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Heart|Natural|GIA

1.51ct F SI1 Heart Natural Diamond

ID • F/SI1 • GIA 5553228913

Certificate GIA 5553228913

Diamond specifications and retailer prices

From $8,670 NZD
$4,878 USD
As of November 1, 2026
Save $6,424 NZD (43%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $17,663 NZD at NZ Jewellers · As of September 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 F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 5553228913. Listed at 20 retailers as of November 1, 2026, with a 74% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.51
Carat
F
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle37°
Pavilion angle43.22°
OriginNatural
Grading LabGIA
CertificateGIA 5553228913
Dimensions7.94 × 6.77 × 4.82 mm
L/W Ratio1.17
Top View
7.94 mm6.77 mm1.51 ctF / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 5553228913
Side View
Table 59.0%Crown 37°Girdle: Slightly ThickPavilion 43.22°Culet: NoneDepth 60.7%

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 1
Current: $9,995 NZD|Low: $7,651 NZD|High: $15,746 NZD|Avg: $11,128 NZD|-0.9%
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 3, 2026
Retailer 12$8,670 NZD
Retailer 11$8,936 NZD
Retailer 9$9,306 NZD
Retailer 2$9,457 NZD
Retailer 8$9,571 NZD
Retailer 1$9,995 NZD
Retailer 6$10,521 NZD
Retailer 4$10,561 NZD
Retailer 3$10,578 NZD
Retailer 5$11,193 NZD
Retailer 10$12,588 NZD
Retailer 7$15,094 NZD

43 data points across 12 retailers

20 retailers$8,670 NZD to $15,094 NZD

A
Cheapest Retailer
-
$8,670 NZD
$4,878 USD
A
Retailer 2
-
$8,936 NZD
$5,028 USD
View
A
Retailer 3
-
$9,306 NZD
$5,236 USD
View
B+
Retailer 4
-
$9,457 NZD
$5,321 USD
View
Final sale: no returns
B+
Retailer 5
-
$9,571 NZD
$5,385 USD
View
B+
Retailer 6
-
$9,995 NZD
£4,428 GBP
View
B+
Retailer 7
-
$10,521 NZD
$5,920 USD
View
Retailer 8
-
$10,561 NZD
$5,942 USD
View
Price last confirmed 33 days ago
Retailer 9
-
$10,561 NZD
$5,942 USD
View
Price last confirmed 32 days ago
Retailer 10
-
$10,561 NZD
$5,942 USD
View
Price last confirmed 49 days ago
Retailer 11
-
$10,561 NZD
$5,942 USD
View
Price last confirmed 18 days ago
Retailer 12
-
$10,578 NZD
A$9,156 AUD
View
Price last confirmed 24 days ago
B+
Retailer 13
-
$10,830 NZD
$6,093 USD
View
B+
Retailer 14
-
$11,193 NZD
€5,998 EUR
View
Retailer 15
-
$12,185 NZD
$6,856 USD
View
Price last confirmed 57 days ago
Retailer 16
-
$12,185 NZD
$6,856 USD
View
Price last confirmed 35 days ago
Retailer 17
-
$12,185 NZD
$6,856 USD
View
Price last confirmed 49 days ago
B+
Retailer 18
-
$12,588 NZD
ZAR 114,423 ZAR
View
B
Retailer 19
-
$15,094 NZD
£6,687 GBP
View
Most Expensive
NZ Jewellers
5c00d538-971f-4924-a6de-5e7610e26984 · Sep 30
$17,663 NZD
$9,938 USD
View
Price last confirmed 33 days ago
19 more retailers have this diamond
Prices start from $8,670 NZDSave up to $6,424 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
$8,670 NZD