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Radiant|Lab Grown|IGI

0.80ct I SI1 Radiant Lab Grown Diamond

VG • I/SI1 • IGI LG389919523

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

Certificate IGI LG389919523

Diamond specifications and retailer prices

From £359 GBP
As of November 6, 2026
Save £1,613 GBP (82%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £1,972 GBP at MOH London · As of November 5, 2026
View at MOH London

About this 0.8ct lab-grown radiant diamond

This 0.8ct lab-grown radiant sits in the just-under-one-carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG389919523 or 389919523. Listed at 11 retailers as of November 5, 2026, with prices from £359 to £1,972, a £1,613 spread on the same certified stone. MOH London lists it at £1,972. 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

0.80
Carat
I
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryGood
FluorescenceNone
OriginLab Grown
Grading LabIGI
CertificateIGI LG389919523
Dimensions5.79 × 4.59 × 3.21 mm
L/W Ratio1.26
Culet sizePointed
Cert comments
This Laboratory grown diamond was created by chemical vapor deposition process (CVD) and is type IIa
Top View
5.79 mm4.59 mm0.80 ctI / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryGood
FluorescenceNone
CertificateIGI LG389919523
Side View
Table 65.0%CrownGirdle: Slightly ThickPavilionCulet: NoneDepth 69.9%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: £1,972 GBP|Low: £359 GBP|High: £2,001 GBP|Avg: £875 GBP|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 5, 2026
Retailer 2£359 GBP
Retailer 8£382 GBP
Retailer 13£427 GBP
Retailer 12£428 GBP
Retailer 9£474 GBP
Retailer 3£575 GBP
Retailer 11£735 GBP
Retailer 4£769 GBP
Retailer 6£790 GBP
Retailer 7£1,222 GBP
Retailer 10£1,245 GBP
Retailer 5£1,902 GBP
MOH London£1,972 GBP

23 data points across 13 retailers

11 retailers£359 GBP to £1,972 GBP

B+
Cheapest Retailer
-
£359 GBP
B+
Retailer 2
-
£382 GBP
View
B
Retailer 3
-
£427 GBP
View
Final sale: no returns
B
Retailer 4
-
£428 GBP
View
B
Retailer 5
-
£474 GBP
View
Retailer 6
-
£474 GBP
View
Price last confirmed 22 days ago
B
Retailer 7
-
£735 GBP
View
B
Retailer 8
-
£790 GBP
View
C
Retailer 9
-
£1,222 GBP
View
C
Retailer 10
-
£1,245 GBP
View
Most Expensive
C
MOH London
LG389919523 · Nov 5
£1,972 GBP
View
10 more retailers have this diamond
Prices start from £359 GBPSave up to £1,613 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.

B+
0.80ct Radiant
£359 GBP