Radiant|Lab Grown|IGI

1.23ct G VS1 Radiant Lab Grown Diamond

VG • G/VS1 • IGI LG612346256

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG612346256

Diamond specifications and retailer prices

From $351 USD
As of October 28, 2026
Save $979 USD (74%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: $1,330 USD at Jared · As of October 28, 2026
View at Jared

About this 1.23ct lab-grown radiant diamond

This 1.23ct lab-grown radiant sits in the classic one-carat band, graded G colour (near-colourless) and VS1 clarity (very-slightly-included), with a very-good cut grade and certified by IGI LG612346256 or 612346256. Listed at 5 retailers as of October 28, 2026, with prices from $351 to $1,330, a $979 spread on the same certified stone. Jared lists it at $1,330. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.23
Carat
G
Color
VS1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle45.5°
Pavilion angle34.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG612346256
Dimensions7.64 × 5.21 × 3.56 mm
L/W Ratio1.47
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
7.64 mm5.21 mm1.23 ctG / VS1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG612346256
Side View
Table 68.0%Crown 45.5°Girdle: MediumPavilion 34.8°Culet: NoneDepth 68.3%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 28
Current: $1,330 USD|Low: $332 USD|High: $1,650 USD|Avg: $713 USD|-19.4%
Jared
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 29, 2026
Retailer 3$351 USD
Retailer 8$380 USD
Retailer 6$437 USD
Retailer 9$500 USD
Retailer 10$593 USD
Retailer 4$656 USD
Retailer 7$855 USD
Retailer 5$910 USD
Retailer 2$997 USD
Jared$1,330 USD

14 data points across 10 retailers

5 retailers$351 USD to $1,330 USD

B+
Cheapest Retailer
-
$351 USD
B
Retailer 2
-
$656 USD
View
B
Retailer 3
-
$910 USD
View
B
Retailer 4
-
$997 USD
£785 GBP
View
Most Expensive
B
Jared
149859379 · Oct 28
$1,330 USD
View
4 more retailers have this diamond
Prices start from $351 USDSave up to $979 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 Radiant
$351 USD