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Marquise|Natural|GIA

1.21ct J SI1 Marquise Natural Diamond

GD • J/SI1 • GIA 2554338825

Certificate GIA 2554338825

Diamond specifications and retailer prices

From €2,315 EUR
As of October 31, 2026
Save €2,000 EUR (46%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: €4,315 EUR at Helzberg Diamonds · As of November 3, 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 J colour (near-colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 2554338825. Listed at 14 retailers as of October 31, 2026, with prices from €2,315 to €4,315, a €2,000 spread on the same certified stone. Helzberg Diamonds lists it at €4,315. 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
J
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle43.87°
Pavilion angle39.78°
OriginNatural
Grading LabGIA
CertificateGIA 2554338825
Dimensions9.83 × 5.39 × 3.60 mm
L/W Ratio1.82
Culet sizeNone
Top View
9.83 mm5.39 mm1.21 ctJ / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2554338825
Side View
Table 59.0%Crown 43.87°Girdle: STK-VTKPavilion 39.78°Culet: NoneDepth 66.6%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: €4,315 EUR|Low: €2,315 EUR|High: €4,586 EUR|Avg: €3,100 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
Retailer 13
November 5, 2026
Retailer 4€2,315 EUR
Retailer 2€2,372 EUR
Retailer 9€2,491 EUR
Retailer 5€2,519 EUR
Retailer 6€2,683 EUR
Retailer 13€2,734 EUR
Retailer 11€2,931 EUR
Retailer 3€2,967 EUR
Retailer 12€3,021 EUR
Retailer 8€3,026 EUR
Retailer 7€3,828 EUR
Retailer 10€4,075 EUR
Helzberg Diamonds€4,315 EUR

40 data points across 13 retailers

14 retailers€2,315 EUR to €4,315 EUR

B+
Cheapest Retailer
-
€2,315 EUR
B+
Retailer 2
-
€2,372 EUR
View
B+
Retailer 3
-
€2,491 EUR
View
B+
Retailer 4
-
€2,519 EUR
View
B+
Retailer 5
-
€2,683 EUR
View
B
Retailer 6
-
€2,734 EUR
View
B
Retailer 7
-
€2,931 EUR
View
B
Retailer 8
-
€2,967 EUR
View
B
Retailer 9
-
€3,021 EUR
View
B
Retailer 10
-
€3,026 EUR
View
B
Retailer 11
-
€3,283 EUR
View
B
Retailer 12
-
€3,828 EUR
View
B
Retailer 13
-
€4,075 EUR
View
Most Expensive
B
Helzberg Diamonds
XZRILLKJJOOIL · Nov 3
€4,315 EUR
$4,818 USD
View
13 more retailers have this diamond
Prices start from €2,315 EURSave up to €2,000 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.

B+
1.21ct Marquise
€2,315 EUR