Radiant|Natural|GIA

1.21ct G SI1 Radiant Natural Diamond

ID • G/SI1 • GIA 01

Certificate GIA 01

Diamond specifications and retailer prices

From €3,198 EUR
As of November 6, 2026
Save €777 EUR (20%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: €3,974 EUR at Blue Nile · As of November 7, 2026
View at Blue Nile

About this 1.21ct natural radiant diamond

This 1.21ct natural radiant sits in the classic one-carat band, graded G 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. Listed at 3 retailers as of November 6, 2026, with prices from €3,198 to €3,974, a €777 spread on the same certified stone. Blue Nile lists it at €3,974. 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
G
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 01
Dimensions7.31 × 5.40 × 3.58 mm
L/W Ratio1.35
Top View
7.31 mm5.40 mm1.21 ctG / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 01
Side View
Table 68.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 66.2%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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Price History

Last verified: Nov 6
Current: €3,974 EUR|Low: €3,155 EUR|High: €3,974 EUR|Avg: €3,430 EUR
Blue Nile
Retailer 2
Retailer 3
September 23, 2026
Retailer 2€3,198 EUR
Retailer 3€3,352 EUR
Blue Nile€3,974 EUR

4 data points across 3 retailers

3 retailers€3,198 EUR to €3,974 EUR

B+
Cheapest Retailer
-
€3,198 EUR
B+
Retailer 2
-
€3,352 EUR
View
Most Expensive
B
Blue Nile
28069118 · Nov 7
€3,974 EUR
$4,437 USD
View
2 more retailers have this diamond
Prices start from €3,198 EURSave up to €777 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
€3,198 EUR