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Marquise|Natural|GIA

1.00ct E SI1 Marquise Natural Diamond

EX • E/SI1 • GIA 6552654453

Certificate GIA 6552654453

Diamond specifications and retailer prices

From $4,409 CAD
As of November 4, 2026
Save $3,976 CAD (47%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $8,385 CAD at Helzberg Diamonds · As of November 6, 2026
View at Helzberg Diamonds

About this 1ct natural marquise diamond

This 1ct natural marquise sits in the classic one-carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6552654453. Listed at 15 retailers as of November 4, 2026, with prices from $4,409 to $8,385, a $3,976 spread on the same certified stone. Helzberg Diamonds lists it at $8,385. 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

1.00
Carat
E
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle35.79°
Pavilion angle41.05°
OriginNatural
Grading LabGIA
CertificateGIA 6552654453
Dimensions10.44 × 5.06 × 3.18 mm
L/W Ratio2.06
Culet sizeNone
Top View
10.44 mm5.06 mm1.00 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6552654453
Side View
Table 58.0%Crown 35.79°Girdle: MED-VTKPavilion 41.05°Culet: NoneDepth 62.8%

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 4
Current: $8,385 CAD|Low: $4,409 CAD|High: $8,385 CAD|Avg: $5,768 CAD|+4.0%
Helzberg Diamonds
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 6, 2026
Retailer 11$4,409 CAD
Retailer 9$4,517 CAD
Retailer 6$4,529 CAD
Retailer 12$4,754 CAD
Retailer 13$4,762 CAD
Retailer 7$5,113 CAD
Retailer 5$5,310 CAD
Retailer 3$5,630 CAD
Retailer 4$5,716 CAD
Retailer 2$5,862 CAD
Retailer 8$6,119 CAD
Retailer 14$7,437 CAD
Retailer 10$7,912 CAD
Helzberg Diamonds$8,385 CAD

35 data points across 14 retailers

15 retailers$4,409 CAD to $8,385 CAD

A
Cheapest Retailer
-
$4,409 CAD
A
Retailer 2
-
$4,517 CAD
View
A
Retailer 3
-
$4,529 CAD
View
A
Retailer 4
-
$4,754 CAD
View
B+
Retailer 5
-
$4,762 CAD
View
B+
Retailer 6
-
$5,113 CAD
View
B+
Retailer 7
-
$5,310 CAD
View
B+
Retailer 8
-
$5,630 CAD
View
B+
Retailer 9
-
$5,716 CAD
View
B+
Retailer 10
-
$5,862 CAD
View
B
Retailer 11
-
$6,064 CAD
View
B+
Retailer 12
-
$6,119 CAD
View
B
Retailer 13
-
$7,437 CAD
View
B
Retailer 14
-
$7,912 CAD
View
Most Expensive
B
Helzberg Diamonds
XZRMLLIMLKKLJ · Nov 6
$8,385 CAD
$6,004 USD
View
14 more retailers have this diamond
Prices start from $4,409 CADSave up to $3,976 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
1.00ct Marquise
$4,409 CAD