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Radiant|Natural|GIA

1.21ct I SI1 Radiant Natural Diamond

VG • I/SI1 • GIA 5516329413

Certificate GIA 5516329413

Diamond specifications and retailer prices

From €3,152 EUR
A$5,418 AUD
As of November 1, 2026
Save €1,168 EUR (27%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: €4,320 EUR at 77 Diamonds · As of November 1, 2026
View at 77 Diamonds

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 very-good cut grade stated by the retailer rather than the lab and certified by GIA 5516329413. Listed at 3 retailers as of November 1, 2026, with prices from €3,152 to €4,320, a €1,168 spread on the same certified stone. 77 Diamonds lists it at €4,320. 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
I
Color
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 5516329413
Dimensions6.86 × 5.44 × 3.52 mm
L/W Ratio1.26
Top View
6.86 mm5.44 mm1.21 ctI / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 5516329413
Side View
Table 73.0%CrownGirdlePavilionCuletDepth 64.7%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Nov 1
Current: €4,320 EUR|Low: €3,152 EUR|High: €4,356 EUR|Avg: €3,664 EUR|+4.1%
77 Diamonds
Retailer 2
Retailer 3
November 1, 2026
Retailer 2€3,152 EUR
Retailer 3€3,180 EUR
77 Diamonds€4,320 EUR

37 data points across 3 retailers

3 retailers€3,152 EUR to €4,320 EUR

B
Cheapest Retailer
-
€3,152 EUR
A$5,418 AUD
B
Retailer 2
-
€3,180 EUR
CA$4,934 CAD
View
Most Expensive
C
77 Diamonds
RADMBXYNFYQEZ · Nov 1
€4,320 EUR
£3,801 GBP
View
2 more retailers have this diamond
Prices start from €3,152 EURSave up to €1,168 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
€3,152 EUR