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 $2,118 USD
As of November 6, 2026
Save $1,869 USD (47%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $4,880 USD 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
Color
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

How it works →
A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 6
Current: $4,880 USD|Low: $2,057 USD|High: $4,880 USD|Avg: $2,837 USD|+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$2,110 USD
Retailer 5$2,118 USD
Retailer 3$2,169 USD
Retailer 8$2,276 USD
Retailer 4$2,527 USD
Retailer 7$2,609 USD
Retailer 9$2,747 USD
Retailer 10$2,825 USD
Retailer 2$3,987 USD
NZ Jewellers$4,880 USD

26 data points across 10 retailers

14 retailers$2,118 USD to $3,987 USD

Retailer 1
-
$2,110 USD
Price last confirmed 13 days ago
A
Retailer 2
-
$2,118 USD
View
A
Retailer 3
-
$2,169 USD
View
Retailer 4
-
$2,221 USD
View
Price last confirmed 102 days ago
Retailer 5
-
$2,276 USD
View
Price last confirmed 44 days ago
Retailer 6
-
$2,276 USD
View
Price last confirmed 15 days ago
Retailer 7
-
$2,334 USD
View
Price last confirmed 21 days ago
A
Retailer 8
-
$2,527 USD
View
A
Retailer 9
-
$2,609 USD
View
Retailer 10
-
$2,627 USD
View
Price last confirmed 45 days ago
Retailer 11
-
$2,747 USD
View
Price last confirmed 15 days ago
B
Retailer 12
-
$3,987 USD
View
Retailer 13
-
$4,759 USD
View
Price last confirmed 46 days ago
Most Expensive
NZ Jewellers
92be908b-536e-4fb8-a6af-c096640deb34 · Oct 20
$4,880 USD
View
Price last confirmed 16 days ago
13 more retailers have this diamond
Prices start from $2,118 USDSave up to $1,869 USD

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
$2,118 USD