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Heart|Natural|GIA

1.51ct K SI2 Heart Natural Diamond

EX • K/SI2 • GIA 6531540681

Certificate GIA 6531540681

Diamond specifications and retailer prices

From HK$22,290 HKD
As of November 1, 2026
Save HK$24,304 HKD (52%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: HK$46,593 HKD at NZ Jewellers · As of November 3, 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 K colour (faint-tinted) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6531540681. Listed at 6 retailers as of November 1, 2026, with prices from HK$22,290 to HK$46,593, a HK$24,304 spread on the same certified stone. NZ Jewellers lists it at HK$46,593. 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
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.46°
Pavilion angle40.31°
OriginNatural
Grading LabGIA
CertificateGIA 6531540681
Dimensions7.34 × 7.96 × 4.58 mm
L/W Ratio1.08
Girdle conditionThick
Key to symbols
Twinning Wisp, Feather, Crystal, Cloud, Cavity, Needle, Indented Natural
Top View
7.34 mm7.96 mm1.51 ctK / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6531540681
Side View
Table 61.0%Crown 37.46°Girdle: STK-THKPavilion 40.31°Culet: NoneDepth 57.6%

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$46,593 HKD|Low: HK$21,427 HKD|High: HK$47,056 HKD|Avg: HK$28,145 HKD|-1.0%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 2, 2026
Retailer 7HK$21,427 HKD
Retailer 4HK$22,290 HKD
Retailer 2HK$22,329 HKD
Retailer 5HK$23,144 HKD
Retailer 6HK$23,442 HKD
Retailer 8HK$25,299 HKD
Retailer 9HK$27,517 HKD
Retailer 3HK$39,046 HKD
NZ JewellersHK$46,593 HKD

29 data points across 9 retailers

6 retailersHK$22,290 HKD to HK$46,593 HKD

A
Cheapest Retailer
-
HK$22,290 HKD
A
Retailer 2
-
HK$22,329 HKD
View
A
Retailer 3
-
HK$23,144 HKD
View
A
Retailer 4
-
HK$23,442 HKD
View
B
Retailer 5
-
HK$39,046 HKD
View
Most Expensive
B
NZ Jewellers
7388c1ca-8739-4153-b9d9-457d8c0a68ab · Nov 3
HK$46,593 HKD
$5,945 USD
View
5 more retailers have this diamond
Prices start from HK$22,290 HKDSave up to HK$24,304 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$22,290 HKD