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Radiant|Natural|GIA

1.21ct J SI1 Radiant Natural Diamond

ID • J/SI1 • GIA 5241113102

Certificate GIA 5241113102

Diamond specifications and retailer prices

From €2,501 EUR
As of November 6, 2026
Save €2,870 EUR (53%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: €5,370 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 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 5241113102. Listed at 21 retailers as of November 5, 2026, with prices from €2,501 to €5,370, a €2,870 spread on the same certified stone. NZ Jewellers lists it at €5,370. 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
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 5241113102
Dimensions7.40 × 5.19 × 3.64 mm
L/W Ratio1.43
Culet sizeNone
Top View
7.40 mm5.19 mm1.21 ctJ / SI1
OriginNatural
CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 5241113102
Side View
Table 69.0%CrownGirdle: VTK-VTKPavilionCulet: NoneDepth 70.0%

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: Nov 6
Current: €5,370 EUR|Low: €2,501 EUR|High: €5,370 EUR|Avg: €3,274 EUR
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
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
Retailer 21
November 7, 2026
Retailer 12€2,501 EUR
Retailer 10€2,560 EUR
Retailer 11€2,622 EUR
Retailer 7€2,714 EUR
Retailer 5€2,793 EUR
Retailer 9€2,793 EUR
Retailer 8€2,811 EUR
Retailer 6€2,900 EUR
Retailer 4€2,923 EUR
Retailer 15€2,990 EUR
Retailer 3€3,056 EUR
Retailer 16€3,073 EUR
Retailer 2€3,189 EUR
Retailer 20€3,222 EUR
Retailer 21€3,249 EUR
Retailer 17€3,587 EUR
Retailer 18€3,762 EUR
Retailer 13€3,898 EUR
Retailer 14€4,494 EUR
Retailer 19€5,141 EUR
NZ Jewellers€5,370 EUR

16 data points across 21 retailers

21 retailers€2,501 EUR to €5,370 EUR

B+
Cheapest Retailer
-
€2,501 EUR
B+
Retailer 2
-
€2,560 EUR
View
B
Retailer 3
-
€2,622 EUR
View
B
Retailer 4
-
€2,714 EUR
View
B
Retailer 5
-
€2,793 EUR
View
Retailer 6
-
€2,793 EUR
View
Price last confirmed 9 days ago
B
Retailer 7
-
€2,811 EUR
View
B
Retailer 8
-
€2,900 EUR
View
B
Retailer 9
-
€2,923 EUR
View
B
Retailer 10
-
€2,990 EUR
View
B
Retailer 11
-
€3,056 EUR
View
B
Retailer 12
-
€3,073 EUR
View
B
Retailer 13
-
€3,189 EUR
View
B
Retailer 14
-
€3,222 EUR
View
B
Retailer 15
-
€3,249 EUR
View
B
Retailer 16
-
€3,587 EUR
View
B
Retailer 17
-
€3,762 EUR
View
B
Retailer 18
-
€3,898 EUR
View
B
Retailer 19
-
€4,494 EUR
View
B
Retailer 20
-
€5,141 EUR
View
Most Expensive
B
NZ Jewellers
b2e4fea6-1d79-4214-8cff-e134bc66ec8b · Nov 5
€5,370 EUR
$5,996 USD
View
20 more retailers have this diamond
Prices start from €2,501 EURSave up to €2,870 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
€2,501 EUR