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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 $4,703 USD
As of November 6, 2026
Save $3,390 USD (42%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $8,521 USD 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
Color
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: $4,774 USD|Low: $4,703 USD|High: $8,213 USD|Avg: $5,643 USD|-1.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 6, 2026
Retailer 6$4,703 USD
Retailer 1$4,774 USD
Retailer 3$5,017 USD
Retailer 5$5,095 USD
Retailer 2$5,733 USD
Retailer 4$8,093 USD

40 data points across 6 retailers

12 retailers$4,703 USD to $8,093 USD

A
Cheapest Retailer
-
$4,703 USD
Final sale: no returns
A
Retailer 2
-
$4,774 USD
View
A
Retailer 3
-
$5,017 USD
View
Retailer 4
-
$5,095 USD
View
Price last confirmed 29 days ago
Retailer 5
-
$5,095 USD
View
Price last confirmed 29 days ago
Retailer 6
-
$5,095 USD
View
Price last confirmed 36 days ago
Retailer 7
-
$5,095 USD
View
Price last confirmed 12 days ago
Retailer 8
-
$5,390 USD
View
Price last confirmed 11 days ago
B+
Retailer 9
-
$5,733 USD
View
Retailer 10
-
$5,879 USD
View
Price last confirmed 38 days ago
B
Retailer 11
-
$8,093 USD
View
Most Expensive
NZ Jewellers
340f49aa-9876-4491-8142-514b4e5a0261 · Sep 29
$8,521 USD
View
Price last confirmed 38 days ago
11 more retailers have this diamond
Prices start from $4,703 USDSave up to $3,390 USD

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
$4,703 USD