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Round|Natural|IGI

1.23ct J VS1 Round Natural Diamond

EX • J/VS1 • IGI 654416413

Shape and cutting style on the report: Round brilliant

Certificate IGI 654416413

Diamond specifications and retailer prices

From $2,735 SGD
As of November 5, 2026
Save $1,018 SGD (27%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $6,563 SGD at NZ Jewellers · As of October 17, 2026
View at NZ Jewellers

About this 1.23ct natural round diamond

This 1.23ct 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 654416413. Listed at 17 retailers as of November 5, 2026, with a 37% 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

1.23
Carat
J
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.6°
Pavilion angle40.8°
OriginNatural
Grading LabIGI
CertificateIGI 654416413
Dimensions6.88 × 6.93 × 4.17 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
IDEAL CUT ROUND BRILLIANT
Top View
6.88 mm6.93 mm1.23 ctJ / VS1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 654416413
Side View
Table 60.0%Crown 33.6°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 60.4%

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 5
Current: $3,328 SGD|Low: $2,358 SGD|High: $5,566 SGD|Avg: $3,435 SGD|+3.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 7$2,735 SGD
Retailer 10$2,830 SGD
Retailer 8$2,837 SGD
Retailer 6$3,025 SGD
Retailer 2$3,066 SGD
Retailer 1$3,328 SGD
Retailer 4$3,474 SGD
Retailer 5$3,696 SGD
Retailer 3$3,753 SGD
Retailer 9$5,529 SGD

30 data points across 10 retailers

17 retailers$2,735 SGD to $3,753 SGD

A
Cheapest Retailer
-
$2,735 SGD
A
Retailer 2
-
$2,837 SGD
View
A
Retailer 3
-
$3,025 SGD
View
Retailer 4
-
$3,066 SGD
View
Price last confirmed 56 days ago
Retailer 5
-
$3,066 SGD
View
Price last confirmed 44 days ago
Retailer 6
-
$3,139 SGD
View
Price last confirmed 21 days ago
Retailer 7
-
$3,139 SGD
View
Price last confirmed 19 days ago
A
Retailer 8
-
$3,328 SGD
View
B+
Retailer 9
-
$3,474 SGD
View
Retailer 10
-
$3,537 SGD
View
Price last confirmed 60 days ago
Retailer 11
-
$3,537 SGD
View
Price last confirmed 45 days ago
B+
Retailer 12
-
$3,696 SGD
View
B+
Retailer 13
-
$3,753 SGD
View
Retailer 14
-
$5,529 SGD
View
Price last confirmed 16 days ago
Retailer 15
-
$6,408 SGD
View
Price last confirmed 57 days ago
Retailer 16
-
$6,408 SGD
View
Price last confirmed 46 days ago
Most Expensive
NZ Jewellers
419cd0ef-59bd-4bf4-b2be-aa5af84a668b · Oct 17
$6,563 SGD
$5,121 USD
View
Price last confirmed 20 days ago
16 more retailers have this diamond
Prices start from $2,735 SGDSave up to $1,018 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
1.23ct Round
$2,735 SGD