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Heart|Natural|IGI

1.51ct K VS1 Heart Natural Diamond

VG • K/VS1 • IGI 657456097

Shape and cutting style on the report: Heart brilliant

Certificate IGI 657456097

Diamond specifications and retailer prices

From $3,457 AUD
As of November 6, 2026
Save $3,644 AUD (51%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $8,903 AUD at NZ Jewellers · As of October 18, 2026
View at NZ Jewellers

About this 1.51ct natural heart diamond

This 1.51ct natural heart sits in the one-and-a-half to two carat band, graded K colour (faint-tinted) and VS1 clarity (very-slightly-included), with a very-good cut grade and certified by IGI 657456097. Listed at 13 retailers as of November 4, 2026, with a 105% 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

1.51
Carat
K
Colour
VS1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle38.4°
Pavilion angle36.9°
OriginNatural
Grading LabIGI
CertificateIGI 657456097
Dimensions7.10 × 8.08 × 4.48 mm
L/W Ratio1.14
Girdle conditionFaceted
Culet sizePointed
Top View
7.10 mm8.08 mm1.51 ctK / VS1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateIGI 657456097
Side View
Table 64.0%Crown 38.4°Girdle: MED-THKPavilion 36.9°Culet: NoneDepth 55.4%

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: $3,457 AUD|Low: $3,457 AUD|High: $7,264 AUD|Avg: $4,851 AUD|-2.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 1$3,457 AUD
Retailer 7$4,046 AUD
Retailer 5$4,465 AUD
Retailer 2$4,587 AUD
Retailer 6$4,628 AUD
Retailer 3$5,197 AUD
Retailer 4$7,101 AUD

44 data points across 7 retailers

13 retailers$3,457 AUD to $7,101 AUD

A
Cheapest Retailer
-
$3,457 AUD
B+
Retailer 2
-
$4,042 AUD
View
B+
Retailer 3
-
$4,046 AUD
View
Retailer 4
-
$4,259 AUD
View
Price last confirmed 19 days ago
Retailer 5
-
$4,259 AUD
View
Price last confirmed 21 days ago
Retailer 6
-
$4,422 AUD
View
Price last confirmed 21 days ago
B+
Retailer 7
-
$4,465 AUD
View
A
Retailer 8
-
$4,587 AUD
View
B+
Retailer 9
-
$4,628 AUD
View
Retailer 10
-
$4,913 AUD
View
Price last confirmed 18 days ago
B+
Retailer 11
-
$5,197 AUD
View
B+
Retailer 12
-
$7,101 AUD
View
Most Expensive
NZ Jewellers
93e22198-f024-4f31-aed8-5d4890ccae80 · Oct 18
$8,903 AUD
$6,117 USD
View
Price last confirmed 19 days ago
12 more retailers have this diamond
Prices start from $3,457 AUDSave up to $3,644 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
$3,457 AUD