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Round|Natural|IGI

1.21ct J VS1 Round Natural Diamond

EX • J/VS1 • IGI 642405173

Shape and cutting style on the report: Round brilliant

Certificate IGI 642405173

Diamond specifications and retailer prices

From $2,682 SGD
As of November 4, 2026
Save $3,527 SGD (57%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $6,284 SGD at NZ Jewellers · As of September 21, 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 VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI 642405173. Listed at 18 retailers as of November 4, 2026, with a 131% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.21
Carat
J
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle41°
OriginNatural
Grading LabIGI
CertificateIGI 642405173
Dimensions6.80 × 6.86 × 4.25 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
IDEAL CUT ROUND BRILLIANT
Top View
6.80 mm6.86 mm1.21 ctJ / VS1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 642405173
Side View
Table 57.0%Crown 35.5°Girdle: MediumPavilion 41°Culet: NoneDepth 62.1%

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 4
Current: $6,209 SGD|Low: $2,682 SGD|High: $6,435 SGD|Avg: $3,552 SGD|-3.5%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
November 6, 2026
Retailer 12$2,682 SGD
Retailer 2$2,763 SGD
Retailer 6$2,774 SGD
Retailer 5$2,785 SGD
Retailer 3$2,970 SGD
Retailer 4$2,970 SGD
Retailer 7$3,078 SGD
Retailer 14$3,106 SGD
Retailer 11$3,264 SGD
Retailer 8$3,407 SGD
Retailer 15$3,427 SGD
Retailer 9$3,624 SGD
Retailer 10$3,684 SGD
Retailer 13$5,188 SGD
NZ Jewellers$6,209 SGD

24 data points across 15 retailers

18 retailers$2,682 SGD to $6,209 SGD

A
Cheapest Retailer
-
$2,682 SGD
A
Retailer 2
-
$2,763 SGD
View
A
Retailer 3
-
$2,785 SGD
View
Retailer 4
-
$2,928 SGD
View
Price last confirmed 102 days ago
A
Retailer 5
-
$2,970 SGD
View
A
Retailer 6
-
$2,970 SGD
View
Retailer 7
-
$3,005 SGD
View
Price last confirmed 15 days ago
Retailer 8
-
$3,078 SGD
View
Price last confirmed 21 days ago
A
Retailer 9
-
$3,106 SGD
View
A
Retailer 10
-
$3,264 SGD
View
B+
Retailer 11
-
$3,407 SGD
View
B+
Retailer 12
-
$3,427 SGD
View
Retailer 13
-
$3,552 SGD
View
Price last confirmed 16 days ago
B+
Retailer 14
-
$3,624 SGD
View
B+
Retailer 15
-
$3,684 SGD
View
B
Retailer 16
-
$5,188 SGD
View
B
Retailer 17
-
$6,209 SGD
View
Most Expensive
NZ Jewellers
d7fcadd0-0be9-40fd-a6c5-aa36aa4a8791 · Sep 21
$6,284 SGD
$4,920 USD
View
Price last confirmed 45 days ago
17 more retailers have this diamond
Prices start from $2,682 SGDSave up to $3,527 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
$2,682 SGD