Radiant|Lab Grown|IGI

1.23ct D VS1 Radiant Lab Grown Diamond

ID • D/VS1 • IGI LG837640456

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

Certificate IGI LG837640456

Diamond specifications and retailer prices

From $179 USD
As of October 30, 2026
Save $621 USD (78%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $800 USD at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 1.23ct lab-grown radiant diamond

This 1.23ct lab-grown radiant sits in the classic one-carat band, graded D colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG837640456 or 837640456. Listed at 7 retailers as of October 30, 2026, with prices from $179 to $800, a $621 spread on the same certified stone. Brilliant Earth lists it at $800. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.23
Carat
D
Color
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle43.5°
Pavilion angle35.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG837640456
Dimensions7.57 × 5.26 × 3.60 mm
L/W Ratio1.44
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.57 mm5.26 mm1.23 ctD / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG837640456
Side View
Table 64.0%Crown 43.5°Girdle: MED-STKPavilion 35.9°Culet: NoneDepth 68.4%

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: Oct 30
Current: $800 USD|Low: $170 USD|High: $1,036 USD|Avg: $732 USD|-15.8%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 31, 2026
Retailer 5$170 USD
Retailer 4$297 USD
Retailer 6$373 USD
Retailer 2$752 USD
Retailer 3$766 USD
Brilliant Earth$800 USD
Retailer 7$889 USD
Retailer 8$1,036 USD

10 data points across 8 retailers

7 retailers$179 USD to $800 USD

Retailer 1
-
$170 USD
Price last confirmed 29 days ago
A
Retailer 2
-
$179 USD
View
A
Retailer 3
-
$297 USD
£234 GBP
View
Retailer 4
-
$704 USD
View
Price last confirmed 30 days ago
B+
Retailer 5
-
$752 USD
View
B+
Retailer 6
-
$766 USD
View
Most Expensive
B
Brilliant Earth
21477785A · Oct 30
$800 USD
View
6 more retailers have this diamond
Prices start from $179 USDSave up to $621 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 Radiant
$179 USD