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Marquise|Natural|GIA

1.21ct I SI2 Marquise Natural Diamond

GD • I/SI2 • GIA 6551273825

Certificate GIA 6551273825

Diamond specifications and retailer prices

From €2,333 EUR
As of November 5, 2026
Save €1,913 EUR (45%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: €4,246 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 standard cut grade stated by the retailer rather than the lab and certified by GIA 6551273825. Listed at 12 retailers as of November 5, 2026, with prices from €2,333 to €4,246, a €1,913 spread on the same certified stone. Helzberg Diamonds lists it at €4,246. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

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

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle43.52°
Pavilion angle37.98°
OriginNatural
Grading LabGIA
CertificateGIA 6551273825
Dimensions9.85 × 5.41 × 3.52 mm
L/W Ratio1.82
Culet sizeNone
Top View
9.85 mm5.41 mm1.21 ctI / SI2
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6551273825
Side View
Table 60.0%Crown 43.52°Girdle: MED-VTKPavilion 37.98°Culet: NoneDepth 65.1%

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 5
Current: €4,246 EUR|Low: €2,278 EUR|High: €4,603 EUR|Avg: €3,128 EUR|-7.7%
Helzberg Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 7, 2026
Retailer 7€2,333 EUR
Retailer 4€2,428 EUR
Retailer 8€2,469 EUR
Retailer 2€2,631 EUR
Retailer 3€2,689 EUR
Retailer 5€2,721 EUR
Retailer 10€2,887 EUR
Retailer 6€2,968 EUR
Retailer 11€2,978 EUR
Retailer 9€4,005 EUR
Helzberg Diamonds€4,246 EUR

44 data points across 11 retailers

12 retailers€2,333 EUR to €4,246 EUR

A
Cheapest Retailer
-
€2,333 EUR
A
Retailer 2
-
€2,428 EUR
View
B+
Retailer 3
-
€2,469 EUR
View
B+
Retailer 4
-
€2,631 EUR
View
B+
Retailer 5
-
€2,689 EUR
View
B+
Retailer 6
-
€2,721 EUR
View
B+
Retailer 7
-
€2,887 EUR
View
B+
Retailer 8
-
€2,968 EUR
View
B+
Retailer 9
-
€2,978 EUR
View
B
Retailer 10
-
€3,231 EUR
View
B
Retailer 11
-
€4,005 EUR
View
Most Expensive
B
Helzberg Diamonds
XZRMLLHINJOIL · Nov 6
€4,246 EUR
$4,741 USD
View
11 more retailers have this diamond
Prices start from €2,333 EURSave up to €1,913 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
€2,333 EUR