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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 $229 SGD
$179 USD
As of October 30, 2026
Save $794 SGD (78%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $1,023 SGD 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 $229 to $1,023, a $794 spread on the same certified stone. Brilliant Earth lists it at $1,023. 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
Colour
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: $1,023 SGD|Low: $217 SGD|High: $1,325 SGD|Avg: $936 SGD|-15.8%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 31, 2026
Retailer 5$217 SGD
Retailer 4$379 SGD
Retailer 6$477 SGD
Retailer 2$961 SGD
Retailer 3$979 SGD
Brilliant Earth$1,023 SGD
Retailer 7$1,137 SGD
Retailer 8$1,325 SGD

10 data points across 8 retailers

7 retailers$229 SGD to $1,023 SGD

Retailer 1
-
$217 SGD
$170 USD
Price last confirmed 29 days ago
A
Retailer 2
-
$229 SGD
$179 USD
View
A
Retailer 3
-
$379 SGD
£234 GBP
View
Retailer 4
-
$900 SGD
$704 USD
View
Price last confirmed 30 days ago
B+
Retailer 5
-
$961 SGD
$752 USD
View
B+
Retailer 6
-
$979 SGD
$766 USD
View
Most Expensive
B
Brilliant Earth
21477785A · Oct 30
$1,023 SGD
$800 USD
View
6 more retailers have this diamond
Prices start from $229 SGDSave up to $794 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 Radiant
$229 SGD