Radiant|Lab Grown|IGI

1.23ct D VS1 Radiant Lab Grown Diamond

EX • D/VS1 • IGI LG844677104

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

Certificate IGI LG844677104

Diamond specifications and retailer prices

From £151 GBP
$202 USD
As of October 28, 2026
Save £730 GBP (83%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £881 GBP at Brilliant Earth · As of October 28, 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 LG844677104 or 844677104. Listed at 9 retailers as of October 28, 2026, with prices from £151 to £881, a £730 spread on the same certified stone. Brilliant Earth lists it at £881. 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
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle25.4°
Pavilion angle36.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG844677104
Dimensions7.38 × 5.23 × 3.52 mm
L/W Ratio1.41
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
Top View
7.38 mm5.23 mm1.23 ctD / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG844677104
Side View
Table 64.0%Crown 25.4°Girdle: Slightly ThickPavilion 36.1°Culet: NoneDepth 67.3%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 28
Current: £347 GBP|Low: £151 GBP|High: £818 GBP|Avg: £375 GBP|-0.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 29, 2026
Retailer 4£151 GBP
Retailer 3£202 GBP
Retailer 2£264 GBP
Retailer 8£281 GBP
Retailer 1£347 GBP
Retailer 5£382 GBP
Retailer 6£533 GBP
Retailer 7£818 GBP

10 data points across 8 retailers

9 retailers£151 GBP to £881 GBP

A
Cheapest Retailer
-
£151 GBP
$202 USD
Final sale: no returns
A
Retailer 2
-
£202 GBP
View
A
Retailer 3
-
£264 GBP
View
A
Retailer 4
-
£281 GBP
$377 USD
View
A
Retailer 5
-
£347 GBP
$465 USD
View
A
Retailer 6
-
£382 GBP
A$788 AUD
View
B
Retailer 7
-
£533 GBP
$714 USD
View
B
Retailer 8
-
£818 GBP
$1,096 USD
View
Most Expensive
B
Brilliant Earth
22340661A · Oct 28
£881 GBP
$1,180 USD
View
8 more retailers have this diamond
Prices start from £151 GBPSave up to £730 GBP

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
£151 GBP