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Round|Lab Grown|IGI

1.21ct E SI2 Round Lab Grown Diamond

ID • E/SI2 • IGI LG766645929

Shape and cutting style on the report: Round brilliant

Certificate IGI LG766645929

Diamond specifications and retailer prices

From €144 EUR
As of November 1, 2026
Save €694 EUR (83%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: €838 EUR at MOH London · As of November 2, 2026
View at MOH London

About this 1.21ct lab-grown round diamond

This 1.21ct lab-grown round sits in the classic one-carat band, graded E colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG766645929 or 766645929. Listed at 15 retailers as of November 1, 2026, with prices from €144 to €838, a €694 spread on the same certified stone. MOH London lists it at €838. 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
SI2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishVery Good
SymmetryExcellent
FluorescenceNone
Crown angle34.6°
Pavilion angle40.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG766645929
Dimensions6.89 × 6.85 × 4.14 mm
L/W Ratio1.01
Girdle conditionFaceted
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
6.89 mm6.85 mm1.21 ctE / SI2
OriginLab Grown
CutIdeal
PolishVery Good
SymmetryExcellent
FluorescenceNone
CertificateIGI LG766645929
Side View
Table 57.0%Crown 34.6°Girdle: MediumPavilion 40.1°Culet: NoneDepth 60.3%

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 1
Current: €838 EUR|Low: €139 EUR|High: €862 EUR|Avg: €374 EUR|-2.8%
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 4, 2026
Retailer 12€144 EUR
Retailer 13€162 EUR
Retailer 6€176 EUR
Retailer 5€179 EUR
Retailer 7€309 EUR
Retailer 10€313 EUR
Retailer 3€324 EUR
Retailer 2€379 EUR
Retailer 14€402 EUR
Retailer 4€406 EUR
Retailer 9€413 EUR
Retailer 8€465 EUR
Retailer 11€499 EUR
MOH London€838 EUR

36 data points across 14 retailers

15 retailers€144 EUR to €838 EUR

A
Cheapest Retailer
-
€144 EUR
A
Retailer 2
-
€162 EUR
View
Final sale: no returns
Retailer 3
-
€176 EUR
View
Price last confirmed 52 days ago
Retailer 4
-
€179 EUR
View
Price last confirmed 12 days ago
A
Retailer 5
-
€309 EUR
View
A
Retailer 6
-
€313 EUR
View
B+
Retailer 7
-
€324 EUR
View
B+
Retailer 8
-
€374 EUR
View
B+
Retailer 9
-
€379 EUR
View
B+
Retailer 10
-
€402 EUR
View
B+
Retailer 11
-
€406 EUR
View
B+
Retailer 12
-
€413 EUR
View
B
Retailer 13
-
€465 EUR
View
B+
Retailer 14
-
€499 EUR
View
Most Expensive
B
MOH London
LG766645929 · Nov 2
€838 EUR
£741 GBP
View
14 more retailers have this diamond
Prices start from €144 EURSave up to €694 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 Round
€144 EUR