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Heart|Natural|IGI

1.51ct G SI1 Heart Natural Diamond

VG • G/SI1 • IGI 801639168

Shape and cutting style on the report: Heart brilliant

Certificate IGI 801639168

Diamond specifications and retailer prices

From $4,207 SGD
As of November 5, 2026
Save $4,050 SGD (49%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $8,257 SGD at NZ Jewellers · As of November 5, 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 G colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI 801639168. Listed at 15 retailers as of November 5, 2026, with prices from $4,207 to $8,257, a $4,050 spread on the same certified stone. NZ Jewellers lists it at $8,257. 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
G
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle36.5°
Pavilion angle41.3°
OriginNatural
Grading LabIGI
CertificateIGI 801639168
Dimensions7.04 × 7.68 × 4.70 mm
L/W Ratio1.09
Girdle conditionFaceted
Top View
7.04 mm7.68 mm1.51 ctG / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateIGI 801639168
Side View
Table 61.0%Crown 36.5°Girdle: STK-THKPavilion 41.3°Culet: NoneDepth 61.2%

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 5
Current: $8,257 SGD|Low: $4,207 SGD|High: $8,600 SGD|Avg: $5,340 SGD|-4.0%
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
Retailer 15
November 6, 2026
Retailer 13$4,207 SGD
Retailer 15$4,374 SGD
Retailer 5$4,383 SGD
Retailer 2$4,442 SGD
Retailer 7$4,465 SGD
Retailer 12$4,739 SGD
Retailer 3$4,923 SGD
Retailer 9$4,926 SGD
Retailer 6$4,935 SGD
Retailer 10$4,994 SGD
Retailer 4$5,469 SGD
Retailer 8$5,519 SGD
Retailer 11$5,785 SGD
Retailer 14$7,905 SGD
NZ Jewellers$8,257 SGD

18 data points across 15 retailers

15 retailers$4,207 SGD to $8,257 SGD

A
Cheapest Retailer
-
$4,207 SGD
A
Retailer 2
-
$4,374 SGD
View
Final sale: no returns
A
Retailer 3
-
$4,383 SGD
View
A
Retailer 4
-
$4,442 SGD
View
A
Retailer 5
-
$4,465 SGD
View
A
Retailer 6
-
$4,739 SGD
View
A
Retailer 7
-
$4,923 SGD
View
A
Retailer 8
-
$4,926 SGD
View
Retailer 9
-
$4,935 SGD
View
Price last confirmed 9 days ago
A
Retailer 10
-
$4,994 SGD
View
A
Retailer 11
-
$5,469 SGD
View
A
Retailer 12
-
$5,519 SGD
View
A
Retailer 13
-
$5,785 SGD
View
B+
Retailer 14
-
$7,905 SGD
View
Most Expensive
B
NZ Jewellers
486ccb40-1214-460a-8f96-964fb2254931 · Nov 5
$8,257 SGD
$6,443 USD
View
14 more retailers have this diamond
Prices start from $4,207 SGDSave up to $4,050 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
$4,207 SGD