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Round|Lab Grown|IGI

1.23ct E SI1 Round Lab Grown Diamond

ID • E/SI1 • IGI LG792617957

Shape and cutting style on the report: Round brilliant

Certificate IGI LG792617957

Diamond specifications and retailer prices

From €277 EUR
$309 USD
As of October 30, 2026
Save €798 EUR (74%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: €1,074 EUR at MOH London · As of November 1, 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 LG792617957 or 792617957. Listed at 7 retailers as of October 30, 2026, with prices from €277 to €1,074, a €798 spread on the same certified stone. MOH London lists it at €1,074. 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 angle33.4°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG792617957
Dimensions7.00 × 7.03 × 4.17 mm
L/W Ratio1.00
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.00 mm7.03 mm1.23 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG792617957
Side View
Table 59.0%Crown 33.4°Girdle: THN-MEDPavilion 40.9°Culet: NoneDepth 59.4%

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: Oct 30
Current: €1,074 EUR|Low: €265 EUR|High: €1,080 EUR|Avg: €613 EUR|+15.0%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 1, 2026
Retailer 3€277 EUR
Retailer 6€415 EUR
Retailer 2€507 EUR
Retailer 4€527 EUR
Retailer 7€713 EUR
Retailer 5€1,015 EUR
MOH London€1,074 EUR

29 data points across 7 retailers

7 retailers€277 EUR to €1,074 EUR

A
Cheapest Retailer
-
€277 EUR
$309 USD
B+
Retailer 2
-
€415 EUR
$464 USD
View
B
Retailer 3
-
€507 EUR
£446 GBP
View
B+
Retailer 4
-
€527 EUR
$589 USD
View
B
Retailer 5
-
€713 EUR
$797 USD
View
B
Retailer 6
-
€1,015 EUR
$1,134 USD
View
Most Expensive
B
MOH London
LG792617957 · Nov 1
€1,074 EUR
£945 GBP
View
6 more retailers have this diamond
Prices start from €277 EURSave up to €798 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
€277 EUR