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Marquise|Natural|GIA

1.21ct I SI2 Marquise Natural Diamond

EX • I/SI2 • GIA 6555960270

Certificate GIA 6555960270

Diamond specifications and retailer prices

From €2,668 EUR
As of November 4, 2026
Save €2,406 EUR (47%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: €5,074 EUR at Helzberg Diamonds · As of November 6, 2026
View at Helzberg Diamonds

About this 1.21ct natural marquise diamond

This 1.21ct natural marquise sits in the classic one-carat band, graded I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6555960270. Listed at 12 retailers as of November 4, 2026, with prices from €2,668 to €5,074, a €2,406 spread on the same certified stone. Helzberg Diamonds lists it at €5,074. 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

1.21
Carat
I
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.95°
Pavilion angle37.98°
OriginNatural
Grading LabGIA
CertificateGIA 6555960270
Dimensions11.13 × 5.44 × 3.28 mm
L/W Ratio2.05
Culet sizeNone
Top View
11.13 mm5.44 mm1.21 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6555960270
Side View
Table 58.0%Crown 36.95°Girdle: ThickPavilion 37.98°Culet: NDepth 60.2%

Caratlytics Score

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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: €5,074 EUR|Low: €2,668 EUR|High: €5,392 EUR|Avg: €3,529 EUR|-5.9%
Helzberg Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 7, 2026
Retailer 8€2,668 EUR
Retailer 5€2,729 EUR
Retailer 7€2,733 EUR
Retailer 9€2,876 EUR
Retailer 2€3,113 EUR
Retailer 3€3,215 EUR
Retailer 10€3,386 EUR
Retailer 11€3,417 EUR
Retailer 12€3,481 EUR
Retailer 6€3,547 EUR
Retailer 4€4,761 EUR
Helzberg Diamonds€5,074 EUR

38 data points across 12 retailers

12 retailers€2,668 EUR to €5,074 EUR

A
Cheapest Retailer
-
€2,668 EUR
A
Retailer 2
-
€2,729 EUR
View
A
Retailer 3
-
€2,733 EUR
View
A
Retailer 4
-
€2,876 EUR
View
B+
Retailer 5
-
€3,113 EUR
View
B+
Retailer 6
-
€3,215 EUR
View
B+
Retailer 7
-
€3,386 EUR
View
B+
Retailer 8
-
€3,417 EUR
View
B+
Retailer 9
-
€3,481 EUR
View
B+
Retailer 10
-
€3,547 EUR
View
B
Retailer 11
-
€4,761 EUR
View
Most Expensive
B
Helzberg Diamonds
XZRMLLLPMGING · Nov 6
€5,074 EUR
$5,665 USD
View
11 more retailers have this diamond
Prices start from €2,668 EURSave up to €2,406 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
1.21ct Marquise
€2,668 EUR