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Marquise|Natural|GIA

1.00ct E SI1 Marquise Natural Diamond

EX • E/SI1 • GIA 1555023523

Certificate GIA 1555023523

Diamond specifications and retailer prices

From $3,933 CAD
As of November 4, 2026
Save $4,670 CAD (54%) vs most expensive(unlock to see where)
25 retailers carry this diamond
Most expensive: $9,617 CAD at NZ Jewellers · As of September 29, 2026
View at NZ Jewellers

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 1555023523. Listed at 25 retailers as of November 4, 2026, with a 119% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 1555023523
Dimensions9.87 × 5.19 × 3.24 mm
L/W Ratio1.90
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Feather, Crystal, Cloud, Cavity, Needle, Indented Natural, Natural
Top View
9.87 mm5.19 mm1.00 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 1555023523
Side View
Table 62.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 62.4%

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 4
Current: $5,004 CAD|Low: $3,933 CAD|High: $8,720 CAD|Avg: $5,756 CAD|-1.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 6, 2026
Retailer 13$3,933 CAD
Retailer 8$4,088 CAD
Retailer 9$4,605 CAD
Retailer 5$4,666 CAD
Retailer 2$4,804 CAD
Retailer 1$5,004 CAD
Retailer 4$5,159 CAD
Retailer 6$5,307 CAD
Retailer 12$5,357 CAD
Retailer 11$6,015 CAD
Retailer 7$6,297 CAD
Retailer 3$7,990 CAD
Retailer 10$8,603 CAD

24 data points across 13 retailers

25 retailers$3,933 CAD to $8,603 CAD

A
Cheapest Retailer
-
$3,933 CAD
A
Retailer 2
-
$4,088 CAD
View
A
Retailer 3
-
$4,605 CAD
View
A
Retailer 4
-
$4,653 CAD
View
A
Retailer 5
-
$4,666 CAD
View
A
Retailer 6
-
$4,761 CAD
View
Final sale: no returns
A
Retailer 7
-
$4,804 CAD
View
B+
Retailer 8
-
$4,804 CAD
View
B+
Retailer 9
-
$4,957 CAD
View
A
Retailer 10
-
$5,004 CAD
View
Retailer 11
-
$5,159 CAD
View
Price last confirmed 8 days ago
Retailer 12
-
$5,159 CAD
View
Price last confirmed 21 days ago
B+
Retailer 13
-
$5,307 CAD
View
B+
Retailer 14
-
$5,357 CAD
View
B+
Retailer 15
-
$5,362 CAD
View
B+
Retailer 16
-
$5,363 CAD
View
B+
Retailer 17
-
$5,433 CAD
View
Retailer 18
-
$5,521 CAD
View
Price last confirmed 38 days ago
Retailer 19
-
$5,606 CAD
View
Price last confirmed 29 days ago
B+
Retailer 20
-
$6,015 CAD
View
B+
Retailer 21
-
$6,297 CAD
View
Retailer 22
-
$6,370 CAD
View
Price last confirmed 38 days ago
Retailer 23
-
$7,990 CAD
View
Price last confirmed 9 days ago
B
Retailer 24
-
$8,603 CAD
View
Most Expensive
NZ Jewellers
59feb36f-121a-4f76-9f73-37702296f960 · Sep 29
$9,617 CAD
$6,886 USD
View
Price last confirmed 37 days ago
24 more retailers have this diamond
Prices start from $3,933 CADSave up to $4,670 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
$3,933 CAD