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Heart|Lab Grown|IGI

1.59ct F SI1 Heart Lab Grown Diamond

ID • F/SI1 • IGI LG825687255

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG825687255

Diamond specifications and retailer prices

From $342 AUD
As of November 6, 2026
Save $1,303 AUD (79%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $1,645 AUD at Brilliant Earth · As of November 6, 2026
View at Brilliant Earth

About this 1.59ct lab-grown heart diamond

This 1.59ct 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 LG825687255 or 825687255. Listed at 14 retailers as of November 6, 2026, with prices from $342 to $1,645, a $1,303 spread on the same certified stone. Brilliant Earth lists it at $1,645. 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

1.59
Carat
F
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle30.6°
Pavilion angle41.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG825687255
Dimensions8.27 × 6.94 × 4.89 mm
L/W Ratio1.19
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.27 mm6.94 mm1.59 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG825687255
Side View
Table 67.0%Crown 30.6°Girdle: MED-STKPavilion 41.4°Culet: NoneDepth 59.1%

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: $1,645 AUD|Low: $297 AUD|High: $2,562 AUD|Avg: $874 AUD|-35.8%
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 7, 2026
Retailer 13$310 AUD
Retailer 7$342 AUD
Retailer 12$359 AUD
Retailer 5$384 AUD
Retailer 6$483 AUD
Retailer 8$652 AUD
Retailer 2$694 AUD
Retailer 4$760 AUD
Retailer 9$998 AUD
Retailer 3$1,234 AUD
Retailer 10$1,234 AUD
Retailer 11$1,541 AUD
Brilliant Earth$1,645 AUD

42 data points across 13 retailers

14 retailers$342 AUD to $1,645 AUD

Retailer 1
-
$310 AUD
Price last confirmed 15 days ago
A
Retailer 2
-
$342 AUD
View
Final sale: no returns
Retailer 3
-
$359 AUD
View
Price last confirmed 14 days ago
Retailer 4
-
$384 AUD
View
Price last confirmed 13 days ago
A
Retailer 5
-
$428 AUD
View
A
Retailer 6
-
$483 AUD
View
B+
Retailer 7
-
$652 AUD
View
A
Retailer 8
-
$694 AUD
View
Retailer 9
-
$760 AUD
View
Price last confirmed 8 days ago
B
Retailer 10
-
$998 AUD
View
Retailer 11
-
$1,234 AUD
View
Price last confirmed 13 days ago
B
Retailer 12
-
$1,234 AUD
View
Retailer 13
-
$1,541 AUD
View
Price last confirmed 13 days ago
Most Expensive
B
Brilliant Earth
20868368A · Nov 6
$1,645 AUD
$1,130 USD
View
13 more retailers have this diamond
Prices start from $342 AUDSave up to $1,303 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
1.59ct Heart
$342 AUD