Radiant|Natural|GIA

1.21ct J SI1 Radiant Natural Diamond

VG • J/SI1 • GIA 2245114745

Certificate GIA 2245114745

Diamond specifications and retailer prices

From €1,749 EUR
As of November 4, 2026
Save €1,414 EUR (45%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: €3,163 EUR at Helzberg Diamonds · As of November 6, 2026
View at Helzberg Diamonds

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 very-good cut grade stated by the retailer rather than the lab and certified by GIA 2245114745. Listed at 11 retailers as of November 4, 2026, with prices from €1,749 to €3,163, a €1,414 spread on the same certified stone. Helzberg Diamonds lists it at €3,163. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.21
Carat
J
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2245114745
Dimensions7.09 × 5.43 × 3.74 mm
L/W Ratio1.31
Top View
7.09 mm5.43 mm1.21 ctJ / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2245114745
Side View
Table 70.0%CrownGirdle: Slightly ThickPavilionCulet: NoneDepth 68.9%

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 4
Current: €3,163 EUR|Low: €1,749 EUR|High: €3,163 EUR|Avg: €2,156 EUR
Helzberg Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 7, 2026
Retailer 9€1,749 EUR
Retailer 10€1,764 EUR
Retailer 8€1,770 EUR
Retailer 3€1,921 EUR
Retailer 2€1,929 EUR
Retailer 5€2,099 EUR
Retailer 11€2,243 EUR
Retailer 4€2,479 EUR
Retailer 7€2,691 EUR
Retailer 6€2,904 EUR
Helzberg Diamonds€3,163 EUR

8 data points across 11 retailers

11 retailers€1,749 EUR to €3,163 EUR

B+
Cheapest Retailer
-
€1,749 EUR
B+
Retailer 2
-
€1,764 EUR
View
B+
Retailer 3
-
€1,770 EUR
View
B+
Retailer 4
-
€1,921 EUR
View
B+
Retailer 5
-
€1,929 EUR
View
B+
Retailer 6
-
€2,099 EUR
View
B
Retailer 7
-
€2,243 EUR
View
B
Retailer 8
-
€2,479 EUR
View
B
Retailer 9
-
€2,691 EUR
View
B
Retailer 10
-
€2,904 EUR
View
Most Expensive
B
Helzberg Diamonds
XZRIIKLHHKNKL · Nov 6
€3,163 EUR
$3,532 USD
View
10 more retailers have this diamond
Prices start from €1,749 EURSave up to €1,414 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
€1,749 EUR