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Round|Lab Grown|IGI

12.33ct E SI1 Round Lab Grown Diamond

ID • E/SI1 • IGI LG577395300

Shape and cutting style on the report: Round brilliant

Certificate IGI LG577395300

Diamond specifications and retailer prices

From €1,366 EUR
£1,201 GBP
As of October 30, 2026
Save €8,723 EUR (86%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: €10,089 EUR at Adiamor · As of October 31, 2026
View at Adiamor

About this 12.33ct lab-grown round diamond

This 12.33ct lab-grown round sits in the over five carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG577395300 or 577395300. Listed at 12 retailers as of October 30, 2026, with prices from €1,366 to €10,089, a €8,723 spread on the same certified stone. Adiamor lists it at €10,089. 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

12.33
Carat
E
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.4°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG577395300
Dimensions14.99 × 14.92 × 9.08 mm
L/W Ratio1.00
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
14.99 mm14.92 mm12.33 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG577395300
Side View
Table 57.0%Crown 34.4°Girdle: MediumPavilion 40.7°Culet: NoneDepth 60.7%

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: Oct 30
Current: €10,089 EUR|Low: €1,366 EUR|High: €23,215 EUR|Avg: €6,185 EUR
Adiamor
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
Retailer 15
October 31, 2026
Retailer 10€1,366 EUR
Retailer 11€1,462 EUR
Retailer 8€1,591 EUR
Retailer 3€1,695 EUR
Retailer 12€1,848 EUR
Retailer 15€1,994 EUR
Retailer 14€2,219 EUR
Retailer 2€2,393 EUR
Retailer 13€2,695 EUR
Retailer 9€2,923 EUR
Retailer 4€3,178 EUR
Retailer 5€6,418 EUR
Adiamor€10,089 EUR
Retailer 7€18,206 EUR
Retailer 6€23,215 EUR

4 data points across 15 retailers

12 retailers€1,366 EUR to €10,089 EUR

A
Cheapest Retailer
-
€1,366 EUR
£1,201 GBP
A
Retailer 2
-
€1,462 EUR
$1,633 USD
View
A
Retailer 3
-
€1,591 EUR
$1,777 USD
View
A
Retailer 4
-
€1,695 EUR
$1,894 USD
View
A
Retailer 5
-
€1,848 EUR
$2,065 USD
View
A
Retailer 6
-
€1,994 EUR
HK$17,400 HKD
View
A
Retailer 7
-
€2,219 EUR
$2,479 USD
View
A
Retailer 8
-
€2,393 EUR
£2,105 GBP
View
A
Retailer 9
-
€2,695 EUR
View
A
Retailer 10
-
€2,923 EUR
$3,266 USD
View
A
Retailer 11
-
€3,178 EUR
$3,550 USD
View
Most Expensive
B
Adiamor
D-82828869 · Oct 31
€10,089 EUR
$11,271 USD
View
11 more retailers have this diamond
Prices start from €1,366 EURSave up to €8,723 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
12.33ct Round
€1,366 EUR