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Radiant|Lab Grown|IGI

1.23ct D VS1 Radiant Lab Grown Diamond

VG • D/VS1 • IGI LG739585776

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

Certificate IGI LG739585776

Diamond specifications and retailer prices

From £125 GBP
$168 USD
As of October 30, 2026
Save £1,084 GBP (90%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £1,209 GBP at Do Amore Diamonds · As of October 30, 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 LG739585776 or 739585776. Listed at 15 retailers as of October 30, 2026, with prices from £125 to £1,209, a £1,084 spread on the same certified stone. Do Amore Diamonds lists it at £1,209. 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 angle42.7°
Pavilion angle35°
OriginLab Grown
Grading LabIGI
CertificateIGI LG739585776
Dimensions7.81 × 5.33 × 3.46 mm
L/W Ratio1.47
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
7.81 mm5.33 mm1.23 ctD / VS1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG739585776
Side View
Table 64.0%Crown 42.7°Girdle: MediumPavilion 35°Culet: NoneDepth 64.9%

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: £1,209 GBP|Low: £121 GBP|High: £1,231 GBP|Avg: £428 GBP|-1.8%
Do Amore Diamonds
Retailer 2
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Retailer 20
October 31, 2026
Retailer 18£125 GBP
Retailer 3£141 GBP
Retailer 20£146 GBP
Retailer 5£180 GBP
Retailer 4£211 GBP
Retailer 11£235 GBP
Retailer 6£279 GBP
Retailer 8£281 GBP
Retailer 16£284 GBP
Retailer 7£294 GBP
Retailer 10£389 GBP
Retailer 15£420 GBP
Retailer 12£519 GBP
Retailer 17£529 GBP
Retailer 14£539 GBP
Retailer 19£553 GBP
Retailer 9£685 GBP
Retailer 13£809 GBP
Retailer 2£978 GBP
Do Amore Diamonds£1,209 GBP

27 data points across 20 retailers

15 retailers£125 GBP to £1,209 GBP

A
Cheapest Retailer
-
£125 GBP
$168 USD
A
Retailer 2
-
£141 GBP
$189 USD
View
Final sale: no returns
A
Retailer 3
-
£146 GBP
$195 USD
View
A
Retailer 4
-
£180 GBP
$241 USD
View
B+
Retailer 5
-
£211 GBP
$283 USD
View
A
Retailer 6
-
£279 GBP
$374 USD
View
A
Retailer 7
-
£284 GBP
€362 EUR
View
B+
Retailer 8
-
£420 GBP
A$865 AUD
View
Retailer 9
-
£519 GBP
$695 USD
View
Price last confirmed 52 days ago
B
Retailer 10
-
£529 GBP
$709 USD
View
B
Retailer 11
-
£539 GBP
A$1,111 AUD
View
B+
Retailer 12
-
£553 GBP
$741 USD
View
B
Retailer 13
-
£809 GBP
View
B
Retailer 14
-
£978 GBP
$1,310 USD
View
Most Expensive
B
Do Amore Diamonds
27-48A4AAABC · Oct 30
£1,209 GBP
$1,620 USD
View
14 more retailers have this diamond
Prices start from £125 GBPSave up to £1,084 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
£125 GBP