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Heart|Natural|GIA

1.51ct I SI1 Heart Natural Diamond

ID • I/SI1 • GIA 1535629313

Certificate GIA 1535629313

Diamond specifications and retailer prices

From HK$27,282 HKD
As of November 6, 2026
Save HK$29,382 HKD (52%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: HK$63,209 HKD at NZ Jewellers · As of October 18, 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 I 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 1535629313. Listed at 19 retailers as of November 4, 2026, with a 108% 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
I
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1535629313
Dimensions7.99 × 7.02 × 4.65 mm
L/W Ratio1.14
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Cloud, Feather, Needle
Top View
7.99 mm7.02 mm1.51 ctI / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1535629313
Side View
Table 58.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 58.2%

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$28,975 HKD|Low: HK$27,180 HKD|High: HK$58,483 HKD|Avg: HK$36,672 HKD|-3.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 10HK$27,282 HKD
Retailer 1HK$28,975 HKD
Retailer 7HK$32,517 HKD
Retailer 2HK$32,925 HKD
Retailer 4HK$34,680 HKD
Retailer 5HK$36,130 HKD
Retailer 9HK$36,601 HKD
Retailer 3HK$36,812 HKD
Retailer 11HK$36,844 HKD
Retailer 6HK$43,521 HKD
Retailer 8HK$56,664 HKD

33 data points across 11 retailers

19 retailersHK$27,282 HKD to HK$56,664 HKD

A
Cheapest Retailer
-
HK$27,282 HKD
A
Retailer 2
-
HK$28,975 HKD
View
A
Retailer 3
-
HK$32,517 HKD
View
A
Retailer 4
-
HK$32,925 HKD
View
Final sale: no returns
B+
Retailer 5
-
HK$33,630 HKD
View
B+
Retailer 6
-
HK$33,662 HKD
View
B+
Retailer 7
-
HK$34,680 HKD
View
B+
Retailer 8
-
HK$35,597 HKD
View
B+
Retailer 9
-
HK$36,130 HKD
View
Retailer 10
-
HK$36,279 HKD
View
Price last confirmed 22 days ago
Retailer 11
-
HK$36,279 HKD
View
Price last confirmed 22 days ago
Retailer 12
-
HK$36,279 HKD
View
Price last confirmed 20 days ago
B+
Retailer 13
-
HK$36,601 HKD
View
Retailer 14
-
HK$36,812 HKD
View
Price last confirmed 29 days ago
B+
Retailer 15
-
HK$36,844 HKD
View
Retailer 16
-
HK$41,867 HKD
View
Price last confirmed 19 days ago
B+
Retailer 17
-
HK$43,521 HKD
View
B
Retailer 18
-
HK$56,664 HKD
View
Most Expensive
NZ Jewellers
a8878e84-ef46-4992-b67a-8eceeb60932b · Oct 18
HK$63,209 HKD
$8,065 USD
View
Price last confirmed 19 days ago
18 more retailers have this diamond
Prices start from HK$27,282 HKDSave up to HK$29,382 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$27,282 HKD