Radiant|Natural|GIA

1.21ct I SI1 Radiant Natural Diamond

EX • I/SI1 • GIA 2231483721

Certificate GIA 2231483721

Diamond specifications and retailer prices

From $2,906 USD
As of October 31, 2026
Save $3,200 USD (52%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $6,106 USD at NZ Jewellers · As of October 30, 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 SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2231483721. Listed at 15 retailers as of October 30, 2026, with prices from $2,906 to $6,106, a $3,200 spread on the same certified stone. NZ Jewellers lists it at $6,106. 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
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 2231483721
Dimensions6.94 × 5.28 × 3.69 mm
L/W Ratio1.31
Culet sizeNone
Top View
6.94 mm5.28 mm1.21 ctI / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceFaint
CertificateGIA 2231483721
Side View
Table 68.0%CrownGirdle: VTK-VTKPavilionCulet: NoneDepth 70.0%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: $6,106 USD|Low: $2,906 USD|High: $6,106 USD|Avg: $3,867 USD
NZ Jewellers
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
November 2, 2026
Retailer 3$2,906 USD
Retailer 13$3,175 USD
Retailer 15$3,175 USD
Retailer 4$3,194 USD
Retailer 14$3,297 USD
Retailer 6$3,324 USD
Retailer 5$3,476 USD
Retailer 9$3,663 USD
Retailer 12$3,664 USD
Retailer 7$3,694 USD
Retailer 16$3,972 USD
Retailer 8$3,988 USD
Retailer 2$4,102 USD
Retailer 11$4,308 USD
Retailer 10$5,861 USD
NZ Jewellers$6,106 USD

18 data points across 16 retailers

15 retailers$2,906 USD to $6,106 USD

B+
Cheapest Retailer
-
$2,906 USD
B+
Retailer 2
-
$3,175 USD
View
B+
Retailer 3
-
$3,175 USD
View
B
Retailer 4
-
$3,194 USD
View
B
Retailer 5
-
$3,297 USD
View
B
Retailer 6
-
$3,324 USD
View
B+
Retailer 7
-
$3,476 USD
CA$4,827 CAD
View
B
Retailer 8
-
$3,663 USD
£2,884 GBP
View
B
Retailer 9
-
$3,664 USD
View
B
Retailer 10
-
$3,694 USD
View
Retailer 11
-
$3,972 USD
View
Price last confirmed 10 days ago
B
Retailer 12
-
$4,102 USD
€3,907 EUR
View
B
Retailer 13
-
$4,308 USD
ZAR 69,598 ZAR
View
B
Retailer 14
-
$5,861 USD
£4,615 GBP
View
Most Expensive
B
NZ Jewellers
304b2cca-abd9-424a-9469-a079e08a804e · Oct 30
$6,106 USD
View
14 more retailers have this diamond
Prices start from $2,906 USDSave up to $3,200 USD

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
$2,906 USD