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Radiant|Natural|GIA

1.21ct J SI1 Radiant Natural Diamond

EX • J/SI1 • GIA 2557272200

Certificate GIA 2557272200

Diamond specifications and retailer prices

From €1,536 EUR
As of November 6, 2026
Save €2,042 EUR (57%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: €4,293 EUR at NZ Jewellers · As of October 17, 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 J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2557272200. Listed at 18 retailers as of November 6, 2026, with a 133% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2557272200
Dimensions7.08 × 5.46 × 3.67 mm
L/W Ratio1.30
Girdle conditionPolished
Culet sizeNone
Key to symbols
Feather, Crystal, Cloud, Cavity, Needle
Top View
7.08 mm5.46 mm1.21 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2557272200
Side View
Table 68.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 67.1%

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 6
Current: €3,578 EUR|Low: €1,536 EUR|High: €3,641 EUR|Avg: €2,378 EUR|-1.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 7, 2026
Retailer 7€1,536 EUR
Retailer 3€1,613 EUR
Retailer 8€1,895 EUR
Retailer 4€2,143 EUR
Retailer 2€2,231 EUR
Retailer 6€2,506 EUR
Retailer 9€2,528 EUR
Retailer 5€2,549 EUR
Retailer 1€3,578 EUR

36 data points across 9 retailers

18 retailers€1,536 EUR to €3,578 EUR

A
Cheapest Retailer
-
€1,536 EUR
A
Retailer 2
-
€1,613 EUR
View
B+
Retailer 3
-
€1,895 EUR
View
Final sale: no returns
B+
Retailer 4
-
€1,925 EUR
View
B+
Retailer 5
-
€1,926 EUR
View
Retailer 6
-
€2,053 EUR
View
Price last confirmed 22 days ago
Retailer 7
-
€2,053 EUR
View
Price last confirmed 20 days ago
B+
Retailer 8
-
€2,143 EUR
View
Retailer 9
-
€2,148 EUR
View
Price last confirmed 22 days ago
B+
Retailer 10
-
€2,177 EUR
View
B
Retailer 11
-
€2,228 EUR
View
B+
Retailer 12
-
€2,231 EUR
View
Retailer 13
-
€2,369 EUR
View
Price last confirmed 19 days ago
B+
Retailer 14
-
€2,506 EUR
View
Retailer 15
-
€2,528 EUR
View
Price last confirmed 31 days ago
B+
Retailer 16
-
€2,549 EUR
View
B
Retailer 17
-
€3,578 EUR
View
Most Expensive
NZ Jewellers
994bbfa0-a063-4806-8502-135ace74179e · Oct 17
€4,293 EUR
$4,793 USD
View
Price last confirmed 20 days ago
17 more retailers have this diamond
Prices start from €1,536 EURSave up to €2,042 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
€1,536 EUR