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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 $5,922 NZD
As of November 5, 2026
Save $5,700 NZD (49%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $11,623 NZD 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 $5,922 to $11,623, a $5,700 spread on the same certified stone. NZ Jewellers lists it at $11,623. 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: $11,623 NZD|Low: $5,922 NZD|High: $12,104 NZD|Avg: $7,516 NZD|-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$5,922 NZD
Retailer 15$6,157 NZD
Retailer 5$6,169 NZD
Retailer 2$6,252 NZD
Retailer 7$6,285 NZD
Retailer 12$6,671 NZD
Retailer 3$6,929 NZD
Retailer 9$6,934 NZD
Retailer 6$6,947 NZD
Retailer 10$7,030 NZD
Retailer 4$7,697 NZD
Retailer 8$7,768 NZD
Retailer 11$8,143 NZD
Retailer 14$11,126 NZD
NZ Jewellers$11,623 NZD

18 data points across 15 retailers

15 retailers$5,922 NZD to $11,623 NZD

A
Cheapest Retailer
-
$5,922 NZD
A
Retailer 2
-
$6,157 NZD
View
Final sale: no returns
A
Retailer 3
-
$6,169 NZD
View
A
Retailer 4
-
$6,252 NZD
View
A
Retailer 5
-
$6,285 NZD
View
A
Retailer 6
-
$6,671 NZD
View
A
Retailer 7
-
$6,929 NZD
View
A
Retailer 8
-
$6,934 NZD
View
Retailer 9
-
$6,947 NZD
View
Price last confirmed 9 days ago
A
Retailer 10
-
$7,030 NZD
View
A
Retailer 11
-
$7,697 NZD
View
A
Retailer 12
-
$7,768 NZD
View
A
Retailer 13
-
$8,143 NZD
View
B+
Retailer 14
-
$11,126 NZD
View
Most Expensive
B
NZ Jewellers
486ccb40-1214-460a-8f96-964fb2254931 · Nov 5
$11,623 NZD
$6,443 USD
View
14 more retailers have this diamond
Prices start from $5,922 NZDSave up to $5,700 NZD

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
$5,922 NZD