Round|Natural|GIA

1.21ct J SI1 Round Natural Diamond

EX • J/SI1 • GIA 2447434477

Certificate GIA 2447434477

Diamond specifications and retailer prices

From $1,971 USD
As of November 6, 2026
Save $2,649 USD (57%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $5,528 USD 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
Color
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: $1,971 USD|Low: $1,905 USD|High: $4,687 USD|Avg: $2,900 USD|-2.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 1$1,971 USD
Retailer 6$2,400 USD
Retailer 7$2,440 USD
Retailer 2$2,781 USD
Retailer 8$2,962 USD
Retailer 4$3,073 USD
Retailer 3$3,227 USD
Retailer 5$4,620 USD

38 data points across 8 retailers

21 retailers$1,971 USD to $4,620 USD

A
Cheapest Retailer
-
$1,971 USD
B+
Retailer 2
-
$2,319 USD
View
B+
Retailer 3
-
$2,368 USD
View
B+
Retailer 4
-
$2,400 USD
View
B+
Retailer 5
-
$2,440 USD
View
Final sale: no returns
B+
Retailer 6
-
$2,478 USD
View
B+
Retailer 7
-
$2,610 USD
View
Retailer 8
-
$2,644 USD
View
Price last confirmed 44 days ago
Retailer 9
-
$2,644 USD
View
Price last confirmed 19 days ago
Retailer 10
-
$2,644 USD
View
Price last confirmed 21 days ago
Retailer 11
-
$2,746 USD
View
Price last confirmed 22 days ago
B+
Retailer 12
-
$2,781 USD
View
B+
Retailer 13
-
$2,785 USD
View
Retailer 14
-
$2,962 USD
View
Price last confirmed 30 days ago
Retailer 15
-
$3,051 USD
View
Price last confirmed 19 days ago
Retailer 16
-
$3,051 USD
View
Price last confirmed 45 days ago
B+
Retailer 17
-
$3,073 USD
View
B+
Retailer 18
-
$3,227 USD
View
B
Retailer 19
-
$4,620 USD
View
Retailer 20
-
$5,528 USD
View
Price last confirmed 46 days ago
Most Expensive
NZ Jewellers
d05e15f4-8009-4628-b689-e15d2496a80f · Oct 17
$5,528 USD
View
Price last confirmed 20 days ago
20 more retailers have this diamond
Prices start from $1,971 USDSave up to $2,649 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.

A
1.21ct Round
$1,971 USD