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Radiant|Natural|GIA

0.51ct F I1 Radiant Natural Diamond

F/I1 • GIA 2191781000

Shape and cutting style on the report: Cut cornered square modified brilliant

Certificate GIA 2191781000

Diamond specifications and retailer prices

From €945 EUR
$1,060 USD
As of November 2, 2026
Save €138 EUR (13%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: €1,178 EUR at Wholesale Diamonds Direct · As of October 27, 2026
View at Wholesale Diamonds Direct

About this 0.51ct natural radiant diamond

This 0.51ct natural radiant sits in the half to three-quarter carat band, graded F colour (colourless) and I1 clarity (included) and certified by GIA 2191781000. Listed at 5 retailers as of November 2, 2026, with a relatively tight 15% spread, which is unusual at this carat range and suggests competitive pricing across the listings. 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

0.51
Carat
F
Colour
I1
Clarity
-
Cut

Specifications

Cut
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2191781000
Dimensions4.57 × 4.49 × 3.10 mm
L/W Ratio1.02
Culet sizeNone
Key to symbols
Feather, Crystal
Top View
4.57 mm4.49 mm0.51 ctF / I1
OriginNatural
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2191781000
Side View
Table 67.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 69.0%

Caratlytics Score

How it works →
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 2
Current: €1,083 EUR|Low: €945 EUR|High: €1,178 EUR|Avg: €1,025 EUR|+2.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Wholesale Diamonds Direct
November 2, 2026
Retailer 3€945 EUR
Retailer 4€945 EUR
Retailer 2€981 EUR
Retailer 1€1,083 EUR
Wholesale Diamonds Direct€1,178 EUR

16 data points across 5 retailers

5 retailers€945 EUR to €1,083 EUR

B
Cheapest Retailer
-
€945 EUR
$1,060 USD
B
Retailer 2
-
€945 EUR
$1,060 USD
View
C
Retailer 3
-
€981 EUR
$1,100 USD
View
C
Retailer 4
-
€1,083 EUR
View
Most Expensive
Wholesale Diamonds Direct
107650411 · Oct 27
€1,178 EUR
$1,322 USD
View
Price last confirmed 7 days ago
4 more retailers have this diamond
Prices start from €945 EURSave up to €138 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
0.51ct Radiant
€945 EUR