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Oval|Natural|GIA

0.51ct I SI2 Oval Natural Diamond

EX • I/SI2 • GIA 5533910368

Certificate GIA 5533910368

Diamond specifications and retailer prices

From HK$5,477 HKD
$698 USD
As of October 29, 2026
Save HK$5,614 HKD (51%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: HK$18,964 HKD at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 0.51ct natural oval diamond

This 0.51ct natural oval sits in the half to three-quarter carat band, graded I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 5533910368. Listed at 15 retailers as of October 26, 2026, with a 103% 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

0.51
Carat
I
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.42°
Pavilion angle39.04°
OriginNatural
Grading LabGIA
CertificateGIA 5533910368
Dimensions6.48 × 4.44 × 2.69 mm
L/W Ratio1.46
Top View
6.48 mm4.44 mm0.51 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5533910368
Side View
Table 57.0%Crown 36.42°Girdle: STK-THKPavilion 39.04°Culet: NoneDepth 60.6%

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: Oct 29
Current: HK$18,964 HKD|Low: HK$5,477 HKD|High: HK$18,964 HKD|Avg: HK$8,444 HKD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 2, 2026
Retailer 6HK$5,477 HKD
Retailer 8HK$5,477 HKD
Retailer 5HK$5,688 HKD
Retailer 7HK$6,324 HKD
Retailer 10HK$6,952 HKD
Retailer 3HK$7,205 HKD
Retailer 2HK$7,843 HKD
Retailer 9HK$9,098 HKD
Retailer 4HK$11,091 HKD
NZ JewellersHK$18,964 HKD

41 data points across 10 retailers

15 retailersHK$5,477 HKD to HK$11,091 HKD

B+
Cheapest Retailer
-
HK$5,477 HKD
$698 USD
B+
Retailer 2
-
HK$5,477 HKD
$698 USD
View
B+
Retailer 3
-
HK$5,594 HKD
$713 USD
View
B+
Retailer 4
-
HK$5,688 HKD
$725 USD
View
B
Retailer 5
-
HK$6,324 HKD
$806 USD
View
B+
Retailer 6
-
HK$6,740 HKD
$859 USD
View
B
Retailer 7
-
HK$6,905 HKD
$880 USD
View
B
Retailer 8
-
HK$6,905 HKD
$880 USD
View
B
Retailer 9
-
HK$6,952 HKD
$886 USD
View
B
Retailer 10
-
HK$7,140 HKD
$910 USD
View
B
Retailer 11
-
HK$7,205 HKD
£723 GBP
View
B
Retailer 12
-
HK$7,843 HKD
€952 EUR
View
B
Retailer 13
-
HK$11,091 HKD
£1,113 GBP
View
Retailer 14
-
HK$17,463 HKD
CA$3,091 CAD
View
Price under review
Most Expensive
NZ Jewellers
a946eeb6-7b30-43fe-9a47-f908a73a7f6c · Oct 30
HK$18,964 HKD
$2,417 USD
View
Price under review
14 more retailers have this diamond
Prices start from HK$5,477 HKDSave up to HK$5,614 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+
0.51ct Oval
HK$5,477 HKD