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Radiant|Natural|GIA

1.20ct J SI2 Radiant Natural Diamond

EX • J/SI2 • GIA 2458689031

Certificate GIA 2458689031

Diamond specifications and retailer prices

From €1,036 EUR
As of November 6, 2026
Save €1,014 EUR (49%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: €2,738 EUR at NZ Jewellers · As of September 20, 2026
View at NZ Jewellers

About this 1.2ct natural radiant diamond

This 1.2ct natural radiant sits in the classic one-carat band, graded J colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2458689031. Listed at 7 retailers as of November 4, 2026, with a 98% 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

1.20
Carat
J
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceStrong
OriginNatural
Grading LabGIA
CertificateGIA 2458689031
Dimensions6.56 × 5.24 × 3.61 mm
L/W Ratio1.25
Top View
6.56 mm5.24 mm1.20 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceStrong
CertificateGIA 2458689031
Side View
Table 66.0%CrownGirdlePavilionCulet: NoneDepth 68.9%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: €1,268 EUR|Low: €826 EUR|High: €2,080 EUR|Avg: €1,294 EUR|+4.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 7, 2026
Retailer 9€826 EUR
Retailer 4€1,036 EUR
Retailer 7€1,077 EUR
Retailer 5€1,122 EUR
Retailer 1€1,268 EUR
Retailer 8€1,335 EUR
Retailer 6€1,384 EUR
Retailer 2€1,558 EUR
Retailer 3€2,050 EUR

33 data points across 9 retailers

7 retailers€1,036 EUR to €2,050 EUR

A
Cheapest Retailer
-
€1,036 EUR
Final sale: no returns
Retailer 2
-
€1,122 EUR
View
Price last confirmed 46 days ago
B+
Retailer 3
-
€1,268 EUR
View
Retailer 4
-
€1,295 EUR
View
Price last confirmed 44 days ago
B+
Retailer 5
-
€1,558 EUR
View
B+
Retailer 6
-
€2,050 EUR
View
Most Expensive
NZ Jewellers
9d061dce-021d-488f-8260-ce79ce014297 · Sep 20
€2,738 EUR
$3,057 USD
View
Price last confirmed 47 days ago
6 more retailers have this diamond
Prices start from €1,036 EURSave up to €1,014 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
1.20ct Radiant
€1,036 EUR