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Round|Lab Grown|IGI

1.21ct E SI1 Round Lab Grown Diamond

ID • E/SI1 • IGI LG567369590

Shape and cutting style on the report: Round brilliant

Certificate IGI LG567369590

Diamond specifications and retailer prices

From €147 EUR
As of November 5, 2026
Save €703 EUR (83%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: €850 EUR at MOH London · As of November 4, 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 SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG567369590 or 567369590. Listed at 17 retailers as of November 4, 2026, with prices from €147 to €850, a €703 spread on the same certified stone. MOH London lists it at €850. 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 angle35.3°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG567369590
Dimensions6.85 × 6.81 × 4.23 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
6.85 mm6.81 mm1.21 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG567369590
Side View
Table 57.5%Crown 35.3°Girdle: MED-STKPavilion 41°Culet: NoneDepth 62.0%

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 5
Current: €850 EUR|Low: €141 EUR|High: €862 EUR|Avg: €399 EUR|-1.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 7€147 EUR
Retailer 8€183 EUR
Retailer 9€249 EUR
Retailer 4€315 EUR
Retailer 2€319 EUR
Retailer 3€352 EUR
Retailer 10€404 EUR
Retailer 5€601 EUR
Retailer 6€619 EUR
MOH London€850 EUR

44 data points across 10 retailers

17 retailers€147 EUR to €850 EUR

A
Cheapest Retailer
-
€147 EUR
A
Retailer 2
-
€164 EUR
View
Final sale: no returns
A
Retailer 3
-
€170 EUR
View
A
Retailer 4
-
€183 EUR
View
Retailer 5
-
€183 EUR
View
Price last confirmed 12 days ago
A
Retailer 6
-
€205 EUR
View
B+
Retailer 7
-
€249 EUR
View
A
Retailer 8
-
€315 EUR
View
A
Retailer 9
-
€319 EUR
View
A
Retailer 10
-
€331 EUR
View
A
Retailer 11
-
€352 EUR
View
Retailer 12
-
€401 EUR
View
Price last confirmed 47 days ago
B+
Retailer 13
-
€404 EUR
View
B
Retailer 14
-
€586 EUR
View
B
Retailer 15
-
€601 EUR
View
B
Retailer 16
-
€619 EUR
View
Most Expensive
B
MOH London
LG567369590 · Nov 4
€850 EUR
£751 GBP
View
16 more retailers have this diamond
Prices start from €147 EURSave up to €703 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
€147 EUR