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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 HK$36,859 HKD
As of November 6, 2026
Save HK$26,569 HKD (42%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: HK$66,782 HKD 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: HK$37,416 HKD|Low: HK$36,859 HKD|High: HK$64,369 HKD|Avg: HK$44,227 HKD|-1.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 6, 2026
Retailer 6HK$36,859 HKD
Retailer 1HK$37,416 HKD
Retailer 3HK$39,320 HKD
Retailer 5HK$39,932 HKD
Retailer 2HK$44,932 HKD
Retailer 4HK$63,428 HKD

40 data points across 6 retailers

12 retailersHK$36,859 HKD to HK$63,428 HKD

A
Cheapest Retailer
-
HK$36,859 HKD
Final sale: no returns
A
Retailer 2
-
HK$37,416 HKD
View
A
Retailer 3
-
HK$39,320 HKD
View
Retailer 4
-
HK$39,932 HKD
View
Price last confirmed 30 days ago
Retailer 5
-
HK$39,932 HKD
View
Price last confirmed 30 days ago
Retailer 6
-
HK$39,932 HKD
View
Price last confirmed 37 days ago
Retailer 7
-
HK$39,932 HKD
View
Price last confirmed 13 days ago
Retailer 8
-
HK$42,244 HKD
View
Price last confirmed 12 days ago
B+
Retailer 9
-
HK$44,932 HKD
View
Retailer 10
-
HK$46,076 HKD
View
Price last confirmed 39 days ago
B
Retailer 11
-
HK$63,428 HKD
View
Most Expensive
NZ Jewellers
340f49aa-9876-4491-8142-514b4e5a0261 · Sep 29
HK$66,782 HKD
$8,521 USD
View
Price last confirmed 38 days ago
11 more retailers have this diamond
Prices start from HK$36,859 HKDSave up to HK$26,569 HKD

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
HK$36,859 HKD