Radiant|Lab Grown|IGI

1.23ct D VS1 Radiant Lab Grown Diamond

ID • D/VS1 • IGI LG805676250

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

Certificate IGI LG805676250

Diamond specifications and retailer prices

From £163 GBP
$218 USD
As of October 31, 2026
Save £733 GBP (82%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £896 GBP 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 LG805676250 or 805676250. Listed at 13 retailers as of October 30, 2026, with prices from £163 to £896, a £733 spread on the same certified stone. Brilliant Earth lists it at £896. 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°
Pavilion angle35.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG805676250
Dimensions7.54 × 5.25 × 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
7.54 mm5.25 mm1.23 ctD / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG805676250
Side View
Table 64.0%Crown 43°Girdle: MediumPavilion 35.1°Culet: NoneDepth 68.6%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: £896 GBP|Low: £163 GBP|High: £903 GBP|Avg: £489 GBP|-0.8%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
October 30, 2026
Retailer 13£163 GBP
Retailer 2£242 GBP
Retailer 8£310 GBP
Retailer 4£315 GBP
Retailer 10£329 GBP
Retailer 6£330 GBP
Retailer 11£356 GBP
Retailer 9£440 GBP
Retailer 5£537 GBP
Retailer 12£583 GBP
Retailer 7£849 GBP
Retailer 3£879 GBP
Brilliant Earth£896 GBP

13 data points across 13 retailers

13 retailers£163 GBP to £896 GBP

A
Cheapest Retailer
-
£163 GBP
$218 USD
Final sale: no returns
A
Retailer 2
-
£242 GBP
View
A
Retailer 3
-
£310 GBP
ZAR 6,713 ZAR
View
A
Retailer 4
-
£315 GBP
$422 USD
View
Retailer 5
-
£329 GBP
€420 EUR
View
Price last confirmed 8 days ago
A
Retailer 6
-
£330 GBP
View
A
Retailer 7
-
£356 GBP
$477 USD
View
B+
Retailer 8
-
£440 GBP
A$908 AUD
View
Retailer 9
-
£537 GBP
$720 USD
View
Price last confirmed 12 days ago
B+
Retailer 10
-
£583 GBP
$781 USD
View
B
Retailer 11
-
£849 GBP
View
B
Retailer 12
-
£879 GBP
$1,178 USD
View
Most Expensive
B
Brilliant Earth
22162818A · Oct 30
£896 GBP
$1,200 USD
View
12 more retailers have this diamond
Prices start from £163 GBPSave up to £733 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
£163 GBP