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Oval|Natural|GIA

0.51ct D SI1 Oval Natural Diamond

EX • D/SI1 • GIA 1493017308

Certificate GIA 1493017308

Diamond specifications and retailer prices

From HK$6,653 HKD
$848 USD
As of October 31, 2026
Save HK$7,944 HKD (54%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: HK$19,434 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 D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1493017308. Listed at 20 retailers as of October 31, 2026, with a 119% 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
D
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1493017308
Dimensions6.36 × 4.56 × 2.86 mm
L/W Ratio1.39
Culet sizeNone
Key to symbols
Crystal
Top View
6.36 mm4.56 mm0.51 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1493017308
Side View
Table 62.0%CrownGirdle: MED-STKPavilionCulet: NoneDepth 62.8%

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 31
Current: HK$19,434 HKD|Low: HK$6,653 HKD|High: HK$19,732 HKD|Avg: HK$9,634 HKD|-1.5%
NZ Jewellers
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
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
November 1, 2026
Retailer 9HK$6,653 HKD
Retailer 16HK$6,669 HKD
Retailer 8HK$7,085 HKD
Retailer 5HK$7,218 HKD
Retailer 11HK$7,218 HKD
Retailer 6HK$7,304 HKD
Retailer 17HK$7,500 HKD
Retailer 7HK$8,003 HKD
Retailer 4HK$8,332 HKD
Retailer 18HK$8,434 HKD
Retailer 3HK$8,787 HKD
Retailer 19HK$8,787 HKD
Retailer 20HK$9,101 HKD
Retailer 13HK$9,343 HKD
Retailer 10HK$10,506 HKD
Retailer 14HK$10,611 HKD
Retailer 12HK$10,736 HKD
Retailer 15HK$12,302 HKD
Retailer 2HK$14,597 HKD
NZ JewellersHK$19,434 HKD

39 data points across 20 retailers

20 retailersHK$6,653 HKD to HK$14,597 HKD

B+
Cheapest Retailer
-
HK$6,653 HKD
$848 USD
Final sale: no returns
Retailer 2
-
HK$6,669 HKD
$850 USD
View
Price last confirmed 10 days ago
B+
Retailer 3
-
HK$7,085 HKD
$903 USD
View
B+
Retailer 4
-
HK$7,218 HKD
$920 USD
View
B+
Retailer 5
-
HK$7,218 HKD
$920 USD
View
B+
Retailer 6
-
HK$7,304 HKD
$931 USD
View
B+
Retailer 7
-
HK$7,500 HKD
$956 USD
View
B+
Retailer 8
-
HK$8,003 HKD
$1,020 USD
View
B+
Retailer 9
-
HK$8,332 HKD
$1,062 USD
View
B+
Retailer 10
-
HK$8,434 HKD
$1,075 USD
View
B+
Retailer 11
-
HK$8,787 HKD
$1,120 USD
View
B+
Retailer 12
-
HK$8,787 HKD
$1,120 USD
View
B+
Retailer 13
-
HK$9,101 HKD
$1,160 USD
View
B+
Retailer 14
-
HK$9,343 HKD
£938 GBP
View
B
Retailer 15
-
HK$10,506 HKD
$1,339 USD
View
B
Retailer 16
-
HK$10,611 HKD
€1,288 EUR
View
Retailer 17
-
HK$10,736 HKD
A$2,105 AUD
View
Price last confirmed 27 days ago
B
Retailer 18
-
HK$12,302 HKD
ZAR 25,330 ZAR
View
B
Retailer 19
-
HK$14,597 HKD
£1,465 GBP
View
Most Expensive
NZ Jewellers
3360d27d-0a55-485c-bf6c-69e6653dbffb · Oct 30
HK$19,434 HKD
$2,477 USD
View
Price under review
19 more retailers have this diamond
Prices start from HK$6,653 HKDSave up to HK$7,944 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$6,653 HKD