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1.23ct J VVS1 Round Lab Grown Diamond

ID • J/VVS1 • IGI LG842644148

Shape and cutting style on the report: Round brilliant

Certificate IGI LG842644148

Diamond specifications and retailer prices

From $280 USD
As of October 30, 2026
Save $659 USD (70%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $939 USD at MOH London · As of October 26, 2026
View at MOH London

About this 1.23ct lab-grown round diamond

This 1.23ct lab-grown round sits in the classic one-carat band, graded J colour (near-colourless) and VVS1 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG842644148 or 842644148. Listed at 4 retailers as of October 26, 2026, with prices from $280 to $939, a $659 spread on the same certified stone. MOH London lists it at $939. 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
VVS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG842644148
Dimensions7.02 × 4.16 × 6.99 mm
L/W Ratio1.69
Girdle conditionFaceted
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II Light Blue
Top View
7.02 mm4.16 mm1.23 ctJ / VVS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG842644148
Side View
Table 58.0%Crown 33°Girdle: THN-MEDPavilion 40.7°Culet: NoneDepth 59.4%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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Price History

Last verified: Oct 30
Current: $939 USD|Low: $280 USD|High: $942 USD|Avg: $591 USD|-0.4%
MOH London
Retailer 2
Retailer 3
Retailer 4
October 25, 2026
Retailer 4$280 USD
Retailer 2$699 USD
Retailer 3$700 USD
MOH London$939 USD

4 data points across 4 retailers

4 retailers$280 USD to $939 USD

B+
Cheapest Retailer
-
$280 USD
B+
Retailer 2
-
$699 USD
View
B+
Retailer 3
-
$700 USD
View
Most Expensive
B+
MOH London
LG842644148 · Oct 26
$939 USD
£739 GBP
View
3 more retailers have this diamond
Prices start from $280 USDSave up to $659 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.

B+
1.23ct Round
$280 USD