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Heart|Natural|IGI

1.53ct J SI1 Heart Natural Diamond

VG • J/SI1 • IGI 499129389

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI 499129389

Diamond specifications and retailer prices

From $3,108 AUD
$2,178 USD
As of November 2, 2026
Save $2,791 AUD (47%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $5,899 AUD at MOH London · As of November 1, 2026
View at MOH London

About this 1.53ct natural heart diamond

This 1.53ct natural heart sits in the one-and-a-half to two carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI 499129389. Listed at 6 retailers as of November 1, 2026, with prices from $3,108 to $5,899, a $2,791 spread on the same certified stone. MOH London lists it at $5,899. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.53
Carat
J
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryGood
FluorescenceNone
Crown angle39.3°
Pavilion angle34.6°
OriginNatural
Grading LabIGI
CertificateIGI 499129389
Dimensions6.82 × 6.18 × 4.22 mm
L/W Ratio1.10
Girdle conditionFaceted
Culet sizePointed
Top View
6.82 mm6.18 mm1.53 ctJ / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryGood
FluorescenceNone
CertificateIGI 499129389
Side View
Table 62.0%Crown 39.3°Girdle: STK-THKPavilion 34.6°Culet: NoneDepth 68.3%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: $5,899 AUD|Low: $2,848 AUD|High: $5,971 AUD|Avg: $3,977 AUD|-0.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 2, 2026
Retailer 5$3,108 AUD
Retailer 4$3,367 AUD
Retailer 2$3,760 AUD
Retailer 6$3,888 AUD
Retailer 3$4,139 AUD
MOH London$5,899 AUD

42 data points across 6 retailers

6 retailers$3,108 AUD to $5,899 AUD

B+
Cheapest Retailer
-
$3,108 AUD
$2,178 USD
Final sale: no returns
B+
Retailer 2
-
$3,367 AUD
$2,360 USD
View
B+
Retailer 3
-
$3,760 AUD
£2,075 GBP
View
B+
Retailer 4
-
$3,888 AUD
$2,725 USD
View
B+
Retailer 5
-
$4,139 AUD
ZAR 46,859 ZAR
View
Most Expensive
B
MOH London
3B84A1CA2 · Nov 1
$5,899 AUD
£3,255 GBP
View
5 more retailers have this diamond
Prices start from $3,108 AUDSave up to $2,791 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.

B+
1.53ct Heart
$3,108 AUD