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Marquise|Natural|GIA

0.51ct K SI1 Marquise Natural Diamond

EX • K/SI1 • GIA 7566603273

Certificate GIA 7566603273

Diamond specifications and retailer prices

From $575 CAD
As of November 6, 2026
Save $604 CAD (51%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $1,179 CAD at Frank Darling · As of November 6, 2026
View at Frank Darling

About this 0.51ct natural marquise diamond

This 0.51ct natural marquise sits in the half to three-quarter carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 7566603273. Listed at 11 retailers as of November 6, 2026, with prices from $575 to $1,179, a $604 spread on the same certified stone. Frank Darling lists it at $1,179. 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
K
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle36.24°
Pavilion angle41.54°
OriginNatural
Grading LabGIA
CertificateGIA 7566603273
Dimensions8.13 × 4.12 × 2.65 mm
L/W Ratio1.97
Culet sizeNone
Top View
8.13 mm4.12 mm0.51 ctK / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 7566603273
Side View
Table 58.0%Crown 36.24°Girdle: THN-VTKPavilion 41.54°Culet: NoneDepth 64.4%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $1,179 CAD|Low: $575 CAD|High: $1,179 CAD|Avg: $768 CAD
Frank Darling
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 8$575 CAD
Retailer 10$601 CAD
Retailer 6$626 CAD
Retailer 11$651 CAD
Retailer 5$690 CAD
Retailer 3$747 CAD
Retailer 9$804 CAD
Retailer 2$844 CAD
Retailer 7$862 CAD
Retailer 4$987 CAD
Frank Darling$1,179 CAD

23 data points across 11 retailers

11 retailers$575 CAD to $1,179 CAD

A
Cheapest Retailer
-
$575 CAD
A
Retailer 2
-
$601 CAD
View
A
Retailer 3
-
$626 CAD
View
A
Retailer 4
-
$651 CAD
View
A
Retailer 5
-
$690 CAD
View
B+
Retailer 6
-
$747 CAD
View
B+
Retailer 7
-
$804 CAD
View
B+
Retailer 8
-
$844 CAD
View
B+
Retailer 9
-
$862 CAD
View
B+
Retailer 10
-
$987 CAD
View
Most Expensive
B
Frank Darling
2702647HK · Nov 6
$1,179 CAD
$844 USD
View
10 more retailers have this diamond
Prices start from $575 CADSave up to $604 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
$575 CAD