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Heart|Lab Grown|IGI

1.51ct D SI1 Heart Lab Grown Diamond

ID • D/SI1 • IGI LG700570324

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG700570324

Diamond specifications and retailer prices

From $297 AUD
As of November 6, 2026
Save $1,508 AUD (84%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $1,805 AUD at Brilliant Earth · As of November 6, 2026
View at Brilliant Earth

About this 1.51ct lab-grown heart diamond

This 1.51ct lab-grown heart sits in the one-and-a-half to two carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG700570324 or 700570324. Listed at 15 retailers as of November 6, 2026, with prices from $297 to $1,805, a $1,508 spread on the same certified stone. Brilliant Earth lists it at $1,805. 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

1.51
Carat
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.8°
Pavilion angle41.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG700570324
Dimensions7.24 × 7.66 × 4.65 mm
L/W Ratio1.06
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.24 mm7.66 mm1.51 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG700570324
Side View
Table 58.0%Crown 36.8°Girdle: MED-STKPavilion 41.9°Culet: NoneDepth 60.7%

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 6
Current: $1,805 AUD|Low: $297 AUD|High: $1,805 AUD|Avg: $778 AUD
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
November 6, 2026
Retailer 14$297 AUD
Retailer 11$343 AUD
Retailer 7$346 AUD
Retailer 4$367 AUD
Retailer 6$384 AUD
Retailer 15$495 AUD
Retailer 2$619 AUD
Retailer 8$668 AUD
Retailer 3$719 AUD
Retailer 12$821 AUD
Retailer 13$848 AUD
Retailer 10$961 AUD
Retailer 5$1,180 AUD
Retailer 9$1,713 AUD
Brilliant Earth$1,805 AUD

46 data points across 15 retailers

15 retailers$297 AUD to $1,805 AUD

A
Cheapest Retailer
-
$297 AUD
A
Retailer 2
-
$343 AUD
View
A
Retailer 3
-
$346 AUD
View
Final sale: no returns
A
Retailer 4
-
$367 AUD
View
Retailer 5
-
$384 AUD
View
Price last confirmed 12 days ago
B+
Retailer 6
-
$495 AUD
View
A
Retailer 7
-
$619 AUD
View
A
Retailer 8
-
$668 AUD
View
B+
Retailer 9
-
$719 AUD
View
B+
Retailer 10
-
$821 AUD
View
B+
Retailer 11
-
$848 AUD
View
B+
Retailer 12
-
$961 AUD
View
B
Retailer 13
-
$1,180 AUD
View
B
Retailer 14
-
$1,713 AUD
View
Most Expensive
B
Brilliant Earth
13883714A · Nov 6
$1,805 AUD
$1,240 USD
View
14 more retailers have this diamond
Prices start from $297 AUDSave up to $1,508 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
1.51ct Heart
$297 AUD