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Round|Lab Grown|IGI

1.18ct I SI1 Round Lab Grown Diamond

ID • I/SI1 • IGI LG375933901

Shape and cutting style on the report: Round brilliant

Certificate IGI LG375933901

Diamond specifications and retailer prices

From €336 EUR
$375 USD
As of November 1, 2026
Save €633 EUR (65%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: €969 EUR at MOH London · As of November 1, 2026
View at MOH London

About this 1.18ct lab-grown round diamond

This 1.18ct lab-grown round sits in the classic one-carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG375933901 or 375933901. Listed at 5 retailers as of November 1, 2026, with prices from €336 to €969, a €633 spread on the same certified stone. MOH London lists it at €969. 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

1.18
Carat
I
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG375933901
Dimensions6.77 × 6.74 × 4.19 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Chemical Vapor Deposition (CVD) laboratory grown diamond is classified as Type IIa
Top View
6.77 mm6.74 mm1.18 ctI / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG375933901
Side View
Table 55.5%Crown 36°Girdle: MediumPavilion 40.2°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 1
Current: €969 EUR|Low: €313 EUR|High: €981 EUR|Avg: €516 EUR
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 1, 2026
Retailer 3€336 EUR
Retailer 2€376 EUR
Retailer 5€422 EUR
Retailer 4€477 EUR
MOH London€969 EUR

11 data points across 5 retailers

5 retailers€336 EUR to €969 EUR

A
Cheapest Retailer
-
€336 EUR
$375 USD
Retailer 2
-
€376 EUR
$420 USD
View
Price last confirmed 13 days ago
A
Retailer 3
-
€422 EUR
$472 USD
View
A
Retailer 4
-
€477 EUR
$533 USD
View
Most Expensive
A
MOH London
LG375933901 · Nov 1
€969 EUR
£852 GBP
View
4 more retailers have this diamond
Prices start from €336 EURSave up to €633 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
1.18ct Round
€336 EUR