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Heart|Lab Grown|IGI

1.51ct F SI1 Heart Lab Grown Diamond

ID • F/SI1 • IGI LG826668003

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG826668003

Diamond specifications and retailer prices

From $313 AUD
As of November 6, 2026
Save $1,493 AUD (83%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $1,806 AUD at Reve Diamonds · As of November 6, 2026
View at Reve Diamonds

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 F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG826668003 or 826668003. Listed at 15 retailers as of November 6, 2026, with prices from $313 to $1,806, a $1,493 spread on the same certified stone. Reve Diamonds lists it at $1,806. 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
F
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.3°
Pavilion angle37.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG826668003
Dimensions7.91 × 7.02 × 4.67 mm
L/W Ratio1.13
Girdle conditionFaceted
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
7.91 mm7.02 mm1.51 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG826668003
Side View
Table 54.0%Crown 34.3°Girdle: MED-STKPavilion 37.5°Culet: NoneDepth 59.0%

Caratlytics Score

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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: $710 AUD|Low: $293 AUD|High: $2,431 AUD|Avg: $882 AUD|+4.9%
Retailer 1
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
Reve Diamonds
November 6, 2026
Retailer 13$313 AUD
Retailer 10$362 AUD
Retailer 6$378 AUD
Retailer 4$387 AUD
Retailer 14$410 AUD
Retailer 2$665 AUD
Retailer 12$681 AUD
Retailer 1$710 AUD
Retailer 5$792 AUD
Retailer 9$1,041 AUD
Retailer 11$1,247 AUD
Retailer 3$1,323 AUD
Retailer 8$1,550 AUD
Retailer 7$1,659 AUD
Reve Diamonds$1,806 AUD

44 data points across 15 retailers

15 retailers$313 AUD to $1,806 AUD

A
Cheapest Retailer
-
$313 AUD
A
Retailer 2
-
$362 AUD
View
Retailer 3
-
$378 AUD
View
Price last confirmed 13 days ago
A
Retailer 4
-
$387 AUD
View
A
Retailer 5
-
$410 AUD
View
Final sale: no returns
A
Retailer 6
-
$665 AUD
View
B+
Retailer 7
-
$681 AUD
View
B+
Retailer 8
-
$710 AUD
View
B+
Retailer 9
-
$792 AUD
View
B+
Retailer 10
-
$1,041 AUD
View
B
Retailer 11
-
$1,247 AUD
View
B
Retailer 12
-
$1,323 AUD
View
B
Retailer 13
-
$1,550 AUD
View
B
Retailer 14
-
$1,659 AUD
View
Most Expensive
B
Reve Diamonds
2D5823DE9 · Nov 6
$1,806 AUD
$1,241 USD
View
14 more retailers have this diamond
Prices start from $313 AUDSave up to $1,493 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
$313 AUD