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Round|Natural|GIA

1.51ct K SI1 Round Natural Diamond

EX • K/SI1 • GIA 5496366542

Certificate GIA 5496366542

Diamond specifications and retailer prices

From HK$27,984 HKD
As of November 4, 2026
Save HK$31,812 HKD (53%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: HK$64,401 HKD at NZ Jewellers · As of October 20, 2026
View at NZ Jewellers

About this 1.51ct natural round diamond

This 1.51ct natural round 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 and certified by GIA 5496366542. Listed at 16 retailers as of November 4, 2026, with a 114% 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
K
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 5496366542
Dimensions7.36 × 7.39 × 4.48 mm
L/W Ratio1.00
Star length45%
Lower girdle75%
Top View
7.36 mm7.39 mm1.51 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5496366542
Side View
Table 59.0%Crown 34°Girdle: Slightly ThickPavilion 40.6°Culet: NoneDepth 60.7%

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 4
Current: HK$40,991 HKD|Low: HK$27,984 HKD|High: HK$59,953 HKD|Avg: HK$41,174 HKD|-0.5%
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
November 6, 2026
Retailer 14HK$27,984 HKD
Retailer 12HK$30,008 HKD
Retailer 4HK$32,361 HKD
Retailer 2HK$34,103 HKD
Retailer 3HK$34,103 HKD
Retailer 7HK$36,825 HKD
Retailer 5HK$38,716 HKD
Retailer 6HK$39,352 HKD
Retailer 1HK$40,991 HKD
Retailer 13HK$41,564 HKD
Retailer 9HK$41,744 HKD
Retailer 10HK$42,317 HKD
Retailer 8HK$45,926 HKD
Retailer 11HK$59,796 HKD

36 data points across 14 retailers

16 retailersHK$27,984 HKD to HK$59,796 HKD

A
Cheapest Retailer
-
HK$27,984 HKD
A
Retailer 2
-
HK$30,008 HKD
View
B+
Retailer 3
-
HK$32,361 HKD
View
Retailer 4
-
HK$33,483 HKD
View
Price last confirmed 21 days ago
Retailer 5
-
HK$34,103 HKD
View
Price last confirmed 15 days ago
Retailer 6
-
HK$34,103 HKD
View
Price last confirmed 15 days ago
B+
Retailer 7
-
HK$36,825 HKD
View
B+
Retailer 8
-
HK$38,716 HKD
View
Retailer 9
-
HK$39,352 HKD
View
Price last confirmed 16 days ago
B+
Retailer 10
-
HK$40,991 HKD
View
Retailer 11
-
HK$41,564 HKD
View
Price last confirmed 14 days ago
B
Retailer 12
-
HK$41,744 HKD
View
B
Retailer 13
-
HK$42,317 HKD
View
B
Retailer 14
-
HK$45,926 HKD
View
B
Retailer 15
-
HK$59,796 HKD
View
Most Expensive
NZ Jewellers
9eac41b1-20e5-4cf4-ae86-a3e1d9d3065b · Oct 20
HK$64,401 HKD
$8,209 USD
View
Price last confirmed 16 days ago
15 more retailers have this diamond
Prices start from HK$27,984 HKDSave up to HK$31,812 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 Round
HK$27,984 HKD