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Marquise|Natural|GIA

0.51ct I SI2 Marquise Natural Diamond

EX • I/SI2 • GIA 1553998649

Certificate GIA 1553998649

Diamond specifications and retailer prices

From $679 CAD
As of November 6, 2026
Save $1,863 CAD (73%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $2,542 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 top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1553998649. Listed at 15 retailers as of November 5, 2026, with prices from $679 to $2,542, a $1,863 spread on the same certified stone. NZ Jewellers lists it at $2,542. 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
Color
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 1553998649
Dimensions8.72 × 4.07 × 2.52 mm
L/W Ratio2.14
Key to symbols
Twinning Wisp, Feather
Top View
8.72 mm4.07 mm0.51 ctI / SI2
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceMedium
CertificateGIA 1553998649
Side View
Table 55.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 61.9%

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: Nov 6
Current: $2,542 CAD|Low: $661 CAD|High: $2,542 CAD|Avg: $1,069 CAD|+3.6%
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
November 6, 2026
Retailer 4$679 CAD
Retailer 3$747 CAD
Retailer 9$810 CAD
Retailer 15$824 CAD
Retailer 6$844 CAD
Retailer 10$873 CAD
Retailer 14$873 CAD
Retailer 7$936 CAD
Retailer 13$936 CAD
Retailer 2$962 CAD
Retailer 8$985 CAD
Retailer 5$997 CAD
Retailer 11$1,195 CAD
Retailer 12$1,870 CAD
NZ Jewellers$2,542 CAD

30 data points across 15 retailers

15 retailers$679 CAD to $2,542 CAD

A
Cheapest Retailer
-
$679 CAD
A
Retailer 2
-
$747 CAD
View
Final sale: no returns
A
Retailer 3
-
$810 CAD
View
Retailer 4
-
$824 CAD
View
Price last confirmed 19 days ago
Retailer 5
-
$844 CAD
View
Price last confirmed 10 days ago
B+
Retailer 6
-
$873 CAD
View
Retailer 7
-
$873 CAD
View
Price last confirmed 8 days ago
B+
Retailer 8
-
$936 CAD
View
Retailer 9
-
$936 CAD
View
Price last confirmed 19 days ago
B+
Retailer 10
-
$962 CAD
View
B+
Retailer 11
-
$985 CAD
View
B+
Retailer 12
-
$997 CAD
View
B
Retailer 13
-
$1,195 CAD
View
B
Retailer 14
-
$1,870 CAD
View
Most Expensive
B
NZ Jewellers
8c553993-763c-4d33-980b-770d3b9d2d4f · Nov 5
$2,542 CAD
$1,820 USD
View
14 more retailers have this diamond
Prices start from $679 CADSave up to $1,863 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 Marquise
$679 CAD