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Radiant|Natural|GIA

1.21ct E SI1 Radiant Natural Diamond

EX • E/SI1 • GIA 2518450103

Certificate GIA 2518450103

Diamond specifications and retailer prices

From €3,448 EUR
As of November 6, 2026
Save €3,644 EUR (51%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: €7,093 EUR at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.21ct natural radiant diamond

This 1.21ct natural radiant sits in the classic one-carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2518450103. Listed at 14 retailers as of November 5, 2026, with prices from €3,448 to €7,093, a €3,644 spread on the same certified stone. NZ Jewellers lists it at €7,093. 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
E
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle44.29°
Pavilion angle30.5°
OriginNatural
Grading LabGIA
CertificateGIA 2518450103
Dimensions6.67 × 5.23 × 3.64 mm
L/W Ratio1.28
Top View
6.67 mm5.23 mm1.21 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2518450103
Side View
Table 65.0%Crown 44.29°Girdle: THK-VTKPavilion 30.5°Culet: NoneDepth 69.7%

Caratlytics Score

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

Price History

Last verified: Nov 6
Current: €7,093 EUR|Low: €3,448 EUR|High: €7,336 EUR|Avg: €4,732 EUR|-3.3%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
November 7, 2026
Retailer 5€3,448 EUR
Retailer 10€3,515 EUR
Retailer 4€3,649 EUR
Retailer 12€3,784 EUR
Retailer 2€4,047 EUR
Retailer 6€4,055 EUR
Retailer 3€4,192 EUR
Retailer 13€4,192 EUR
Retailer 7€4,324 EUR
Retailer 14€4,335 EUR
Retailer 8€4,374 EUR
Retailer 11€5,946 EUR
Retailer 9€6,466 EUR
NZ Jewellers€7,093 EUR

43 data points across 14 retailers

14 retailers€3,448 EUR to €7,093 EUR

B+
Cheapest Retailer
-
€3,448 EUR
B+
Retailer 2
-
€3,515 EUR
View
B+
Retailer 3
-
€3,649 EUR
View
B+
Retailer 4
-
€3,784 EUR
View
B+
Retailer 5
-
€4,047 EUR
View
B+
Retailer 6
-
€4,055 EUR
View
B+
Retailer 7
-
€4,192 EUR
View
B+
Retailer 8
-
€4,192 EUR
View
B
Retailer 9
-
€4,324 EUR
View
B
Retailer 10
-
€4,335 EUR
View
B+
Retailer 11
-
€4,374 EUR
View
B
Retailer 12
-
€5,946 EUR
View
B
Retailer 13
-
€6,466 EUR
View
Most Expensive
B
NZ Jewellers
c41f34da-ef32-4739-bab4-64ae197ec1fe · Nov 5
€7,093 EUR
$7,919 USD
View
13 more retailers have this diamond
Prices start from €3,448 EURSave up to €3,644 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 Radiant
€3,448 EUR