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Marquise|Natural|GIA

0.51ct I SI1 Marquise Natural Diamond

EX • I/SI1 • GIA 6562612974

Certificate GIA 6562612974

Diamond specifications and retailer prices

From $636 CAD
$455 USD
As of November 2, 2026
Save $2,064 CAD (76%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $2,700 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 6562612974. Listed at 14 retailers as of October 30, 2026, with prices from $636 to $2,700, a $2,064 spread on the same certified stone. NZ Jewellers lists it at $2,700. 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 6562612974
Dimensions8.00 × 4.23 × 2.67 mm
L/W Ratio1.89
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Feather, Crystal
Top View
8.00 mm4.23 mm0.51 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceMedium
CertificateGIA 6562612974
Side View
Table 57.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 63.0%

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: $2,700 CAD|Low: $636 CAD|High: $2,700 CAD|Avg: $1,004 CAD|+19.7%
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
November 2, 2026
Retailer 11$636 CAD
Retailer 13$689 CAD
Retailer 12$713 CAD
Retailer 2$742 CAD
Retailer 6$759 CAD
Retailer 5$765 CAD
Retailer 8$795 CAD
Retailer 14$795 CAD
Retailer 3$804 CAD
Retailer 9$846 CAD
Retailer 10$861 CAD
Retailer 4$950 CAD
Retailer 7$1,592 CAD
NZ Jewellers$2,700 CAD

13 data points across 14 retailers

14 retailers$636 CAD to $2,700 CAD

A
Cheapest Retailer
-
$636 CAD
$455 USD
Final sale: no returns
A
Retailer 2
-
$689 CAD
$493 USD
View
A
Retailer 3
-
$713 CAD
$510 USD
View
A
Retailer 4
-
$742 CAD
$531 USD
View
A
Retailer 5
-
$759 CAD
$543 USD
View
A
Retailer 6
-
$765 CAD
SGD 740 SGD
View
A
Retailer 7
-
$795 CAD
$569 USD
View
A
Retailer 8
-
$795 CAD
$569 USD
View
A
Retailer 9
-
$804 CAD
$575 USD
View
A
Retailer 10
-
$846 CAD
£477 GBP
View
A
Retailer 11
-
$861 CAD
£485 GBP
View
B+
Retailer 12
-
$950 CAD
$680 USD
View
B
Retailer 13
-
$1,592 CAD
£897 GBP
View
Most Expensive
C
NZ Jewellers
0b52d66a-7e99-4f9c-a014-51de6eea188d · Oct 30
$2,700 CAD
$1,932 USD
View
13 more retailers have this diamond
Prices start from $636 CADSave up to $2,064 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
$636 CAD