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1.23ct E SI1 Round Lab Grown Diamond

ID • E/SI1 • IGI LG561281096

Shape and cutting style on the report: Round brilliant

Certificate IGI LG561281096

Diamond specifications and retailer prices

From €235 EUR
$262 USD
As of November 1, 2026
Save €581 EUR (71%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: €815 EUR at MOH London · As of October 29, 2026
View at MOH London

About this 1.23ct lab-grown round diamond

This 1.23ct 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 LG561281096 or 561281096. Listed at 7 retailers as of October 29, 2026, with prices from €235 to €815, a €581 spread on the same certified stone. MOH London lists it at €815. 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

1.23
Carat
E
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.4°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG561281096
Dimensions6.85 × 6.81 × 4.22 mm
L/W Ratio1.01
Girdle conditionFaceted
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 mm1.23 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG561281096
Side View
Table 57.0%Crown 35.4°Girdle: MED-STKPavilion 40.5°Culet: NoneDepth 61.7%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: €815 EUR|Low: €235 EUR|High: €825 EUR|Avg: €442 EUR|-1.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 1, 2026
Retailer 6€235 EUR
Retailer 2€303 EUR
Retailer 7€339 EUR
Retailer 5€394 EUR
Retailer 3€465 EUR
Retailer 4€607 EUR
MOH London€815 EUR

39 data points across 7 retailers

7 retailers€235 EUR to €815 EUR

B+
Cheapest Retailer
-
€235 EUR
$262 USD
A
Retailer 2
-
€303 EUR
£267 GBP
View
A
Retailer 3
-
€339 EUR
$379 USD
View
Retailer 4
-
€394 EUR
$440 USD
View
Price last confirmed 10 days ago
B+
Retailer 5
-
€465 EUR
$520 USD
View
B
Retailer 6
-
€607 EUR
$678 USD
View
Most Expensive
B
MOH London
LG561281096 · Oct 29
€815 EUR
£717 GBP
View
6 more retailers have this diamond
Prices start from €235 EURSave up to €581 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
1.23ct Round
€235 EUR