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Heart|Natural|GIA

1.51ct F SI2 Heart Natural Diamond

EX • F/SI2 • GIA 6542728816

Certificate GIA 6542728816

Diamond specifications and retailer prices

From $6,234 NZD
As of November 6, 2026
Save $6,842 NZD (52%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $15,281 NZD at Queensmith · As of October 28, 2026
View at Queensmith

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 SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6542728816. Listed at 16 retailers as of November 4, 2026, with a 110% 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
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6542728816
Dimensions7.06 × 8.02 × 4.60 mm
L/W Ratio1.14
Top View
7.06 mm8.02 mm1.51 ctF / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6542728816
Side View
Table 62.0%CrownGirdle: THN-VTKPavilionCulet: NoneDepth 57.4%

Caratlytics Score

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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: $15,281 NZD|Low: $6,164 NZD|High: $15,578 NZD|Avg: $9,314 NZD|-1.9%
Queensmith
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 6$6,234 NZD
Retailer 2$6,633 NZD
Retailer 7$7,598 NZD
Retailer 9$7,921 NZD
Retailer 4$8,018 NZD
Retailer 3$8,105 NZD
Retailer 8$8,502 NZD
Retailer 5$13,076 NZD
Queensmith$15,281 NZD

41 data points across 9 retailers

16 retailers$6,234 NZD to $13,076 NZD

A
Cheapest Retailer
-
$6,234 NZD
A
Retailer 2
-
$6,633 NZD
View
A
Retailer 3
-
$7,598 NZD
View
Final sale: no returns
A
Retailer 4
-
$7,921 NZD
View
A
Retailer 5
-
$8,018 NZD
View
A
Retailer 6
-
$8,105 NZD
View
Retailer 7
-
$8,233 NZD
View
Price last confirmed 22 days ago
Retailer 8
-
$8,233 NZD
View
Price last confirmed 22 days ago
Retailer 9
-
$8,233 NZD
View
Price last confirmed 20 days ago
A
Retailer 10
-
$8,291 NZD
View
A
Retailer 11
-
$8,502 NZD
View
B+
Retailer 12
-
$8,744 NZD
View
Retailer 13
-
$9,499 NZD
View
Price last confirmed 19 days ago
B+
Retailer 14
-
$13,076 NZD
View
Retailer 15
-
$14,343 NZD
View
Price last confirmed 20 days ago
Most Expensive
Queensmith
6542728816 · Oct 28
$15,281 NZD
£6,670 GBP
View
Price last confirmed 9 days ago
15 more retailers have this diamond
Prices start from $6,234 NZDSave up to $6,842 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
$6,234 NZD