CaratHunter
Plans
Heart|Natural|IGI

1.51ct K SI1 Heart Natural Diamond

VG • K/SI1 • IGI 803629052

Shape and cutting style on the report: Heart brilliant

Certificate IGI 803629052

Diamond specifications and retailer prices

From $2,749 SGD
As of November 6, 2026
Save $2,647 SGD (49%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $6,654 SGD at NZ Jewellers · As of September 30, 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 SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI 803629052. Listed at 14 retailers as of November 4, 2026, with a 96% 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
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.2°
Pavilion angle42.8°
OriginNatural
Grading LabIGI
CertificateIGI 803629052
Dimensions6.71 × 7.91 × 4.92 mm
L/W Ratio1.18
Girdle conditionFaceted
Top View
6.71 mm7.91 mm1.51 ctK / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 803629052
Side View
Table 60.0%Crown 37.2°Girdle: MED-THKPavilion 42.8°Culet: NoneDepth 62.2%

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: $2,749 SGD|Low: $2,749 SGD|High: $5,644 SGD|Avg: $3,515 SGD|-4.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 1$2,749 SGD
Retailer 6$2,794 SGD
Retailer 7$3,028 SGD
Retailer 9$3,183 SGD
Retailer 2$3,221 SGD
Retailer 8$3,249 SGD
Retailer 3$3,276 SGD
Retailer 4$3,769 SGD
Retailer 5$5,396 SGD

43 data points across 9 retailers

14 retailers$2,749 SGD to $5,396 SGD

A
Cheapest Retailer
-
$2,749 SGD
A
Retailer 2
-
$2,794 SGD
View
B+
Retailer 3
-
$3,028 SGD
View
Retailer 4
-
$3,183 SGD
View
Price last confirmed 36 days ago
Retailer 5
-
$3,183 SGD
View
Price last confirmed 21 days ago
B+
Retailer 6
-
$3,221 SGD
View
B+
Retailer 7
-
$3,249 SGD
View
A
Retailer 8
-
$3,276 SGD
View
Retailer 9
-
$3,330 SGD
View
Price last confirmed 36 days ago
Retailer 10
-
$3,673 SGD
View
Price last confirmed 61 days ago
Retailer 11
-
$3,673 SGD
View
Price last confirmed 38 days ago
B+
Retailer 12
-
$3,769 SGD
View
B
Retailer 13
-
$5,396 SGD
View
Most Expensive
NZ Jewellers
bebea34d-aa10-4dfc-9a6a-812814e66304 · Sep 30
$6,654 SGD
$5,192 USD
View
Price last confirmed 37 days ago
13 more retailers have this diamond
Prices start from $2,749 SGDSave up to $2,647 SGD

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
$2,749 SGD