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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 $255 AUD
$179 USD
As of October 30, 2026
Save $884 AUD (78%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $1,139 AUD 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 $255 to $1,139, a $884 spread on the same certified stone. Brilliant Earth lists it at $1,139. 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: $1,139 AUD|Low: $242 AUD|High: $1,475 AUD|Avg: $1,042 AUD|-15.8%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 31, 2026
Retailer 5$242 AUD
Retailer 4$422 AUD
Retailer 6$531 AUD
Retailer 2$1,071 AUD
Retailer 3$1,090 AUD
Brilliant Earth$1,139 AUD
Retailer 7$1,266 AUD
Retailer 8$1,475 AUD

10 data points across 8 retailers

7 retailers$255 AUD to $1,139 AUD

Retailer 1
-
$242 AUD
$170 USD
Price last confirmed 29 days ago
A
Retailer 2
-
$255 AUD
$179 USD
View
A
Retailer 3
-
$422 AUD
£234 GBP
View
Retailer 4
-
$1,002 AUD
$704 USD
View
Price last confirmed 31 days ago
B+
Retailer 5
-
$1,071 AUD
$752 USD
View
B+
Retailer 6
-
$1,090 AUD
$766 USD
View
Most Expensive
B
Brilliant Earth
21477785A · Oct 30
$1,139 AUD
$800 USD
View
6 more retailers have this diamond
Prices start from $255 AUDSave up to $884 AUD

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
$255 AUD