Heart|Natural|GIA

1.51ct F SI1 Heart Natural Diamond

ID • F/SI1 • GIA 5553228913

Certificate GIA 5553228913

Diamond specifications and retailer prices

From HK$38,273 HKD
$4,878 USD
As of November 1, 2026
Save HK$28,360 HKD (43%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: HK$77,975 HKD 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: HK$44,124 HKD|Low: HK$33,777 HKD|High: HK$69,513 HKD|Avg: HK$49,125 HKD|-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 12HK$38,273 HKD
Retailer 11HK$39,450 HKD
Retailer 9HK$41,082 HKD
Retailer 2HK$41,749 HKD
Retailer 8HK$42,251 HKD
Retailer 1HK$44,124 HKD
Retailer 6HK$46,448 HKD
Retailer 4HK$46,622 HKD
Retailer 3HK$46,697 HKD
Retailer 5HK$49,414 HKD
Retailer 10HK$55,572 HKD
Retailer 7HK$66,633 HKD

43 data points across 12 retailers

20 retailersHK$38,273 HKD to HK$66,633 HKD

A
Cheapest Retailer
-
HK$38,273 HKD
$4,878 USD
A
Retailer 2
-
HK$39,450 HKD
$5,028 USD
View
A
Retailer 3
-
HK$41,082 HKD
$5,236 USD
View
B+
Retailer 4
-
HK$41,749 HKD
$5,321 USD
View
Final sale: no returns
B+
Retailer 5
-
HK$42,251 HKD
$5,385 USD
View
B+
Retailer 6
-
HK$44,124 HKD
£4,428 GBP
View
B+
Retailer 7
-
HK$46,448 HKD
$5,920 USD
View
Retailer 8
-
HK$46,622 HKD
$5,942 USD
View
Price last confirmed 33 days ago
Retailer 9
-
HK$46,622 HKD
$5,942 USD
View
Price last confirmed 32 days ago
Retailer 10
-
HK$46,622 HKD
$5,942 USD
View
Price last confirmed 49 days ago
Retailer 11
-
HK$46,622 HKD
$5,942 USD
View
Price last confirmed 18 days ago
Retailer 12
-
HK$46,697 HKD
A$9,156 AUD
View
Price last confirmed 24 days ago
B+
Retailer 13
-
HK$47,808 HKD
$6,093 USD
View
B+
Retailer 14
-
HK$49,414 HKD
€5,998 EUR
View
Retailer 15
-
HK$53,793 HKD
$6,856 USD
View
Price last confirmed 57 days ago
Retailer 16
-
HK$53,793 HKD
$6,856 USD
View
Price last confirmed 35 days ago
Retailer 17
-
HK$53,793 HKD
$6,856 USD
View
Price last confirmed 49 days ago
B+
Retailer 18
-
HK$55,572 HKD
ZAR 114,423 ZAR
View
B
Retailer 19
-
HK$66,633 HKD
£6,687 GBP
View
Most Expensive
NZ Jewellers
5c00d538-971f-4924-a6de-5e7610e26984 · Sep 30
HK$77,975 HKD
$9,938 USD
View
Price last confirmed 33 days ago
19 more retailers have this diamond
Prices start from HK$38,273 HKDSave up to HK$28,360 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$38,273 HKD