Radiant|Natural|GIA

1.21ct F SI1 Radiant Natural Diamond

EX • F/SI1 • GIA 2566444631

Certificate GIA 2566444631

Diamond specifications and retailer prices

From $3,378 USD
As of November 4, 2026
Save $2,691 USD (44%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $6,069 USD at Wholesale Diamonds Direct · As of November 6, 2026
View at Wholesale Diamonds Direct

About this 1.21ct natural radiant diamond

This 1.21ct natural radiant sits in the classic one-carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2566444631. Listed at 14 retailers as of November 4, 2026, with prices from $3,378 to $6,069, a $2,691 spread on the same certified stone. Wholesale Diamonds Direct lists it at $6,069. 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
F
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2566444631
Dimensions7.41 × 5.30 × 3.60 mm
L/W Ratio1.40
Culet sizeNone
Top View
7.41 mm5.30 mm1.21 ctF / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2566444631
Side View
Table 68.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 67.9%

Caratlytics Score

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

Price History

Last verified: Nov 4
Current: $3,899 USD|Low: $3,378 USD|High: $6,069 USD|Avg: $4,380 USD|-0.3%
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
Wholesale Diamonds Direct
November 7, 2026
Retailer 12$3,378 USD
Retailer 3$3,433 USD
Retailer 8$3,460 USD
Retailer 10$3,609 USD
Retailer 9$3,660 USD
Retailer 5$3,686 USD
Retailer 1$3,899 USD
Retailer 11$4,297 USD
Retailer 4$4,347 USD
Retailer 7$4,502 USD
Retailer 6$4,687 USD
Retailer 2$5,697 USD
Retailer 13$6,052 USD
Wholesale Diamonds Direct$6,069 USD

38 data points across 14 retailers

14 retailers$3,378 USD to $6,069 USD

B+
Cheapest Retailer
-
$3,378 USD
B+
Retailer 2
-
$3,433 USD
View
B+
Retailer 3
-
$3,460 USD
View
B+
Retailer 4
-
$3,609 USD
View
Retailer 5
-
$3,660 USD
View
Price last confirmed 10 days ago
B+
Retailer 6
-
$3,686 USD
View
B+
Retailer 7
-
$3,899 USD
View
B
Retailer 8
-
$4,297 USD
View
B
Retailer 9
-
$4,347 USD
View
B
Retailer 10
-
$4,502 USD
View
B
Retailer 11
-
$4,687 USD
View
B
Retailer 12
-
$5,697 USD
View
B
Retailer 13
-
$6,052 USD
View
Most Expensive
B
Wholesale Diamonds Direct
451166363 · Nov 6
$6,069 USD
View
13 more retailers have this diamond
Prices start from $3,378 USDSave up to $2,691 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
$3,378 USD