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Radiant|Lab Grown|IGI

1.00ct D SI1 Radiant Lab Grown Diamond

ID • D/SI1 • IGI LG786681221

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

Certificate IGI LG786681221

Diamond specifications and retailer prices

From £102 GBP
As of November 6, 2026
Save £953 GBP (90%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £1,055 GBP at MOH London · As of November 5, 2026
View at MOH London

About this 1ct lab-grown radiant diamond

This 1ct lab-grown radiant sits in the classic one-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG786681221 or 786681221. Listed at 13 retailers as of November 5, 2026, with prices from £102 to £1,055, a £953 spread on the same certified stone. MOH London lists it at £1,055. 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

1.00
Carat
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.5°
Pavilion angle33.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG786681221
Dimensions7.51 × 4.85 × 3.16 mm
L/W Ratio1.55
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.51 mm4.85 mm1.00 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG786681221
Side View
Table 65.0%Crown 37.5°Girdle: STK-THKPavilion 33.8°Culet: NoneDepth 65.2%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 6
Current: £1,055 GBP|Low: £97 GBP|High: £1,064 GBP|Avg: £315 GBP|+0.9%
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
Retailer 14
November 6, 2026
Retailer 13£102 GBP
Retailer 9£119 GBP
Retailer 4£127 GBP
Retailer 5£128 GBP
Retailer 2£213 GBP
Retailer 11£232 GBP
Retailer 6£234 GBP
Retailer 14£237 GBP
Retailer 3£241 GBP
Retailer 12£310 GBP
Retailer 7£325 GBP
Retailer 8£407 GBP
Retailer 10£430 GBP
MOH London£1,055 GBP

45 data points across 14 retailers

13 retailers£102 GBP to £1,055 GBP

A
Cheapest Retailer
-
£102 GBP
A
Retailer 2
-
£119 GBP
View
A
Retailer 3
-
£127 GBP
View
Retailer 4
-
£128 GBP
View
Price last confirmed 13 days ago
A
Retailer 5
-
£213 GBP
View
A
Retailer 6
-
£232 GBP
View
A
Retailer 7
-
£237 GBP
View
A
Retailer 8
-
£241 GBP
View
B+
Retailer 9
-
£310 GBP
View
B+
Retailer 10
-
£325 GBP
View
B+
Retailer 11
-
£407 GBP
View
B
Retailer 12
-
£430 GBP
View
Most Expensive
B
MOH London
LG786681221 · Nov 5
£1,055 GBP
View
12 more retailers have this diamond
Prices start from £102 GBPSave up to £953 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
1.00ct Radiant
£102 GBP