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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 €2,305 EUR
$2,586 USD
As of October 31, 2026
Save €2,079 EUR (47%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: €4,385 EUR at Helzberg Diamonds · As of November 1, 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 €2,305 to €4,385, a €2,079 spread on the same certified stone. Helzberg Diamonds lists it at €4,385. 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
Color
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: €4,385 EUR|Low: €2,305 EUR|High: €4,658 EUR|Avg: €3,171 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 2, 2026
Retailer 8€2,305 EUR
Retailer 12€2,349 EUR
Retailer 10€2,494 EUR
Retailer 9€2,507 EUR
Retailer 7€2,697 EUR
Retailer 4€2,778 EUR
Retailer 2€2,954 EUR
Retailer 13€2,974 EUR
Retailer 3€3,061 EUR
Retailer 6€3,079 EUR
Retailer 11€3,888 EUR
Retailer 5€4,135 EUR
Helzberg Diamonds€4,385 EUR

43 data points across 13 retailers

14 retailers€2,305 EUR to €4,385 EUR

B+
Cheapest Retailer
-
€2,305 EUR
$2,586 USD
B+
Retailer 2
-
€2,349 EUR
SGD 3,560 SGD
View
B+
Retailer 3
-
€2,494 EUR
$2,797 USD
View
B+
Retailer 4
-
€2,507 EUR
$2,812 USD
View
B
Retailer 5
-
€2,697 EUR
£2,382 GBP
View
B
Retailer 6
-
€2,778 EUR
SGD 4,211 SGD
View
B
Retailer 7
-
€2,954 EUR
$3,313 USD
View
B
Retailer 8
-
€2,974 EUR
$3,336 USD
View
B
Retailer 9
-
€3,061 EUR
$3,433 USD
View
B
Retailer 10
-
€3,079 EUR
View
B
Retailer 11
-
€3,269 EUR
$3,666 USD
View
B
Retailer 12
-
€3,888 EUR
$4,361 USD
View
B
Retailer 13
-
€4,135 EUR
$4,637 USD
View
Most Expensive
C
Helzberg Diamonds
XZRILLKJJOOIL · Nov 1
€4,385 EUR
$4,918 USD
View
13 more retailers have this diamond
Prices start from €2,305 EURSave up to €2,079 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
€2,305 EUR