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Round|Natural|GIA

1.21ct J SI1 Round Natural Diamond

EX • J/SI1 • GIA 2447434477

Certificate GIA 2447434477

Diamond specifications and retailer prices

From $2,526 SGD
As of November 6, 2026
Save $3,395 SGD (57%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $7,085 SGD 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
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $3,945 SGD|Low: $2,441 SGD|High: $6,007 SGD|Avg: $3,701 SGD|+0.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 2$2,526 SGD
Retailer 6$3,076 SGD
Retailer 7$3,127 SGD
Retailer 3$3,564 SGD
Retailer 8$3,796 SGD
Retailer 1$3,945 SGD
Retailer 4$4,136 SGD
Retailer 5$5,921 SGD

38 data points across 8 retailers

21 retailers$2,526 SGD to $5,921 SGD

A
Cheapest Retailer
-
$2,526 SGD
B+
Retailer 2
-
$2,972 SGD
View
B+
Retailer 3
-
$3,035 SGD
View
B+
Retailer 4
-
$3,076 SGD
View
B+
Retailer 5
-
$3,127 SGD
View
Final sale: no returns
B+
Retailer 6
-
$3,176 SGD
View
B+
Retailer 7
-
$3,345 SGD
View
Retailer 8
-
$3,389 SGD
View
Price last confirmed 44 days ago
Retailer 9
-
$3,389 SGD
View
Price last confirmed 19 days ago
Retailer 10
-
$3,389 SGD
View
Price last confirmed 21 days ago
Retailer 11
-
$3,519 SGD
View
Price last confirmed 22 days ago
B+
Retailer 12
-
$3,564 SGD
View
B+
Retailer 13
-
$3,569 SGD
View
Retailer 14
-
$3,796 SGD
View
Price last confirmed 30 days ago
Retailer 15
-
$3,910 SGD
View
Price last confirmed 19 days ago
Retailer 16
-
$3,910 SGD
View
Price last confirmed 45 days ago
B+
Retailer 17
-
$3,945 SGD
View
B+
Retailer 18
-
$4,136 SGD
View
B
Retailer 19
-
$5,921 SGD
View
Retailer 20
-
$7,085 SGD
View
Price last confirmed 46 days ago
Most Expensive
NZ Jewellers
d05e15f4-8009-4628-b689-e15d2496a80f · Oct 17
$7,085 SGD
$5,528 USD
View
Price last confirmed 20 days ago
20 more retailers have this diamond
Prices start from $2,526 SGDSave up to $3,395 SGD

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
$2,526 SGD