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Heart|Natural|GIA

1.51ct H SI1 Heart Natural Diamond

GD • H/SI1 • GIA 1557134574

Certificate GIA 1557134574

Diamond specifications and retailer prices

From $8,454 NZD
$4,757 USD
As of November 2, 2026
Save $13,000 NZD (61%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $21,454 NZD at NZ Jewellers · As of October 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 H colour (near-colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 1557134574. Listed at 16 retailers as of October 30, 2026, with prices from $8,454 to $21,454, a $13,000 spread on the same certified stone. NZ Jewellers lists it at $21,454. 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
H
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1557134574
Dimensions6.90 × 8.14 × 4.83 mm
L/W Ratio1.18
Culet sizeNone
Key to symbols
Cloud, Crystal, Feather, Needle, Indented Natural
Top View
6.90 mm8.14 mm1.51 ctH / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1557134574
Side View
Table 59.0%CrownGirdle: MED-STKPavilionCulet: NoneDepth 59.4%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: $21,454 NZD|Low: $6,947 NZD|High: $21,454 NZD|Avg: $11,042 NZD
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
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
Retailer 21
Retailer 22
November 2, 2026
Retailer 15$6,947 NZD
Retailer 14$6,999 NZD
Retailer 21$8,454 NZD
Retailer 8$8,596 NZD
Retailer 11$9,222 NZD
Retailer 10$9,811 NZD
Retailer 12$9,811 NZD
Retailer 20$10,134 NZD
Retailer 9$10,148 NZD
Retailer 22$10,266 NZD
Retailer 18$10,726 NZD
Retailer 6$10,788 NZD
Retailer 7$10,817 NZD
Retailer 19$11,620 NZD
Retailer 2$12,300 NZD
Retailer 17$12,450 NZD
Retailer 4$13,408 NZD
Retailer 5$14,137 NZD
Retailer 3$14,250 NZD
Retailer 16$15,760 NZD
Retailer 13$17,877 NZD
NZ Jewellers$21,454 NZD

40 data points across 22 retailers

16 retailers$8,454 NZD to $21,454 NZD

B+
Cheapest Retailer
-
$8,454 NZD
$4,757 USD
Retailer 2
-
$8,596 NZD
SGD 6,536 SGD
View
Price last confirmed 25 days ago
B
Retailer 3
-
$10,134 NZD
$5,702 USD
View
B
Retailer 4
-
$10,266 NZD
$5,776 USD
View
B
Retailer 5
-
$10,726 NZD
$6,035 USD
View
B
Retailer 6
-
$10,788 NZD
$6,070 USD
View
B
Retailer 7
-
$10,817 NZD
$6,086 USD
View
B
Retailer 8
-
$11,620 NZD
$6,538 USD
View
B
Retailer 9
-
$12,300 NZD
£5,450 GBP
View
Retailer 10
-
$12,450 NZD
A$10,777 AUD
View
Price last confirmed 11 days ago
B
Retailer 11
-
$12,724 NZD
$7,159 USD
View
B
Retailer 12
-
$13,408 NZD
$7,544 USD
View
B
Retailer 13
-
$14,250 NZD
$8,018 USD
View
B
Retailer 14
-
$15,760 NZD
ZAR 143,251 ZAR
View
B
Retailer 15
-
$17,877 NZD
£7,920 GBP
View
Most Expensive
C
NZ Jewellers
18bf8836-719f-4766-94cd-708c02634024 · Oct 30
$21,454 NZD
$12,071 USD
View
15 more retailers have this diamond
Prices start from $8,454 NZDSave up to $13,000 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.

B+
1.51ct Heart
$8,454 NZD