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Heart|Lab Grown|IGI

1.31ct H SI1 Heart Lab Grown Diamond

ID • H/SI1 • IGI LG522254244

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG522254244

Diamond specifications and retailer prices

From $429 AUD
As of November 6, 2026
Save $1,749 AUD (80%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $2,178 AUD at Reve Diamonds · As of November 6, 2026
View at Reve Diamonds

About this 1.31ct lab-grown heart diamond

This 1.31ct lab-grown heart sits in the one-and-a-quarter to one-and-a-half carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG522254244 or 522254244. Listed at 16 retailers as of November 6, 2026, with prices from $429 to $2,178, a $1,749 spread on the same certified stone. Reve Diamonds lists it at $2,178. 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

1.31
Carat
H
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle31.5°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG522254244
Dimensions7.92 × 7.08 × 4.21 mm
L/W Ratio1.12
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
7.92 mm7.08 mm1.31 ctH / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG522254244
Side View
Table 59.5%Crown 31.5°Girdle: STK-THKPavilion 41°Culet: NoneDepth 53.2%

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: Nov 6
Current: $2,126 AUD|Low: $412 AUD|High: $3,001 AUD|Avg: $1,258 AUD|-1.5%
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
Retailer 15
Reve Diamonds
November 5, 2026
Retailer 11$429 AUD
Retailer 5$480 AUD
Retailer 15$498 AUD
Retailer 2$533 AUD
Retailer 12$533 AUD
Retailer 3$696 AUD
Retailer 9$757 AUD
Retailer 14$872 AUD
Retailer 4$898 AUD
Retailer 8$1,266 AUD
Retailer 10$1,636 AUD
Retailer 13$1,712 AUD
Retailer 6$1,781 AUD
Retailer 1$2,126 AUD
Reve Diamonds$2,178 AUD
Retailer 7$3,001 AUD

26 data points across 16 retailers

16 retailers$429 AUD to $2,178 AUD

A
Cheapest Retailer
-
$429 AUD
B+
Retailer 2
-
$480 AUD
View
Final sale: no returns
B+
Retailer 3
-
$498 AUD
View
B+
Retailer 4
-
$533 AUD
View
Retailer 5
-
$533 AUD
View
Price last confirmed 12 days ago
B+
Retailer 6
-
$696 AUD
View
B+
Retailer 7
-
$757 AUD
View
B+
Retailer 8
-
$872 AUD
View
B+
Retailer 9
-
$898 AUD
View
B+
Retailer 10
-
$913 AUD
View
B+
Retailer 11
-
$1,266 AUD
View
B+
Retailer 12
-
$1,636 AUD
View
B+
Retailer 13
-
$1,712 AUD
View
B+
Retailer 14
-
$1,781 AUD
View
B+
Retailer 15
-
$2,126 AUD
View
Most Expensive
B
Reve Diamonds
CAC247731 · Nov 6
$2,178 AUD
$1,497 USD
View
15 more retailers have this diamond
Prices start from $429 AUDSave up to $1,749 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
1.31ct Heart
$429 AUD