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Oval|Natural|GIA

0.51ct D SI1 Oval Natural Diamond

EX • D/SI1 • GIA 2518352958

Certificate GIA 2518352958

Diamond specifications and retailer prices

From $1,261 CAD
$901 USD
As of October 29, 2026
Save $1,507 CAD (54%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $3,680 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 2518352958. Listed at 16 retailers as of October 26, 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
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
Crown angle39.02°
Pavilion angle39.28°
OriginNatural
Grading LabGIA
CertificateGIA 2518352958
Dimensions6.56 × 4.41 × 2.72 mm
L/W Ratio1.49
Top View
6.56 mm4.41 mm0.51 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 2518352958
Side View
Table 58.0%Crown 39.02°Girdle: STK-THKPavilion 39.28°Culet: NoneDepth 61.8%

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 29
Current: $3,680 CAD|Low: $1,051 CAD|High: $3,680 CAD|Avg: $1,847 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
October 30, 2026
Retailer 11$1,261 CAD
Retailer 10$1,338 CAD
Retailer 6$1,342 CAD
Retailer 14$1,355 CAD
Retailer 3$1,367 CAD
Retailer 5$1,367 CAD
Retailer 13$1,419 CAD
Retailer 4$1,577 CAD
Retailer 2$1,780 CAD
Retailer 12$1,973 CAD
Retailer 7$2,113 CAD
Retailer 8$2,323 CAD
Retailer 9$2,768 CAD
NZ Jewellers$3,680 CAD

45 data points across 14 retailers

16 retailers$1,261 CAD to $2,768 CAD

B+
Cheapest Retailer
-
$1,261 CAD
$901 USD
Final sale: no returns
B+
Retailer 2
-
$1,338 CAD
$956 USD
View
B+
Retailer 3
-
$1,342 CAD
$959 USD
View
B+
Retailer 4
-
$1,344 CAD
$960 USD
View
B+
Retailer 5
-
$1,355 CAD
$968 USD
View
B+
Retailer 6
-
$1,367 CAD
$977 USD
View
B+
Retailer 7
-
$1,367 CAD
$977 USD
View
B+
Retailer 8
-
$1,419 CAD
$1,014 USD
View
B+
Retailer 9
-
$1,577 CAD
$1,127 USD
View
B
Retailer 10
-
$1,780 CAD
£1,001 GBP
View
Retailer 11
-
$1,973 CAD
A$2,168 AUD
View
Price last confirmed 26 days ago
B
Retailer 12
-
$2,113 CAD
€1,438 EUR
View
B
Retailer 13
-
$2,323 CAD
ZAR 26,816 ZAR
View
B
Retailer 14
-
$2,446 CAD
View
B
Retailer 15
-
$2,768 CAD
£1,557 GBP
View
Most Expensive
NZ Jewellers
07e8e85c-3b95-4719-b79a-7ebc14a03306 · Oct 30
$3,680 CAD
$2,629 USD
View
Price under review
15 more retailers have this diamond
Prices start from $1,261 CADSave up to $1,507 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.

B+
0.51ct Oval
$1,261 CAD