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Marquise|Natural|GIA

0.51ct I SI1 Marquise Natural Diamond

EX • I/SI1 • GIA 3555975462

Certificate GIA 3555975462

Diamond specifications and retailer prices

From $594 CAD
$425 USD
As of November 2, 2026
Save $1,933 CAD (76%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $2,526 CAD at NZ Jewellers · As of October 30, 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 SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 3555975462. Listed at 12 retailers as of October 30, 2026, with prices from $594 to $2,526, a $1,933 spread on the same certified stone. NZ Jewellers lists it at $2,526. 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
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 3555975462
Dimensions4.06 × 9.29 × 2.43 mm
L/W Ratio2.29
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Feather, Crystal
Top View
4.06 mm9.29 mm0.51 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceMedium
CertificateGIA 3555975462
Side View
Table 63.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 59.9%

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 2
Current: $2,526 CAD|Low: $583 CAD|High: $2,700 CAD|Avg: $936 CAD|-6.4%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 2, 2026
Retailer 7$594 CAD
Retailer 8$644 CAD
Retailer 3$710 CAD
Retailer 11$710 CAD
Retailer 12$720 CAD
Retailer 2$743 CAD
Retailer 9$743 CAD
Retailer 10$755 CAD
Retailer 5$790 CAD
Retailer 6$802 CAD
Retailer 4$1,059 CAD
NZ Jewellers$2,526 CAD

36 data points across 12 retailers

12 retailers$594 CAD to $2,526 CAD

A
Cheapest Retailer
-
$594 CAD
$425 USD
Final sale: no returns
A
Retailer 2
-
$644 CAD
$461 USD
View
A
Retailer 3
-
$710 CAD
$508 USD
View
A
Retailer 4
-
$710 CAD
$508 USD
View
A
Retailer 5
-
$720 CAD
SGD 696 SGD
View
A
Retailer 6
-
$743 CAD
$532 USD
View
A
Retailer 7
-
$743 CAD
$532 USD
View
A
Retailer 8
-
$755 CAD
$540 USD
View
A
Retailer 9
-
$790 CAD
£445 GBP
View
A
Retailer 10
-
$802 CAD
£452 GBP
View
Retailer 11
-
$1,059 CAD
A$1,166 AUD
View
Price last confirmed 29 days ago
Most Expensive
B
NZ Jewellers
88376718-b8b2-4f68-9965-981372ec3c26 · Oct 30
$2,526 CAD
$1,808 USD
View
11 more retailers have this diamond
Prices start from $594 CADSave up to $1,933 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
$594 CAD