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Oval|Natural|GIA

1.51ct M SI2 Oval Natural Diamond

EX • M/SI2 • GIA 6451145539

Certificate GIA 6451145539

Diamond specifications and retailer prices

From HK$15,432 HKD
As of November 5, 2026
Save HK$22,203 HKD (59%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: HK$37,635 HKD at NZ Jewellers · As of November 5, 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 SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6451145539. Listed at 5 retailers as of November 5, 2026, with prices from HK$15,432 to HK$37,635, a HK$22,203 spread on the same certified stone. NZ Jewellers lists it at HK$37,635. 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 (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6451145539
Dimensions9.71 × 6.17 × 3.73 mm
L/W Ratio1.57
Top View
9.71 mm6.17 mm1.51 ctM / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6451145539
Side View
TableCrownGirdlePavilionCulet: NoneDepth

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 5
Current: HK$37,635 HKD|Low: HK$11,129 HKD|High: HK$37,635 HKD|Avg: HK$18,421 HKD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 29, 2026
Retailer 8HK$11,129 HKD
Retailer 6HK$13,653 HKD
Retailer 2HK$15,432 HKD
Retailer 4HK$15,432 HKD
Retailer 5HK$16,145 HKD
Retailer 3HK$17,807 HKD
Retailer 7HK$19,852 HKD
NZ JewellersHK$37,635 HKD

8 data points across 8 retailers

5 retailersHK$15,432 HKD to HK$37,635 HKD

Retailer 1
-
HK$15,432 HKD
Price last confirmed 8 days ago
B+
Retailer 2
-
HK$15,432 HKD
View
B+
Retailer 3
-
HK$16,145 HKD
View
B+
Retailer 4
-
HK$17,807 HKD
View
Most Expensive
C
NZ Jewellers
a678c076-236a-47eb-8e11-390cb2cef396 · Nov 5
HK$37,635 HKD
$4,802 USD
View
4 more retailers have this diamond
Prices start from HK$15,432 HKDSave up to HK$22,203 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$15,432 HKD