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Radiant|Lab Grown|IGI

1.23ct D VS1 Radiant Lab Grown Diamond

VG • D/VS1 • IGI LG842603876

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

Certificate IGI LG842603876

Diamond specifications and retailer prices

From £122 GBP
$163 USD
As of October 30, 2026
Save £1,050 GBP (90%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £1,172 GBP at Do Amore Diamonds · As of October 31, 2026
View at Do Amore Diamonds

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 very-good cut grade and certified by IGI LG842603876 or 842603876. Listed at 8 retailers as of October 30, 2026, with prices from £122 to £1,172, a £1,050 spread on the same certified stone. Do Amore Diamonds lists it at £1,172. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.23
Carat
D
Colour
VS1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle48°
Pavilion angle35.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG842603876
Dimensions7.37 × 5.40 × 3.56 mm
L/W Ratio1.36
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
7.37 mm5.40 mm1.23 ctD / VS1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG842603876
Side View
Table 67.0%Crown 48°Girdle: Slightly ThickPavilion 35.3°Culet: NoneDepth 65.9%

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: £1,172 GBP|Low: £122 GBP|High: £1,172 GBP|Avg: £360 GBP
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 31, 2026
Retailer 6£122 GBP
Retailer 5£137 GBP
Retailer 7£208 GBP
Retailer 4£224 GBP
Retailer 2£338 GBP
Retailer 3£530 GBP
Retailer 8£559 GBP
Do Amore Diamonds£1,172 GBP

2 data points across 8 retailers

8 retailers£122 GBP to £1,172 GBP

A
Cheapest Retailer
-
£122 GBP
$163 USD
A
Retailer 2
-
£137 GBP
$183 USD
View
Final sale: no returns
B+
Retailer 3
-
£208 GBP
$279 USD
View
A
Retailer 4
-
£224 GBP
View
A
Retailer 5
-
£338 GBP
$453 USD
View
B
Retailer 6
-
£530 GBP
$710 USD
View
B+
Retailer 7
-
£559 GBP
$749 USD
View
Most Expensive
B
Do Amore Diamonds
27-6A3D6B802 · Oct 31
£1,172 GBP
$1,570 USD
View
7 more retailers have this diamond
Prices start from £122 GBPSave up to £1,050 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
£122 GBP