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Heart|Natural|GIA

1.51ct H SI1 Heart Natural Diamond

EX • H/SI1 • GIA 7546607780

Certificate GIA 7546607780

Diamond specifications and retailer prices

From HK$31,871 HKD
$4,062 USD
As of November 1, 2026
Save HK$34,124 HKD (52%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: HK$75,872 HKD at NZ Jewellers · As of September 25, 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 H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 7546607780. Listed at 21 retailers as of November 1, 2026, with a 107% 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
H
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 7546607780
Dimensions6.80 × 7.95 × 4.72 mm
L/W Ratio1.17
Girdle conditionFaceted
Top View
6.80 mm7.95 mm1.51 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 7546607780
Side View
Table 59.0%CrownGirdle: MED-THKPavilion 41.2°Culet: NoneDepth 59.3%

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$39,074 HKD|Low: HK$31,479 HKD|High: HK$71,127 HKD|Avg: HK$42,761 HKD|-2.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
November 2, 2026
Retailer 17HK$31,871 HKD
Retailer 12HK$32,037 HKD
Retailer 16HK$33,785 HKD
Retailer 14HK$35,119 HKD
Retailer 7HK$35,739 HKD
Retailer 2HK$35,863 HKD
Retailer 8HK$36,092 HKD
Retailer 5HK$36,145 HKD
Retailer 4HK$38,116 HKD
Retailer 1HK$39,074 HKD
Retailer 11HK$40,274 HKD
Retailer 15HK$40,982 HKD
Retailer 9HK$43,203 HKD
Retailer 10HK$44,313 HKD
Retailer 3HK$51,968 HKD
Retailer 13HK$52,647 HKD
Retailer 18HK$65,995 HKD
Retailer 6HK$67,065 HKD

25 data points across 18 retailers

21 retailersHK$31,871 HKD to HK$65,995 HKD

A
Cheapest Retailer
-
HK$31,871 HKD
$4,062 USD
A
Retailer 2
-
HK$32,037 HKD
View
A
Retailer 3
-
HK$33,785 HKD
$4,306 USD
View
B+
Retailer 4
-
HK$35,119 HKD
$4,476 USD
View
Final sale: no returns
A
Retailer 5
-
HK$35,739 HKD
$4,555 USD
View
A
Retailer 6
-
HK$35,863 HKD
€4,353 EUR
View
A
Retailer 7
-
HK$36,092 HKD
$4,600 USD
View
A
Retailer 8
-
HK$36,145 HKD
$4,607 USD
View
B+
Retailer 9
-
HK$38,116 HKD
$4,858 USD
View
B+
Retailer 10
-
HK$39,074 HKD
$4,980 USD
View
B+
Retailer 11
-
HK$40,274 HKD
$5,133 USD
View
Retailer 12
-
HK$40,541 HKD
$5,167 USD
View
Price last confirmed 12 days ago
B+
Retailer 13
-
HK$40,982 HKD
£4,113 GBP
View
B+
Retailer 14
-
HK$43,203 HKD
SGD 7,441 SGD
View
Retailer 15
-
HK$44,313 HKD
A$8,689 AUD
View
Price last confirmed 23 days ago
B
Retailer 16
-
HK$46,654 HKD
A$9,148 AUD
View
B+
Retailer 17
-
HK$51,968 HKD
ZAR 107,001 ZAR
View
B+
Retailer 18
-
HK$52,647 HKD
$6,710 USD
View
B
Retailer 19
-
HK$65,995 HKD
£6,623 GBP
View
Retailer 20
-
HK$67,065 HKD
$8,548 USD
View
Price last confirmed 9 days ago
Most Expensive
NZ Jewellers
dbf135a3-0579-43ef-9381-30a46e39cd96 · Sep 25
HK$75,872 HKD
$9,670 USD
View
Price last confirmed 38 days ago
20 more retailers have this diamond
Prices start from HK$31,871 HKDSave up to HK$34,124 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$31,871 HKD