Radiant|Natural|GIA

1.21ct I SI1 Radiant Natural Diamond

EX • I/SI1 • GIA 1448552241

Certificate GIA 1448552241

Diamond specifications and retailer prices

From €4,353 EUR
$4,863 USD
As of November 1, 2026
Save €2,416 EUR (36%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: €9,214 EUR at NZ Jewellers · As of September 28, 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 I 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 1448552241. Listed at 16 retailers as of October 31, 2026, with a 55% 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
I
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryGood
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1448552241
Dimensions7.08 × 5.58 × 3.82 mm
L/W Ratio1.27
Top View
7.08 mm5.58 mm1.21 ctI / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryGood
FluorescenceNone
CertificateGIA 1448552241
Side View
Table 69.0%CrownGirdle: STK-ETKPavilionCulet: NoneDepth 68.4%

Caratlytics Score

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B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: €5,374 EUR|Low: €4,353 EUR|High: €8,214 EUR|Avg: €5,798 EUR|-0.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 1, 2026
Retailer 7€4,353 EUR
Retailer 10€4,991 EUR
Retailer 8€5,128 EUR
Retailer 4€5,285 EUR
Retailer 1€5,374 EUR
Retailer 9€5,412 EUR
Retailer 6€6,021 EUR
Retailer 2€6,076 EUR
Retailer 5€6,769 EUR
Retailer 3€8,116 EUR

33 data points across 10 retailers

16 retailers€4,353 EUR to €6,769 EUR

B
Cheapest Retailer
-
€4,353 EUR
$4,863 USD
B
Retailer 2
-
€4,931 EUR
$5,509 USD
View
Retailer 3
-
€4,991 EUR
$5,576 USD
View
Price last confirmed 34 days ago
B
Retailer 4
-
€5,128 EUR
$5,729 USD
View
B
Retailer 5
-
€5,285 EUR
£4,649 GBP
View
B
Retailer 6
-
€5,374 EUR
£4,727 GBP
View
Retailer 7
-
€5,412 EUR
A$9,302 AUD
View
Price last confirmed 34 days ago
B
Retailer 8
-
€5,496 EUR
$6,140 USD
View
B
Retailer 9
-
€5,496 EUR
$6,140 USD
View
B
Retailer 10
-
€5,675 EUR
$6,340 USD
View
Retailer 11
-
€5,759 EUR
$6,434 USD
View
Price last confirmed 34 days ago
B
Retailer 12
-
€6,021 EUR
View
Retailer 13
-
€6,076 EUR
$6,788 USD
View
Price last confirmed 10 days ago
B
Retailer 14
-
€6,769 EUR
ZAR 122,164 ZAR
View
Retailer 15
-
€8,116 EUR
£7,140 GBP
View
Price under review
Most Expensive
NZ Jewellers
c912433b-c587-4a8d-bdf2-f60c249c3acd · Sep 28
€9,214 EUR
$10,294 USD
View
Price under review
15 more retailers have this diamond
Prices start from €4,353 EURSave up to €2,416 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
€4,353 EUR