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Oval|Natural|GIA

1.51ct M SI1 Oval Natural Diamond

M/SI1 • GIA 1528973820

Certificate GIA 1528973820

Diamond specifications and retailer prices

From HK$17,830 HKD
As of November 6, 2026
Save HK$5,635 HKD (24%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: HK$46,515 HKD at NZ Jewellers · As of September 19, 2026
View at NZ Jewellers

About this 1.51ct natural oval diamond

This 1.51ct natural oval sits in the one-and-a-half to two carat band, graded M colour (faint-tinted) and SI1 clarity (slightly-included) and certified by GIA 1528973820. Listed at 8 retailers as of November 2, 2026, with a 32% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.51
Carat
M
Colour
SI1
Clarity
-
Cut

Specifications

Cut
PolishExcellent
SymmetryExcellent
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 1528973820
Dimensions9.99 × 5.66 × 3.36 mm
L/W Ratio1.77
Girdle conditionPolished
Culet sizeNone
Key to symbols
Crystal, Feather, Etch Channel, Indented Natural
Top View
9.99 mm5.66 mm1.51 ctM / SI1
OriginNatural
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 1528973820
Side View
Table 66.0%CrownGirdle: ThickPavilionCulet: NoneDepth 59.4%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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$18,739 HKD|Low: HK$17,830 HKD|High: HK$37,063 HKD|Avg: HK$24,221 HKD|-16.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 5HK$17,830 HKD
Retailer 4HK$18,731 HKD
Retailer 1HK$18,739 HKD
Retailer 6HK$22,250 HKD
Retailer 7HK$22,250 HKD
Retailer 2HK$22,948 HKD
Retailer 3HK$23,465 HKD
Retailer 8HK$37,063 HKD

40 data points across 8 retailers

8 retailersHK$17,830 HKD to HK$23,465 HKD

B+
Cheapest Retailer
-
HK$17,830 HKD
B+
Retailer 2
-
HK$18,731 HKD
View
B+
Retailer 3
-
HK$18,739 HKD
View
Retailer 4
-
HK$22,250 HKD
View
Price last confirmed 45 days ago
B
Retailer 5
-
HK$22,948 HKD
View
B
Retailer 6
-
HK$23,465 HKD
View
Retailer 7
-
HK$25,667 HKD
View
Price last confirmed 45 days ago
Most Expensive
NZ Jewellers
deb5d89c-9723-4411-8732-4d1b642d771a · Sep 19
HK$46,515 HKD
$5,935 USD
View
Price last confirmed 47 days ago
7 more retailers have this diamond
Prices start from HK$17,830 HKDSave up to HK$5,635 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.

B+
1.51ct Oval
HK$17,830 HKD