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Round|Natural|GIA

1.21ct J SI1 Round Natural Diamond

VG • J/SI1 • GIA 2457091274

Certificate GIA 2457091274

Diamond specifications and retailer prices

From $2,837 SGD
As of November 6, 2026
Save $3,163 SGD (53%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $7,180 SGD at NZ Jewellers · As of September 28, 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 very-good cut grade and certified by GIA 2457091274. Listed at 16 retailers as of November 4, 2026, with a 111% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.21
Carat
J
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2457091274
Dimensions6.69 × 6.64 × 4.27 mm
L/W Ratio1.01
Top View
6.69 mm6.64 mm1.21 ctJ / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2457091274
Side View
Table 56.0%CrownGirdle: ThickPavilionCulet: NoneDepth 64.1%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $3,613 SGD|Low: $2,804 SGD|High: $6,089 SGD|Avg: $3,856 SGD|+2.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 5$2,837 SGD
Retailer 6$3,076 SGD
Retailer 7$3,169 SGD
Retailer 9$3,383 SGD
Retailer 1$3,613 SGD
Retailer 8$3,847 SGD
Retailer 3$4,191 SGD
Retailer 2$4,264 SGD
Retailer 4$6,000 SGD

42 data points across 9 retailers

16 retailers$2,837 SGD to $6,000 SGD

B+
Cheapest Retailer
-
$2,837 SGD
B+
Retailer 2
-
$3,076 SGD
View
B+
Retailer 3
-
$3,169 SGD
View
Final sale: no returns
B
Retailer 4
-
$3,383 SGD
View
Retailer 5
-
$3,435 SGD
View
Price last confirmed 29 days ago
Retailer 6
-
$3,435 SGD
View
Price last confirmed 29 days ago
Retailer 7
-
$3,567 SGD
View
Price last confirmed 38 days ago
B
Retailer 8
-
$3,613 SGD
View
B
Retailer 9
-
$3,614 SGD
View
B
Retailer 10
-
$3,665 SGD
View
Retailer 11
-
$3,847 SGD
View
Price last confirmed 30 days ago
Retailer 12
-
$3,963 SGD
View
Price last confirmed 38 days ago
B
Retailer 13
-
$4,191 SGD
View
B
Retailer 14
-
$4,264 SGD
View
B
Retailer 15
-
$6,000 SGD
View
Most Expensive
NZ Jewellers
824644bc-4f19-464d-8bcb-18b453c455d6 · Sep 28
$7,180 SGD
$5,602 USD
View
Price last confirmed 39 days ago
15 more retailers have this diamond
Prices start from $2,837 SGDSave up to $3,163 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.

B+
1.21ct Round
$2,837 SGD