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Round|Natural|GIA

1.51ct M SI2 Round Natural Diamond

EX • M/SI2 • GIA 1559703309

Certificate GIA 1559703309

Diamond specifications and retailer prices

From HK$19,174 HKD
As of November 6, 2026
Save HK$10,489 HKD (35%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: HK$44,263 HKD at NZ Jewellers · As of October 17, 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 M colour (faint-tinted) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1559703309. Listed at 11 retailers as of November 2, 2026, with a 55% 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
M
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle41.4°
OriginNatural
Grading LabGIA
CertificateGIA 1559703309
Dimensions7.32 × 7.29 × 4.57 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Feather, Crystal, Needle
Top View
7.32 mm7.29 mm1.51 ctM / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1559703309
Side View
Table 58.0%Crown 35°Girdle: MED-STKPavilion 41.4°Culet: NoneDepth 62.6%

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 6
Current: HK$23,889 HKD|Low: HK$18,978 HKD|High: HK$29,733 HKD|Avg: HK$23,646 HKD
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 4HK$19,174 HKD
Retailer 2HK$20,311 HKD
Retailer 5HK$23,065 HKD
Retailer 6HK$23,496 HKD
Retailer 1HK$23,889 HKD
Retailer 7HK$25,411 HKD
Retailer 3HK$29,663 HKD

43 data points across 7 retailers

11 retailersHK$19,174 HKD to HK$29,663 HKD

A
Cheapest Retailer
-
HK$19,174 HKD
A
Retailer 2
-
HK$20,311 HKD
View
B+
Retailer 3
-
HK$23,065 HKD
View
B+
Retailer 4
-
HK$23,496 HKD
View
B+
Retailer 5
-
HK$23,889 HKD
View
Retailer 6
-
HK$25,411 HKD
View
Price last confirmed 17 days ago
Retailer 7
-
HK$25,411 HKD
View
Price last confirmed 21 days ago
Retailer 8
-
HK$26,383 HKD
View
Price last confirmed 22 days ago
Retailer 9
-
HK$29,318 HKD
View
Price last confirmed 19 days ago
B
Retailer 10
-
HK$29,663 HKD
View
Most Expensive
NZ Jewellers
9fc923be-6068-412e-9d7a-3b73b8980827 · Oct 17
HK$44,263 HKD
$5,642 USD
View
Price last confirmed 19 days ago
10 more retailers have this diamond
Prices start from HK$19,174 HKDSave up to HK$10,489 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$19,174 HKD