Radiant|Natural|GIA

1.21ct I SI2 Radiant Natural Diamond

EX • I/SI2 • GIA 2556128158

Certificate GIA 2556128158

Diamond specifications and retailer prices

From €2,216 EUR
A$3,808 AUD
As of October 31, 2026
6 retailers carry this diamond
Most expensive: €4,748 EUR at NZ Jewellers · As of September 25, 2026
View at NZ Jewellers

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 SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2556128158. Listed at 6 retailers as of October 31, 2026. 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
I
Color
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 2556128158
Dimensions7.11 × 5.26 × 3.57 mm
L/W Ratio1.35
Top View
7.11 mm5.26 mm1.21 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2556128158
Side View
Table 66.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 67.9%

Caratlytics Score

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B+
Very Good
Strong quality and value balance
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Price History

Last verified: Oct 31
Current: €2,145 EUR|Low: €1,673 EUR|High: €4,188 EUR|Avg: €2,411 EUR|-0.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
October 6, 2026
Retailer 10€1,673 EUR
Retailer 17€1,702 EUR
Retailer 11€1,714 EUR
Retailer 12€1,841 EUR
Retailer 4€1,999 EUR
Retailer 13€2,095 EUR
Retailer 15€2,115 EUR
Retailer 1€2,145 EUR
Retailer 5€2,216 EUR
Retailer 7€2,327 EUR
Retailer 8€2,327 EUR
Retailer 9€2,408 EUR
Retailer 2€2,773 EUR
Retailer 6€2,841 EUR
Retailer 14€3,187 EUR
Retailer 3€3,436 EUR
Retailer 16€3,965 EUR

18 data points across 17 retailers

6 retailers

Retailer 1
-
€1,673 EUR
HK$14,600 HKD
Price last confirmed 27 days ago
Retailer 2
-
€1,702 EUR
$1,902 USD
View
Price last confirmed 27 days ago
Retailer 3
-
€2,095 EUR
$2,340 USD
View
Price last confirmed 28 days ago
B+
Retailer 4
-
€2,216 EUR
A$3,808 AUD
View
Retailer 5
-
€3,965 EUR
£3,488 GBP
View
Price last confirmed 27 days ago
Most Expensive
NZ Jewellers
43dc02b9-5f31-4cb3-aa5c-7ce9f778202a · Sep 25
€4,748 EUR
$5,305 USD
View
Price last confirmed 37 days ago
5 more retailers have this diamond
Prices start from €2,216 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
€2,216 EUR