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Radiant|Lab Grown|IGI

1.21ct E SI1 Radiant Lab Grown Diamond

ID • E/SI1 • IGI LG850681876

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

Certificate IGI LG850681876

Diamond specifications and retailer prices

From €210 EUR
As of November 6, 2026
Save €550 EUR (72%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: €760 EUR at MOH London · As of November 4, 2026
View at MOH London

About this 1.21ct lab-grown radiant diamond

This 1.21ct lab-grown radiant sits in the classic one-carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG850681876 or 850681876. Listed at 7 retailers as of November 4, 2026, with prices from €210 to €760, a €550 spread on the same certified stone. MOH London lists it at €760. 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

1.21
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle47.2°
Pavilion angle34.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG850681876
Dimensions7.47 × 5.26 × 3.56 mm
L/W Ratio1.42
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.47 mm5.26 mm1.21 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG850681876
Side View
Table 66.0%Crown 47.2°Girdle: Slightly ThickPavilion 34.9°Culet: NoneDepth 67.7%

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: Nov 6
Current: €760 EUR|Low: €147 EUR|High: €760 EUR|Avg: €382 EUR
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 5€147 EUR
Retailer 2€210 EUR
Retailer 8€222 EUR
Retailer 7€356 EUR
Retailer 6€391 EUR
Retailer 4€457 EUR
Retailer 3€600 EUR
MOH London€760 EUR

7 data points across 8 retailers

7 retailers€210 EUR to €760 EUR

A
Cheapest Retailer
-
€210 EUR
B+
Retailer 2
-
€222 EUR
View
A
Retailer 3
-
€356 EUR
View
B+
Retailer 4
-
€391 EUR
View
B+
Retailer 5
-
€457 EUR
View
B+
Retailer 6
-
€600 EUR
View
Most Expensive
B
MOH London
LG850681876 · Nov 4
€760 EUR
£668 GBP
View
6 more retailers have this diamond
Prices start from €210 EURSave up to €550 EUR

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
1.21ct Radiant
€210 EUR