Radiant|Natural|GIA

1.21ct I SI1 Radiant Natural Diamond

EX • I/SI1 • GIA 1448552241

Certificate GIA 1448552241

Diamond specifications and retailer prices

From $6,939 AUD
$4,863 USD
As of November 1, 2026
Save $3,851 AUD (36%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $14,689 AUD 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
Colour
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

How it works →
B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $8,567 AUD|Low: $6,939 AUD|High: $13,095 AUD|Avg: $9,244 AUD|-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$6,939 AUD
Retailer 10$7,956 AUD
Retailer 8$8,175 AUD
Retailer 4$8,425 AUD
Retailer 1$8,567 AUD
Retailer 9$8,628 AUD
Retailer 6$9,598 AUD
Retailer 2$9,686 AUD
Retailer 5$10,790 AUD
Retailer 3$12,939 AUD

33 data points across 10 retailers

16 retailers$6,939 AUD to $10,790 AUD

B
Cheapest Retailer
-
$6,939 AUD
$4,863 USD
B
Retailer 2
-
$7,861 AUD
$5,509 USD
View
Retailer 3
-
$7,956 AUD
$5,576 USD
View
Price last confirmed 34 days ago
B
Retailer 4
-
$8,175 AUD
$5,729 USD
View
B
Retailer 5
-
$8,425 AUD
£4,649 GBP
View
B
Retailer 6
-
$8,567 AUD
£4,727 GBP
View
Retailer 7
-
$8,628 AUD
View
Price last confirmed 34 days ago
B
Retailer 8
-
$8,761 AUD
$6,140 USD
View
B
Retailer 9
-
$8,761 AUD
$6,140 USD
View
B
Retailer 10
-
$9,047 AUD
$6,340 USD
View
Retailer 11
-
$9,181 AUD
$6,434 USD
View
Price last confirmed 34 days ago
B
Retailer 12
-
$9,598 AUD
€6,406 EUR
View
Retailer 13
-
$9,686 AUD
$6,788 USD
View
Price last confirmed 10 days ago
B
Retailer 14
-
$10,790 AUD
ZAR 122,164 ZAR
View
Retailer 15
-
$12,939 AUD
£7,140 GBP
View
Price under review
Most Expensive
NZ Jewellers
c912433b-c587-4a8d-bdf2-f60c249c3acd · Sep 28
$14,689 AUD
$10,294 USD
View
Price under review
15 more retailers have this diamond
Prices start from $6,939 AUDSave up to $3,851 AUD

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
$6,939 AUD