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Heart|Lab Grown|IGI

2.57ct D SI1 Heart Lab Grown Diamond

EX • D/SI1 • IGI LG668469150

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG668469150

Diamond specifications and retailer prices

From $547 AUD
As of November 4, 2026
Save $3,455 AUD (86%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $4,002 AUD at Brilliant Earth · As of November 4, 2026
View at Brilliant Earth

About this 2.57ct lab-grown heart diamond

This 2.57ct lab-grown heart sits in the two to three carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG668469150 or 668469150. Listed at 14 retailers as of November 4, 2026, with prices from $547 to $4,002, a $3,455 spread on the same certified stone. Brilliant Earth lists it at $4,002. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

2.57
Carat
D
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.5°
Pavilion angle39°
OriginLab Grown
Grading LabIGI
CertificateIGI LG668469150
Dimensions8.32 × 9.59 × 5.59 mm
L/W Ratio1.15
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.32 mm9.59 mm2.57 ctD / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG668469150
Side View
Table 57.0%Crown 33.5°Girdle: MED-STKPavilion 39°Culet: NoneDepth 58.3%

Caratlytics Score

How it works →
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: Nov 4
Current: $4,002 AUD|Low: $547 AUD|High: $5,894 AUD|Avg: $1,730 AUD|-32.1%
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
November 5, 2026
Retailer 7$547 AUD
Retailer 8$613 AUD
Retailer 11$678 AUD
Retailer 13$834 AUD
Retailer 10$895 AUD
Retailer 5$1,083 AUD
Retailer 3$1,207 AUD
Retailer 2$1,214 AUD
Retailer 4$1,461 AUD
Retailer 12$1,904 AUD
Retailer 9$2,182 AUD
Retailer 6$2,644 AUD
Brilliant Earth$4,002 AUD

34 data points across 13 retailers

14 retailers$547 AUD to $4,002 AUD

A
Cheapest Retailer
-
$547 AUD
Retailer 2
-
$589 AUD
View
Price last confirmed 40 days ago
A
Retailer 3
-
$613 AUD
View
Retailer 4
-
$678 AUD
View
Price last confirmed 25 days ago
Retailer 5
-
$678 AUD
View
Price last confirmed 12 days ago
A
Retailer 6
-
$895 AUD
View
B+
Retailer 7
-
$1,083 AUD
View
B+
Retailer 8
-
$1,207 AUD
View
B+
Retailer 9
-
$1,214 AUD
View
B+
Retailer 10
-
$1,461 AUD
View
B
Retailer 11
-
$1,904 AUD
View
B
Retailer 12
-
$2,182 AUD
View
B
Retailer 13
-
$2,644 AUD
View
Most Expensive
B
Brilliant Earth
12460210A · Nov 4
$4,002 AUD
$2,750 USD
View
13 more retailers have this diamond
Prices start from $547 AUDSave up to $3,455 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
2.57ct Heart
$547 AUD