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Heart|Natural|GIA

1.51ct I SI2 Heart Natural Diamond

VG • I/SI2 • GIA 2557140157

Certificate GIA 2557140157

Diamond specifications and retailer prices

From $5,653 NZD
As of November 6, 2026
Save $6,635 NZD (54%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $13,998 NZD at NZ Jewellers · As of September 25, 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 SI2 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 2557140157. Listed at 14 retailers as of November 4, 2026, with a 117% 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
I
Colour
SI2
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2557140157
Dimensions6.99 × 7.88 × 4.63 mm
L/W Ratio1.13
Top View
6.99 mm7.88 mm1.51 ctI / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2557140157
Side View
Table 59.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 58.7%

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: $6,177 NZD|Low: $5,653 NZD|High: $12,950 NZD|Avg: $8,066 NZD|+1.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 11$5,653 NZD
Retailer 8$5,702 NZD
Retailer 1$6,177 NZD
Retailer 2$6,346 NZD
Retailer 3$6,591 NZD
Retailer 4$6,620 NZD
Retailer 5$6,716 NZD
Retailer 7$6,945 NZD
Retailer 10$7,483 NZD
Retailer 9$9,867 NZD
Retailer 6$11,720 NZD
Retailer 12$12,288 NZD

36 data points across 12 retailers

14 retailers$5,653 NZD to $12,288 NZD

A
Cheapest Retailer
-
$5,653 NZD
A
Retailer 2
-
$5,702 NZD
View
A
Retailer 3
-
$6,177 NZD
View
Final sale: no returns
A
Retailer 4
-
$6,346 NZD
View
A
Retailer 5
-
$6,591 NZD
View
A
Retailer 6
-
$6,620 NZD
View
A
Retailer 7
-
$6,716 NZD
View
A
Retailer 8
-
$6,945 NZD
View
A
Retailer 9
-
$7,483 NZD
View
B+
Retailer 10
-
$8,193 NZD
View
B+
Retailer 11
-
$9,867 NZD
View
B
Retailer 12
-
$11,720 NZD
View
B
Retailer 13
-
$12,288 NZD
View
Most Expensive
NZ Jewellers
d85614ba-f21d-4946-a9ce-9e008d9e8309 · Sep 25
$13,998 NZD
$7,760 USD
View
Price last confirmed 42 days ago
13 more retailers have this diamond
Prices start from $5,653 NZDSave up to $6,635 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
$5,653 NZD