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Heart|Natural|GIA

1.51ct I SI2 Heart Natural Diamond

EX • I/SI2 • GIA 2427009307

Certificate GIA 2427009307

Diamond specifications and retailer prices

From HK$28,152 HKD
As of October 31, 2026
Save HK$46,468 HKD (62%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: HK$74,620 HKD at Adiamor · As of November 5, 2026
View at Adiamor

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 SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2427009307. Listed at 15 retailers as of October 31, 2026, with prices from HK$28,152 to HK$74,620, a HK$46,468 spread on the same certified stone. Adiamor lists it at HK$74,620. 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
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2427009307
Dimensions6.57 × 8.10 × 4.46 mm
L/W Ratio1.23
Top View
6.57 mm8.10 mm1.51 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2427009307
Side View
Table 62.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 55.1%

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: Oct 31
Current: HK$66,939 HKD|Low: HK$26,851 HKD|High: HK$66,939 HKD|Avg: HK$37,825 HKD|+118.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 5HK$28,152 HKD
Retailer 6HK$28,183 HKD
Retailer 4HK$32,807 HKD
Retailer 7HK$35,833 HKD
Retailer 2HK$38,223 HKD
Retailer 8HK$38,826 HKD
Retailer 3HK$61,665 HKD
Retailer 1HK$66,939 HKD

42 data points across 8 retailers

15 retailersHK$28,152 HKD to HK$74,620 HKD

A
Cheapest Retailer
-
HK$28,152 HKD
A
Retailer 2
-
HK$28,183 HKD
View
A
Retailer 3
-
HK$32,807 HKD
View
B+
Retailer 4
-
HK$33,152 HKD
View
B+
Retailer 5
-
HK$35,833 HKD
View
Final sale: no returns
B+
Retailer 6
-
HK$38,223 HKD
View
B+
Retailer 7
-
HK$38,826 HKD
View
B+
Retailer 8
-
HK$38,826 HKD
View
Retailer 9
-
HK$38,826 HKD
View
Price last confirmed 9 days ago
B+
Retailer 10
-
HK$40,010 HKD
View
B
Retailer 11
-
HK$44,799 HKD
View
B
Retailer 12
-
HK$61,665 HKD
View
B
Retailer 13
-
HK$66,939 HKD
View
B
Retailer 14
-
HK$67,637 HKD
View
Most Expensive
B
Adiamor
D-64680553 · Nov 5
HK$74,620 HKD
$9,521 USD
View
14 more retailers have this diamond
Prices start from HK$28,152 HKDSave up to HK$46,468 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$28,152 HKD