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Heart|Natural|IGI

1.50ct K SI1 Heart Natural Diamond

VG • K/SI1 • IGI 681559672

Shape and cutting style on the report: Heart brilliant

Certificate IGI 681559672

Diamond specifications and retailer prices

From $2,199 AUD
As of November 5, 2026
Save $2,821 AUD (56%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $6,386 AUD at NZ Jewellers · As of September 20, 2026
View at NZ Jewellers

About this 1.5ct natural heart diamond

This 1.5ct natural heart sits in the one-and-a-half to two carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI 681559672. Listed at 15 retailers as of November 4, 2026, with a 128% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.50
Carat
K
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39.3°
Pavilion angle35.8°
OriginNatural
Grading LabIGI
CertificateIGI 681559672
Dimensions6.88 × 7.88 × 4.54 mm
L/W Ratio1.15
Girdle conditionFaceted
Culet sizePointed
Top View
6.88 mm7.88 mm1.50 ctK / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 681559672
Side View
Table 60.0%Crown 39.3°Girdle: STK-VTKPavilion 35.8°Culet: NoneDepth 57.6%

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 5
Current: $2,647 AUD|Low: $2,199 AUD|High: $5,200 AUD|Avg: $3,392 AUD|-39.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 8$2,199 AUD
Retailer 1$2,647 AUD
Retailer 3$2,802 AUD
Retailer 7$2,857 AUD
Retailer 12$2,880 AUD
Retailer 11$2,896 AUD
Retailer 4$2,901 AUD
Retailer 2$3,020 AUD
Retailer 9$3,506 AUD
Retailer 5$4,183 AUD
Retailer 6$4,844 AUD
Retailer 10$5,020 AUD

23 data points across 12 retailers

15 retailers$2,199 AUD to $5,020 AUD

A
Cheapest Retailer
-
$2,199 AUD
B+
Retailer 2
-
$2,647 AUD
View
A
Retailer 3
-
$2,802 AUD
View
A
Retailer 4
-
$2,857 AUD
View
A
Retailer 5
-
$2,880 AUD
View
B+
Retailer 6
-
$2,896 AUD
View
Retailer 7
-
$2,901 AUD
View
Price last confirmed 8 days ago
A
Retailer 8
-
$3,020 AUD
View
Retailer 9
-
$3,055 AUD
View
Price last confirmed 45 days ago
B+
Retailer 10
-
$3,100 AUD
View
B+
Retailer 11
-
$3,506 AUD
View
B+
Retailer 12
-
$4,183 AUD
View
B+
Retailer 13
-
$4,844 AUD
View
B+
Retailer 14
-
$5,020 AUD
View
Most Expensive
NZ Jewellers
894ea465-fda4-48ff-a268-5fac68c966c3 · Sep 20
$6,386 AUD
$4,388 USD
View
Price last confirmed 46 days ago
14 more retailers have this diamond
Prices start from $2,199 AUDSave up to $2,821 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
1.50ct Heart
$2,199 AUD