Round|Natural|GIA

1.21ct J SI1 Round Natural Diamond

EX • J/SI1 • GIA 2447434477

Certificate GIA 2447434477

Diamond specifications and retailer prices

From $2,869 AUD
As of November 6, 2026
Save $3,855 AUD (57%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $8,045 AUD at NZ Jewellers · As of October 17, 2026
View at NZ Jewellers

About this 1.21ct natural round diamond

This 1.21ct natural round sits in the classic one-carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2447434477. Listed at 21 retailers as of November 4, 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

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.5°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 2447434477
Dimensions6.80 × 6.76 × 4.25 mm
L/W Ratio1.01
Top View
6.80 mm6.76 mm1.21 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2447434477
Side View
Table 56.0%Crown 36.5°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 62.7%

Caratlytics Score

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

Price History

Last verified: Nov 6
Current: $4,047 AUD|Low: $2,869 AUD|High: $6,821 AUD|Avg: $4,225 AUD|+0.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 7, 2026
Retailer 3$2,869 AUD
Retailer 6$3,493 AUD
Retailer 7$3,551 AUD
Retailer 1$4,047 AUD
Retailer 8$4,311 AUD
Retailer 2$4,480 AUD
Retailer 4$4,697 AUD
Retailer 5$6,724 AUD

38 data points across 8 retailers

21 retailers$2,869 AUD to $6,724 AUD

A
Cheapest Retailer
-
$2,869 AUD
B+
Retailer 2
-
$3,375 AUD
View
B+
Retailer 3
-
$3,446 AUD
View
B+
Retailer 4
-
$3,493 AUD
View
B+
Retailer 5
-
$3,551 AUD
View
Final sale: no returns
B+
Retailer 6
-
$3,606 AUD
View
B+
Retailer 7
-
$3,799 AUD
View
Retailer 8
-
$3,848 AUD
View
Price last confirmed 45 days ago
Retailer 9
-
$3,848 AUD
View
Price last confirmed 20 days ago
Retailer 10
-
$3,848 AUD
View
Price last confirmed 22 days ago
Retailer 11
-
$3,997 AUD
View
Price last confirmed 23 days ago
B+
Retailer 12
-
$4,047 AUD
View
B+
Retailer 13
-
$4,053 AUD
View
Retailer 14
-
$4,311 AUD
View
Price last confirmed 31 days ago
Retailer 15
-
$4,440 AUD
View
Price last confirmed 20 days ago
Retailer 16
-
$4,440 AUD
View
Price last confirmed 46 days ago
B+
Retailer 17
-
$4,480 AUD
View
B+
Retailer 18
-
$4,697 AUD
View
B
Retailer 19
-
$6,724 AUD
View
Retailer 20
-
$8,045 AUD
View
Price last confirmed 47 days ago
Most Expensive
NZ Jewellers
d05e15f4-8009-4628-b689-e15d2496a80f · Oct 17
$8,045 AUD
$5,528 USD
View
Price last confirmed 20 days ago
20 more retailers have this diamond
Prices start from $2,869 AUDSave up to $3,855 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 Round
$2,869 AUD