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Heart|Natural|GIA

1.51ct K SI1 Heart Natural Diamond

EX • K/SI1 • GIA 2548532604

Certificate GIA 2548532604

Diamond specifications and retailer prices

From HK$18,943 HKD
As of November 6, 2026
Save HK$3,723 HKD (16%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: HK$22,666 HKD at Blue Nile · As of November 5, 2026
View at Blue Nile

About this 1.51ct natural heart diamond

This 1.51ct natural heart sits in the one-and-a-half to two carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2548532604. Listed at 7 retailers as of November 5, 2026, with prices from HK$18,943 to HK$22,666, a HK$3,723 spread on the same certified stone. Blue Nile lists it at HK$22,666. 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
K
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2548532604
Dimensions6.75 × 8.07 × 4.84 mm
L/W Ratio1.20
Top View
6.75 mm8.07 mm1.51 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2548532604
Side View
Table 61.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 60.0%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: HK$22,666 HKD|Low: HK$17,438 HKD|High: HK$26,075 HKD|Avg: HK$21,484 HKD|-13.1%
Blue Nile
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 5HK$18,943 HKD
Retailer 4HK$19,178 HKD
Retailer 7HK$19,429 HKD
Retailer 2HK$19,915 HKD
Retailer 3HK$20,354 HKD
Retailer 6HK$22,015 HKD
Blue NileHK$22,666 HKD

42 data points across 7 retailers

7 retailersHK$18,943 HKD to HK$22,666 HKD

A
Cheapest Retailer
-
HK$18,943 HKD
A
Retailer 2
-
HK$19,178 HKD
View
Final sale: no returns
A
Retailer 3
-
HK$19,429 HKD
View
A
Retailer 4
-
HK$19,915 HKD
View
A
Retailer 5
-
HK$20,354 HKD
View
A
Retailer 6
-
HK$22,015 HKD
View
Most Expensive
A
Blue Nile
28033762 · Nov 5
HK$22,666 HKD
$2,892 USD
View
6 more retailers have this diamond
Prices start from HK$18,943 HKDSave up to HK$3,723 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$18,943 HKD