546 AUD
Retailer 19$2,610 AUD
Retailer 15$2,977 AUD
Retailer 12$3,536 AUD
Retailer 3$3,993 AUD
Retailer 7$4,443 AUD
Retailer 10$4,925 AUD
Retailer 16$5,096 AUD
Retailer 9$5,330 AUD
Brilliant Earth$6,520 AUD

34 data points across 19 retailers

22 retailers$1,224 AUD to $6,520 AUD

A
Cheapest Retailer
-
$1,224 AUD
$860 USD
A
Retailer 2
-
$1,332 AUD
$936 USD
View
A
Retailer 3
-
$1,421 AUD
$998 USD
View
Retailer 4
-
$1,453 AUD
$1,021 USD
View
Price last confirmed 16 days ago
A
Retailer 5
-
$1,468 AUD
$1,031 USD
View
Final sale: no returns
B+
Retailer 6
-
$1,673 AUD
$1,175 USD
View
B+
Retailer 7
-
$1,751 AUD
$1,230 USD
View
B+
Retailer 8
-
$1,812 AUD
$1,273 USD
View
B+
Retailer 9
-
$2,033 AUD
$1,428 USD
View
B+
Retailer 10
-
$2,183 AUD
£1,208 GBP
View
B+
Retailer 11
-
$2,546 AUD
€1,703 EUR
View
B+
Retailer 12
-
$2,610 AUD
ZAR 29,624 ZAR
View
B+
Retailer 13
-
$2,977 AUD
$2,091 USD
View
Retailer 14
-
$3,523 AUD
View
Price last confirmed 157 days ago
B+
Retailer 15
-
$3,536 AUD
View
B
Retailer 16
-
$3,993 AUD
$2,805 USD
View
B
Retailer 17
-
$4,205 AUD
$2,954 USD
View
B
Retailer 18
-
$4,443 AUD
$3,121 USD
View
B
Retailer 19
-
$4,925 AUD
$3,460 USD
View
B
Retailer 20
-
$5,096 AUD
$3,580 USD
View
B
Retailer 21
-
$5,330 AUD
£2,948 GBP
View
Most Expensive
B
Brilliant Earth
11243115A · Oct 31
$6,520 AUD
$4,580 USD
View
21 more retailers have this diamond
Prices start from $1,224 AUDSave up to $5,296 AUD

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
$1,224 AUD