Oval|Natural|GIA

0.51ct D SI1 Oval Natural Diamond

EX • D/SI1 • GIA 5566129731

Certificate GIA 5566129731

Diamond specifications and retailer prices

From $876 CAD
HK$4,900 HKD
As of October 30, 2026
Save $1,262 CAD (59%) vs most expensive(unlock to see where)
25 retailers carry this diamond
Most expensive: $3,639 CAD 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 5566129731. Listed at 25 retailers as of October 29, 2026, with a 144% 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
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
Crown angle34.5°
Pavilion angle38.6°
OriginNatural
Grading LabGIA
CertificateGIA 5566129731
Dimensions6.44 × 4.59 × 2.78 mm
L/W Ratio1.40
Culet sizeNone
Key to symbols
Crystal
Top View
6.44 mm4.59 mm0.51 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 5566129731
Side View
Table 64.0%Crown 34.5°Girdle: MED-THKPavilion 38.6°Culet: NoneDepth 60.5%

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: Oct 30
Current: $3,639 CAD|Low: $876 CAD|High: $3,639 CAD|Avg: $1,439 CAD
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
Retailer 21
Retailer 22
Retailer 23
October 31, 2026
Retailer 10$876 CAD
Retailer 2$879 CAD
Retailer 6$1,035 CAD
Retailer 3$1,062 CAD
Retailer 8$1,071 CAD
Retailer 11$1,112 CAD
Retailer 12$1,161 CAD
Retailer 22$1,161 CAD
Retailer 9$1,176 CAD
Retailer 23$1,206 CAD
Retailer 15$1,226 CAD
Retailer 4$1,340 CAD
Retailer 21$1,346 CAD
Retailer 5$1,390 CAD
Retailer 13$1,397 CAD
Retailer 19$1,429 CAD
Retailer 14$1,553 CAD
Retailer 7$1,616 CAD
Retailer 17$1,638 CAD
Retailer 16$1,661 CAD
Retailer 18$1,791 CAD
Retailer 20$2,138 CAD
NZ Jewellers$3,639 CAD

22 data points across 23 retailers

25 retailers$876 CAD to $2,138 CAD

A
Cheapest Retailer
-
$876 CAD
HK$4,900 HKD
A
Retailer 2
-
$879 CAD
₹59,934 INR
View
A
Retailer 3
-
$1,035 CAD
$741 USD
View
Retailer 4
-
$1,062 CAD
$760 USD
View
Price last confirmed 10 days ago
A
Retailer 5
-
$1,071 CAD
$767 USD
View
Final sale: no returns
B+
Retailer 6
-
$1,091 CAD
A$1,202 AUD
View
A
Retailer 7
-
$1,112 CAD
SGD 1,076 SGD
View
B+
Retailer 8
-
$1,161 CAD
$831 USD
View
B+
Retailer 9
-
$1,161 CAD
$831 USD
View
B+
Retailer 10
-
$1,176 CAD
$842 USD
View
B+
Retailer 11
-
$1,206 CAD
$863 USD
View
B+
Retailer 12
-
$1,226 CAD
SGD 1,186 SGD
View
B+
Retailer 13
-
$1,340 CAD
$959 USD
View
B+
Retailer 14
-
$1,346 CAD
$964 USD
View
B
Retailer 15
-
$1,390 CAD
$995 USD
View
B+
Retailer 16
-
$1,397 CAD
£788 GBP
View
B+
Retailer 17
-
$1,429 CAD
£805 GBP
View
B+
Retailer 18
-
$1,553 CAD
$1,112 USD
View
B
Retailer 19
-
$1,616 CAD
$1,157 USD
View
B+
Retailer 20
-
$1,638 CAD
€1,117 EUR
View
B
Retailer 21
-
$1,661 CAD
$1,189 USD
View
B
Retailer 22
-
$1,791 CAD
ZAR 20,716 ZAR
View
Retailer 23
-
$1,810 CAD
A$1,993 AUD
View
Price last confirmed 27 days ago
B
Retailer 24
-
$2,138 CAD
£1,205 GBP
View
Most Expensive
NZ Jewellers
4602bb7f-0c81-4db7-90e5-a0a5de6a7b7c · Oct 30
$3,639 CAD
$2,605 USD
View
Price under review
24 more retailers have this diamond
Prices start from $876 CADSave up to $1,262 CAD

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
0.51ct Oval
$876 CAD