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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 €2,813 EUR
As of November 4, 2026
Save €2,537 EUR (47%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: €5,349 EUR 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 €2,813 to €5,349, a €2,537 spread on the same certified stone. Helzberg Diamonds lists it at €5,349. 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
Colour
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
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: €5,349 EUR|Low: €2,813 EUR|High: €5,349 EUR|Avg: €3,685 EUR|+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€2,813 EUR
Retailer 9€2,881 EUR
Retailer 6€2,889 EUR
Retailer 12€3,033 EUR
Retailer 13€3,038 EUR
Retailer 8€3,262 EUR
Retailer 5€3,387 EUR
Retailer 3€3,591 EUR
Retailer 4€3,647 EUR
Retailer 7€3,739 EUR
Retailer 2€3,903 EUR
Retailer 14€4,744 EUR
Retailer 10€5,047 EUR
Helzberg Diamonds€5,349 EUR

34 data points across 14 retailers

15 retailers€2,813 EUR to €5,349 EUR

A
Cheapest Retailer
-
€2,813 EUR
A
Retailer 2
-
€2,881 EUR
View
A
Retailer 3
-
€2,889 EUR
View
A
Retailer 4
-
€3,033 EUR
View
B+
Retailer 5
-
€3,038 EUR
View
B+
Retailer 6
-
€3,262 EUR
View
B+
Retailer 7
-
€3,387 EUR
View
B+
Retailer 8
-
€3,591 EUR
View
B+
Retailer 9
-
€3,647 EUR
View
B+
Retailer 10
-
€3,739 EUR
View
B
Retailer 11
-
€3,869 EUR
View
B+
Retailer 12
-
€3,903 EUR
View
B
Retailer 13
-
€4,744 EUR
View
B
Retailer 14
-
€5,047 EUR
View
Most Expensive
B
Helzberg Diamonds
XZRMLLIMLKKLJ · Nov 6
€5,349 EUR
$6,004 USD
View
14 more retailers have this diamond
Prices start from €2,813 EURSave up to €2,537 EUR

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
€2,813 EUR