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Heart|Natural|GIA

1.51ct F SI2 Heart Natural Diamond

EX • F/SI2 • GIA 1555651065

Certificate GIA 1555651065

Diamond specifications and retailer prices

From $8,484 NZD
As of November 6, 2026
Save $6,115 NZD (42%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $15,371 NZD at NZ Jewellers · As of September 29, 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 SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1555651065. Listed at 12 retailers as of November 4, 2026, with a 72% 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
PolishVery Good
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 1555651065
Dimensions7.99 × 6.79 × 4.70 mm
L/W Ratio1.18
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Twinning Wisp, Crystal, Feather, Needle, Natural
Top View
7.99 mm6.79 mm1.51 ctF / SI2
OriginNatural
CutExcellent
PolishVery Good
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1555651065
Side View
Table 57.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 58.8%

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: $8,612 NZD|Low: $8,484 NZD|High: $14,815 NZD|Avg: $10,179 NZD|-1.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 6, 2026
Retailer 6$8,484 NZD
Retailer 1$8,612 NZD
Retailer 3$9,050 NZD
Retailer 5$9,191 NZD
Retailer 2$10,342 NZD
Retailer 4$14,599 NZD

40 data points across 6 retailers

12 retailers$8,484 NZD to $14,599 NZD

A
Cheapest Retailer
-
$8,484 NZD
Final sale: no returns
A
Retailer 2
-
$8,612 NZD
View
A
Retailer 3
-
$9,050 NZD
View
Retailer 4
-
$9,191 NZD
View
Price last confirmed 30 days ago
Retailer 5
-
$9,191 NZD
View
Price last confirmed 30 days ago
Retailer 6
-
$9,191 NZD
View
Price last confirmed 37 days ago
Retailer 7
-
$9,191 NZD
View
Price last confirmed 13 days ago
Retailer 8
-
$9,723 NZD
View
Price last confirmed 12 days ago
B+
Retailer 9
-
$10,342 NZD
View
Retailer 10
-
$10,605 NZD
View
Price last confirmed 39 days ago
B
Retailer 11
-
$14,599 NZD
View
Most Expensive
NZ Jewellers
340f49aa-9876-4491-8142-514b4e5a0261 · Sep 29
$15,371 NZD
$8,521 USD
View
Price last confirmed 38 days ago
11 more retailers have this diamond
Prices start from $8,484 NZDSave up to $6,115 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
$8,484 NZD