Radiant|Natural|GIA

1.21ct I SI1 Radiant Natural Diamond

EX • I/SI1 • GIA 1448552241

Certificate GIA 1448552241

Diamond specifications and retailer prices

From $4,863 USD
As of November 1, 2026
Save $2,699 USD (36%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $10,294 USD at NZ Jewellers · As of September 28, 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 1448552241. Listed at 16 retailers as of October 31, 2026, with a 55% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
SymmetryGood
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1448552241
Dimensions7.08 × 5.58 × 3.82 mm
L/W Ratio1.27
Top View
7.08 mm5.58 mm1.21 ctI / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryGood
FluorescenceNone
CertificateGIA 1448552241
Side View
Table 69.0%CrownGirdle: STK-ETKPavilionCulet: NoneDepth 68.4%

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: $6,004 USD|Low: $4,863 USD|High: $9,177 USD|Avg: $6,478 USD|-0.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 1, 2026
Retailer 7$4,863 USD
Retailer 10$5,576 USD
Retailer 8$5,729 USD
Retailer 4$5,905 USD
Retailer 1$6,004 USD
Retailer 9$6,046 USD
Retailer 6$6,726 USD
Retailer 2$6,788 USD
Retailer 5$7,562 USD
Retailer 3$9,068 USD

33 data points across 10 retailers

16 retailers$4,863 USD to $7,562 USD

B
Cheapest Retailer
-
$4,863 USD
B
Retailer 2
-
$5,509 USD
View
Retailer 3
-
$5,576 USD
View
Price last confirmed 34 days ago
B
Retailer 4
-
$5,729 USD
View
B
Retailer 5
-
$5,905 USD
£4,649 GBP
View
B
Retailer 6
-
$6,004 USD
£4,727 GBP
View
Retailer 7
-
$6,046 USD
A$9,302 AUD
View
Price last confirmed 34 days ago
B
Retailer 8
-
$6,140 USD
View
B
Retailer 9
-
$6,140 USD
View
B
Retailer 10
-
$6,340 USD
View
Retailer 11
-
$6,434 USD
View
Price last confirmed 34 days ago
B
Retailer 12
-
$6,726 USD
€6,406 EUR
View
Retailer 13
-
$6,788 USD
View
Price last confirmed 10 days ago
B
Retailer 14
-
$7,562 USD
ZAR 122,164 ZAR
View
Retailer 15
-
$9,068 USD
£7,140 GBP
View
Price under review
Most Expensive
NZ Jewellers
c912433b-c587-4a8d-bdf2-f60c249c3acd · Sep 28
$10,294 USD
View
Price under review
15 more retailers have this diamond
Prices start from $4,863 USDSave up to $2,699 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
$4,863 USD