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Radiant|Lab Grown|IGI

0.90ct D SI1 Radiant Lab Grown Diamond

VG • D/SI1 • IGI LG591389265

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

Certificate IGI LG591389265

Diamond specifications and retailer prices

From £107 GBP
$144 USD
As of October 30, 2026
Save £820 GBP (88%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £927 GBP at MOH London · As of October 27, 2026
View at MOH London

About this 0.9ct lab-grown radiant diamond

This 0.9ct lab-grown radiant sits in the just-under-one-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG591389265 or 591389265. Listed at 9 retailers as of October 27, 2026, with prices from £107 to £927, a £820 spread on the same certified stone. MOH London lists it at £927. 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

0.90
Carat
D
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37°
Pavilion angle32.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG591389265
Dimensions7.30 × 4.79 × 3.07 mm
L/W Ratio1.52
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
7.30 mm4.79 mm0.90 ctD / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG591389265
Side View
Table 56.0%Crown 37°Girdle: ThinPavilion 32.8°Culet: NoneDepth 64.1%

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: £927 GBP|Low: £102 GBP|High: £1,005 GBP|Avg: £416 GBP|-6.6%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 30, 2026
Retailer 6£107 GBP
Retailer 7£204 GBP
Retailer 5£215 GBP
Retailer 4£280 GBP
Retailer 3£293 GBP
Retailer 2£418 GBP
Retailer 8£726 GBP
MOH London£927 GBP

23 data points across 8 retailers

9 retailers£107 GBP to £927 GBP

A
Cheapest Retailer
-
£107 GBP
$144 USD
Final sale: no returns
A
Retailer 2
-
£215 GBP
$288 USD
View
B+
Retailer 3
-
£280 GBP
$375 USD
View
B+
Retailer 4
-
£293 GBP
$392 USD
View
B+
Retailer 5
-
£361 GBP
View
B
Retailer 6
-
£383 GBP
View
Retailer 7
-
£399 GBP
$534 USD
View
Price last confirmed 15 days ago
B
Retailer 8
-
£418 GBP
$560 USD
View
Most Expensive
B
MOH London
LG591389265 · Oct 26
£927 GBP
View
8 more retailers have this diamond
Prices start from £107 GBPSave up to £820 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
0.90ct Radiant
£107 GBP