Radiant|Lab Grown|IGI

1.23ct D VS1 Radiant Lab Grown Diamond

VG • D/VS1 • IGI LG744522308

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

Certificate IGI LG744522308

Diamond specifications and retailer prices

From £137 GBP
$183 USD
As of October 30, 2026
Save £1,042 GBP (88%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £1,179 GBP at Do Amore Diamonds · As of October 29, 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 LG744522308 or 744522308. Listed at 13 retailers as of October 29, 2026, with prices from £137 to £1,179, a £1,042 spread on the same certified stone. Do Amore Diamonds lists it at £1,179. 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 angle47.3°
Pavilion angle36.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG744522308
Dimensions7.22 × 5.29 × 3.75 mm
L/W Ratio1.36
Culet sizePointed
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
7.22 mm5.29 mm1.23 ctD / VS1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG744522308
Side View
Table 60.0%Crown 47.3°Girdle: MediumPavilion 36.8°Culet: NoneDepth 70.9%

Caratlytics Score

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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: £1,179 GBP|Low: £129 GBP|High: £1,224 GBP|Avg: £457 GBP|+5.4%
Do Amore Diamonds
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 26, 2026
Retailer 7£137 GBP
Retailer 10£179 GBP
Retailer 11£210 GBP
Retailer 4£263 GBP
Retailer 13£289 GBP
Retailer 9£340 GBP
Retailer 2£410 GBP
Retailer 6£423 GBP
Retailer 3£529 GBP
Retailer 12£562 GBP
Retailer 5£609 GBP
Retailer 8£786 GBP
Do Amore Diamonds£1,179 GBP

23 data points across 13 retailers

13 retailers£137 GBP to £1,179 GBP

Retailer 1
-
£122 GBP
$163 USD
Price last confirmed 28 days ago
A
Retailer 2
-
£137 GBP
$183 USD
View
Final sale: no returns
Retailer 3
-
£143 GBP
$191 USD
View
Price last confirmed 32 days ago
A
Retailer 4
-
£179 GBP
$239 USD
View
B+
Retailer 5
-
£210 GBP
$279 USD
View
A
Retailer 6
-
£340 GBP
$453 USD
View
B+
Retailer 7
-
£410 GBP
A$839 AUD
View
B+
Retailer 8
-
£423 GBP
$563 USD
View
Retailer 9
-
£529 GBP
$705 USD
View
Price last confirmed 25 days ago
Retailer 10
-
£562 GBP
$748 USD
View
Price last confirmed 29 days ago
B+
Retailer 11
-
£562 GBP
$749 USD
View
B
Retailer 12
-
£786 GBP
View
Most Expensive
B
Do Amore Diamonds
27-085B4B35E · Oct 29
£1,179 GBP
$1,570 USD
View
12 more retailers have this diamond
Prices start from £137 GBPSave up to £1,042 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
£137 GBP