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Round|Natural|IGI

1.23ct J VS1 Round Natural Diamond

EX • J/VS1 • IGI 670478960

Shape and cutting style on the report: Round brilliant

Certificate IGI 670478960

Diamond specifications and retailer prices

From $2,714 SGD
As of November 6, 2026
Save $2,395 SGD (47%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $6,254 SGD at NZ Jewellers · As of October 20, 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 670478960. Listed at 14 retailers as of November 2, 2026, with a 88% 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 angle34.9°
Pavilion angle41.3°
OriginNatural
Grading LabIGI
CertificateIGI 670478960
Dimensions6.84 × 6.80 × 4.29 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Top View
6.84 mm6.80 mm1.23 ctJ / VS1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 670478960
Side View
Table 57.0%Crown 34.9°Girdle: MED-STKPavilion 41.3°Culet: NoneDepth 62.9%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 6
Current: $6,254 SGD|Low: $2,636 SGD|High: $6,254 SGD|Avg: $3,636 SGD|+2.5%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 2, 2026
Retailer 6$2,704 SGD
Retailer 5$2,714 SGD
Retailer 3$2,780 SGD
Retailer 8$2,917 SGD
Retailer 4$3,239 SGD
Retailer 7$3,344 SGD
Retailer 9$3,521 SGD
Retailer 10$3,621 SGD
Retailer 2$5,110 SGD
NZ Jewellers$6,254 SGD

26 data points across 10 retailers

14 retailers$2,714 SGD to $5,110 SGD

Retailer 1
-
$2,704 SGD
Price last confirmed 13 days ago
A
Retailer 2
-
$2,714 SGD
View
A
Retailer 3
-
$2,780 SGD
View
Retailer 4
-
$2,846 SGD
View
Price last confirmed 102 days ago
Retailer 5
-
$2,917 SGD
View
Price last confirmed 44 days ago
Retailer 6
-
$2,917 SGD
View
Price last confirmed 15 days ago
Retailer 7
-
$2,991 SGD
View
Price last confirmed 21 days ago
A
Retailer 8
-
$3,239 SGD
View
A
Retailer 9
-
$3,344 SGD
View
Retailer 10
-
$3,367 SGD
View
Price last confirmed 45 days ago
Retailer 11
-
$3,521 SGD
View
Price last confirmed 15 days ago
B
Retailer 12
-
$5,110 SGD
View
Retailer 13
-
$6,099 SGD
View
Price last confirmed 46 days ago
Most Expensive
NZ Jewellers
92be908b-536e-4fb8-a6af-c096640deb34 · Oct 20
$6,254 SGD
$4,880 USD
View
Price last confirmed 17 days ago
13 more retailers have this diamond
Prices start from $2,714 SGDSave up to $2,395 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
1.23ct Round
$2,714 SGD