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Radiant|Lab Grown|IGI

0.87ct I SI1 Radiant Lab Grown Diamond

VG • I/SI1 • IGI LG407950377

Shape and cutting style on the report: Radiant cut

Certificate IGI LG407950377

Diamond specifications and retailer prices

From £388 GBP
As of November 6, 2026
Save £960 GBP (71%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £2,220 GBP at MOH London · As of November 5, 2026
View at MOH London

About this 0.87ct lab-grown radiant diamond

This 0.87ct 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 LG407950377 or 407950377. Listed at 11 retailers as of November 6, 2026, with a 247% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

0.87
Carat
I
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryGood
FluorescenceNone
Crown angle43.6°
Pavilion angle30.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG407950377
Dimensions6.16 × 4.83 × 3.17 mm
L/W Ratio1.28
Culet sizePointed
Cert comments
This Laboratory grown diamond was created by chemical vapor deposition process (CVD) Type IIa
Top View
6.16 mm4.83 mm0.87 ctI / SI1
OriginLab Grown
CutVery Good
PolishVery Good
SymmetryGood
FluorescenceNone
CertificateIGI LG407950377
Side View
Table 68.0%Crown 43.6°Girdle: Slightly ThickPavilion 30.8°Culet: NoneDepth 65.6%

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: £2,220 GBP|Low: £388 GBP|High: £2,253 GBP|Avg: £963 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
November 5, 2026
Retailer 2£388 GBP
Retailer 7£413 GBP
Retailer 12£462 GBP
Retailer 11£463 GBP
Retailer 8£513 GBP
Retailer 3£613 GBP
Retailer 10£791 GBP
Retailer 5£852 GBP
Retailer 6£1,323 GBP
Retailer 9£1,349 GBP
Retailer 4£2,060 GBP
MOH London£2,220 GBP

20 data points across 12 retailers

11 retailers£388 GBP to £1,349 GBP

B+
Cheapest Retailer
-
£388 GBP
B+
Retailer 2
-
£413 GBP
View
B
Retailer 3
-
£462 GBP
View
Final sale: no returns
B
Retailer 4
-
£463 GBP
View
Retailer 5
-
£513 GBP
View
Price last confirmed 22 days ago
B
Retailer 6
-
£513 GBP
View
B
Retailer 7
-
£791 GBP
View
B
Retailer 8
-
£852 GBP
View
C
Retailer 9
-
£1,323 GBP
View
C
Retailer 10
-
£1,349 GBP
View
Most Expensive
MOH London
LG407950377 · Nov 5
£2,220 GBP
View
Price under review
10 more retailers have this diamond
Prices start from £388 GBPSave up to £960 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+
0.87ct Radiant
£388 GBP