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1.26ct E SI1 Round Lab Grown Diamond

EX • E/SI1 • IGI LG758581221

Shape and cutting style on the report: Round brilliant

Certificate IGI LG758581221

Diamond specifications and retailer prices

From €146 EUR
As of November 1, 2026
Save €701 EUR (83%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: €847 EUR at MOH London · As of November 2, 2026
View at MOH London

About this 1.26ct lab-grown round diamond

This 1.26ct lab-grown round sits in the one-and-a-quarter to one-and-a-half carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG758581221 or 758581221. Listed at 11 retailers as of November 1, 2026, with prices from €146 to €847, a €701 spread on the same certified stone. MOH London lists it at €847. 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

1.26
Carat
E
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG758581221
Dimensions6.87 × 6.84 × 4.30 mm
L/W Ratio1.00
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
6.87 mm6.84 mm1.26 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG758581221
Side View
Table 57.0%Crown 35.5°Girdle: MED-STKPavilion 41°Culet: NoneDepth 62.8%

Caratlytics Score

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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: €847 EUR|Low: €145 EUR|High: €887 EUR|Avg: €369 EUR|-4.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 2, 2026
Retailer 7€146 EUR
Retailer 8€164 EUR
Retailer 12€187 EUR
Retailer 2€312 EUR
Retailer 5€317 EUR
Retailer 11€326 EUR
Retailer 10€354 EUR
Retailer 9€405 EUR
Retailer 4€423 EUR
Retailer 6€467 EUR
Retailer 3€526 EUR
MOH London€847 EUR

34 data points across 12 retailers

11 retailers€146 EUR to €847 EUR

A
Cheapest Retailer
-
€146 EUR
Retailer 2
-
€187 EUR
View
Price last confirmed 12 days ago
A
Retailer 3
-
€312 EUR
View
A
Retailer 4
-
€317 EUR
View
B+
Retailer 5
-
€326 EUR
View
A
Retailer 6
-
€354 EUR
View
B+
Retailer 7
-
€405 EUR
View
Retailer 8
-
€423 EUR
View
Price last confirmed 40 days ago
B+
Retailer 9
-
€467 EUR
View
B
Retailer 10
-
€526 EUR
View
Most Expensive
B
MOH London
LG758581221 · Nov 2
€847 EUR
£749 GBP
View
10 more retailers have this diamond
Prices start from €146 EURSave up to €701 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
1.26ct Round
€146 EUR