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Marquise|Natural|GIA

0.51ct I SI2 Marquise Natural Diamond

GD • I/SI2 • GIA 5546310673

Certificate GIA 5546310673

Diamond specifications and retailer prices

From $871 CAD
As of November 4, 2026
Save $1,189 CAD (58%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $3,532 CAD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 0.51ct natural marquise diamond

This 0.51ct natural marquise sits in the half to three-quarter carat band, graded I colour (near-colourless) and SI2 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 5546310673. Listed at 22 retailers as of November 4, 2026, with a 137% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

0.51
Carat
I
Color
SI2
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 5546310673
Dimensions8.00 × 4.13 × 2.61 mm
L/W Ratio1.94
Top View
8.00 mm4.13 mm0.51 ctI / SI2
OriginNatural
CutGood
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 5546310673
Side View
Table 62.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 63.2%

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 4
Current: $1,338 CAD|Low: $871 CAD|High: $2,087 CAD|Avg: $1,368 CAD|-1.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 5$871 CAD
Retailer 6$1,059 CAD
Retailer 7$1,167 CAD
Retailer 1$1,338 CAD
Retailer 2$1,340 CAD
Retailer 4$1,591 CAD
Retailer 3$2,059 CAD

44 data points across 7 retailers

22 retailers$871 CAD to $2,059 CAD

B+
Cheapest Retailer
-
$871 CAD
Final sale: no returns
B+
Retailer 2
-
$937 CAD
View
B+
Retailer 3
-
$1,020 CAD
View
Retailer 4
-
$1,020 CAD
View
Price last confirmed 8 days ago
B
Retailer 5
-
$1,032 CAD
View
B
Retailer 6
-
$1,059 CAD
View
B
Retailer 7
-
$1,066 CAD
View
B
Retailer 8
-
$1,159 CAD
View
B
Retailer 9
-
$1,167 CAD
View
B
Retailer 10
-
$1,170 CAD
View
B
Retailer 11
-
$1,177 CAD
View
B
Retailer 12
-
$1,256 CAD
View
B
Retailer 13
-
$1,266 CAD
View
B
Retailer 14
-
$1,266 CAD
View
B
Retailer 15
-
$1,308 CAD
View
B
Retailer 16
-
$1,338 CAD
View
B
Retailer 17
-
$1,340 CAD
View
B
Retailer 18
-
$1,378 CAD
View
B
Retailer 19
-
$1,591 CAD
View
C
Retailer 20
-
$1,809 CAD
View
C
Retailer 21
-
$2,059 CAD
View
Most Expensive
NZ Jewellers
24b02595-8c7f-485d-a676-2f1c4e4f1c4a · Nov 5
$3,532 CAD
$2,511 USD
View
Price under review
21 more retailers have this diamond
Prices start from $871 CADSave up to $1,189 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 Marquise
$871 CAD