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Radiant|Natural|GIA

1.21ct J SI1 Radiant Natural Diamond

EX • J/SI1 • GIA 2557272200

Certificate GIA 2557272200

Diamond specifications and retailer prices

From $2,496 AUD
As of November 6, 2026
Save $3,347 AUD (57%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $6,976 AUD at NZ Jewellers · As of October 17, 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 J 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 2557272200. Listed at 18 retailers as of November 2, 2026, with a 134% 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
J
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2557272200
Dimensions7.08 × 5.46 × 3.67 mm
L/W Ratio1.30
Girdle conditionPolished
Culet sizeNone
Key to symbols
Feather, Crystal, Cloud, Cavity, Needle
Top View
7.08 mm5.46 mm1.21 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2557272200
Side View
Table 68.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 67.1%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $3,625 AUD|Low: $2,496 AUD|High: $5,916 AUD|Avg: $3,867 AUD|+1.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 7, 2026
Retailer 7$2,496 AUD
Retailer 2$2,621 AUD
Retailer 8$3,080 AUD
Retailer 3$3,483 AUD
Retailer 1$3,625 AUD
Retailer 5$4,072 AUD
Retailer 9$4,107 AUD
Retailer 4$4,142 AUD
Retailer 6$5,843 AUD

36 data points across 9 retailers

18 retailers$2,496 AUD to $5,843 AUD

A
Cheapest Retailer
-
$2,496 AUD
A
Retailer 2
-
$2,621 AUD
View
B+
Retailer 3
-
$3,080 AUD
View
Final sale: no returns
B+
Retailer 4
-
$3,128 AUD
View
B+
Retailer 5
-
$3,129 AUD
View
Retailer 6
-
$3,336 AUD
View
Price last confirmed 22 days ago
Retailer 7
-
$3,336 AUD
View
Price last confirmed 20 days ago
B+
Retailer 8
-
$3,483 AUD
View
Retailer 9
-
$3,490 AUD
View
Price last confirmed 22 days ago
B+
Retailer 10
-
$3,538 AUD
View
B
Retailer 11
-
$3,621 AUD
View
B+
Retailer 12
-
$3,625 AUD
View
Retailer 13
-
$3,850 AUD
View
Price last confirmed 19 days ago
B+
Retailer 14
-
$4,072 AUD
View
Retailer 15
-
$4,107 AUD
View
Price last confirmed 31 days ago
B+
Retailer 16
-
$4,142 AUD
View
B
Retailer 17
-
$5,843 AUD
View
Most Expensive
NZ Jewellers
994bbfa0-a063-4806-8502-135ace74179e · Oct 17
$6,976 AUD
$4,793 USD
View
Price last confirmed 20 days ago
17 more retailers have this diamond
Prices start from $2,496 AUDSave up to $3,347 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.

A
1.21ct Radiant
$2,496 AUD