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Radiant|Lab Grown|IGI

1.76ct F SI1 Radiant Lab Grown Diamond

EX • F/SI1 • IGI LG485150410

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

Certificate IGI LG485150410

Diamond specifications and retailer prices

From £400 GBP
$537 USD
As of November 1, 2026
Save £566 GBP (59%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: £966 GBP at MOH London · As of October 29, 2026
View at MOH London

About this 1.76ct lab-grown radiant diamond

This 1.76ct lab-grown radiant sits in the one-and-a-half to two carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG485150410 or 485150410. Listed at 5 retailers as of October 29, 2026, with prices from £400 to £966, a £566 spread on the same certified stone. MOH London lists it at £966. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.76
Carat
F
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle43.3°
Pavilion angle30°
OriginLab Grown
Grading LabIGI
CertificateIGI LG485150410
Dimensions8.31 × 6.03 × 3.92 mm
L/W Ratio1.38
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
8.31 mm6.03 mm1.76 ctF / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG485150410
Side View
Table 66.5%Crown 43.3°Girdle: MED-STKPavilion 30°Culet: NoneDepth 65.0%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 1
Current: £966 GBP|Low: £382 GBP|High: £973 GBP|Avg: £554 GBP|+0.6%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 2, 2026
Retailer 3£400 GBP
Retailer 2£458 GBP
Retailer 5£461 GBP
Retailer 4£499 GBP
MOH London£966 GBP

42 data points across 5 retailers

5 retailers£400 GBP to £966 GBP

A
Cheapest Retailer
-
£400 GBP
$537 USD
A
Retailer 2
-
£458 GBP
View
A
Retailer 3
-
£461 GBP
$619 USD
View
B+
Retailer 4
-
£499 GBP
$670 USD
View
Most Expensive
B
MOH London
LG485150410 · Oct 29
£966 GBP
View
4 more retailers have this diamond
Prices start from £400 GBPSave up to £566 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
1.76ct Radiant
£400 GBP