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Radiant|Natural|GIA

1.21ct J SI2 Radiant Natural Diamond

EX • J/SI2 • GIA 1555663793

Certificate GIA 1555663793

Diamond specifications and retailer prices

From €1,514 EUR
$1,698 USD
As of October 28, 2026
Save €1,199 EUR (44%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: €2,713 EUR at Helzberg Diamonds · As of October 28, 2026
View at Helzberg Diamonds

About this 1.21ct natural radiant diamond

This 1.21ct natural radiant sits in the classic one-carat band, graded J 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 1555663793. Listed at 10 retailers as of October 28, 2026, with prices from €1,514 to €2,713, a €1,199 spread on the same certified stone. Helzberg Diamonds lists it at €2,713. 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
J
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 1555663793
Dimensions7.41 × 5.28 × 3.45 mm
L/W Ratio1.40
Culet sizeNone
Top View
7.41 mm5.28 mm1.21 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1555663793
Side View
Table 68.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 65.4%

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: Oct 28
Current: €2,713 EUR|Low: €1,514 EUR|High: €2,940 EUR|Avg: €2,096 EUR|-7.7%
Helzberg Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 29, 2026
Retailer 4€1,514 EUR
Retailer 5€1,514 EUR
Retailer 9€1,648 EUR
Retailer 6€1,664 EUR
Retailer 7€1,816 EUR
Retailer 3€1,899 EUR
Retailer 8€1,980 EUR
Retailer 2€2,133 EUR
Retailer 10€2,492 EUR
Helzberg Diamonds€2,713 EUR

37 data points across 10 retailers

10 retailers€1,514 EUR to €2,713 EUR

A
Cheapest Retailer
-
€1,514 EUR
$1,698 USD
A
Retailer 2
-
€1,514 EUR
$1,698 USD
View
A
Retailer 3
-
€1,648 EUR
SGD 2,498 SGD
View
A
Retailer 4
-
€1,664 EUR
£1,469 GBP
View
B+
Retailer 5
-
€1,816 EUR
$2,037 USD
View
B+
Retailer 6
-
€1,899 EUR
$2,130 USD
View
B+
Retailer 7
-
€1,980 EUR
$2,221 USD
View
B+
Retailer 8
-
€2,133 EUR
View
B+
Retailer 9
-
€2,492 EUR
$2,795 USD
View
Most Expensive
B
Helzberg Diamonds
XZRHLLLMMJNPJ · Oct 28
€2,713 EUR
$3,043 USD
View
9 more retailers have this diamond
Prices start from €1,514 EURSave up to €1,199 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 Radiant
€1,514 EUR