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Heart|Natural|IGI

1.51ct I SI1 Heart Natural Diamond

VG • I/SI1 • IGI 790611321

Shape and cutting style on the report: Heart brilliant

Certificate IGI 790611321

Diamond specifications and retailer prices

From $3,105 SGD
As of November 6, 2026
Save $4,083 SGD (57%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $7,188 SGD at NZ Jewellers · As of November 3, 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 I colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI 790611321. Listed at 16 retailers as of November 3, 2026, with prices from $3,105 to $7,188, a $4,083 spread on the same certified stone. NZ Jewellers lists it at $7,188. 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
I
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceStrong
Crown angle40.6°
Pavilion angle36.7°
OriginNatural
Grading LabIGI
CertificateIGI 790611321
Dimensions8.01 × 7.17 × 4.45 mm
L/W Ratio1.12
Girdle conditionFaceted
Top View
8.01 mm7.17 mm1.51 ctI / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceStrong
CertificateIGI 790611321
Side View
Table 60.0%Crown 40.6°Girdle: THN-STKPavilion 36.7°Culet: NoneDepth 55.6%

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 6
Current: $7,188 SGD|Low: $3,105 SGD|High: $7,295 SGD|Avg: $4,667 SGD|-1.5%
NZ Jewellers
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
November 6, 2026
Retailer 8$3,105 SGD
Retailer 11$3,567 SGD
Retailer 2$3,767 SGD
Retailer 5$3,819 SGD
Retailer 12$3,911 SGD
Retailer 14$3,979 SGD
Retailer 9$3,993 SGD
Retailer 3$4,125 SGD
Retailer 6$4,143 SGD
Retailer 4$4,287 SGD
Retailer 10$5,029 SGD
Retailer 7$6,053 SGD
Retailer 13$6,871 SGD
NZ Jewellers$7,188 SGD

21 data points across 14 retailers

16 retailers$3,105 SGD to $7,188 SGD

A
Cheapest Retailer
-
$3,105 SGD
A
Retailer 2
-
$3,567 SGD
View
B+
Retailer 3
-
$3,767 SGD
View
B+
Retailer 4
-
$3,819 SGD
View
A
Retailer 5
-
$3,911 SGD
View
B+
Retailer 6
-
$3,979 SGD
View
A
Retailer 7
-
$3,993 SGD
View
B+
Retailer 8
-
$4,104 SGD
View
Final sale: no returns
A
Retailer 9
-
$4,125 SGD
View
Retailer 10
-
$4,143 SGD
View
Price last confirmed 9 days ago
B+
Retailer 11
-
$4,205 SGD
View
B+
Retailer 12
-
$4,287 SGD
View
B+
Retailer 13
-
$5,029 SGD
View
B+
Retailer 14
-
$6,053 SGD
View
B
Retailer 15
-
$6,871 SGD
View
Most Expensive
B
NZ Jewellers
bd3e929c-69a8-4605-b02c-91a5173c0542 · Nov 3
$7,188 SGD
$5,609 USD
View
15 more retailers have this diamond
Prices start from $3,105 SGDSave up to $4,083 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
$3,105 SGD