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Round|Lab Grown|IGI

1.09ct E SI1 Round Lab Grown Diamond

ID • E/SI1 • IGI LG675550843

Shape and cutting style on the report: Round brilliant

Certificate IGI LG675550843

Diamond specifications and retailer prices

From €135 EUR
$151 USD
As of October 29, 2026
Save €794 EUR (85%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: €929 EUR at Reve Diamonds · As of October 30, 2026
View at Reve Diamonds

About this 1.09ct lab-grown round diamond

This 1.09ct 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 LG675550843 or 675550843. Listed at 15 retailers as of October 29, 2026, with prices from €135 to €929, a €794 spread on the same certified stone. Reve Diamonds lists it at €929. 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

1.09
Carat
E
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.4°
Pavilion angle41.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG675550843
Dimensions6.65 × 6.63 × 4.05 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.65 mm6.63 mm1.09 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG675550843
Side View
Table 59.0%Crown 33.4°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 61.0%

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: Oct 29
Current: €291 EUR|Low: €135 EUR|High: €929 EUR|Avg: €364 EUR|-6.1%
Retailer 1
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
Reve Diamonds
October 31, 2026
Retailer 4€135 EUR
Retailer 2€150 EUR
Retailer 3€157 EUR
Retailer 14€167 EUR
Retailer 6€186 EUR
Retailer 12€277 EUR
Retailer 1€291 EUR
Retailer 10€308 EUR
Retailer 7€328 EUR
Retailer 9€456 EUR
Retailer 13€539 EUR
Retailer 11€569 EUR
Retailer 5€589 EUR
Retailer 8€789 EUR
Reve Diamonds€929 EUR

43 data points across 15 retailers

15 retailers€135 EUR to €929 EUR

A
Cheapest Retailer
-
€135 EUR
$151 USD
A
Retailer 2
-
€150 EUR
$168 USD
View
Final sale: no returns
A
Retailer 3
-
€157 EUR
$175 USD
View
A
Retailer 4
-
€167 EUR
$187 USD
View
A
Retailer 5
-
€186 EUR
$208 USD
View
A
Retailer 6
-
€277 EUR
$310 USD
View
A
Retailer 7
-
€291 EUR
£256 GBP
View
A
Retailer 8
-
€308 EUR
$344 USD
View
A
Retailer 9
-
€328 EUR
£288 GBP
View
B+
Retailer 10
-
€456 EUR
$509 USD
View
B
Retailer 11
-
€539 EUR
$602 USD
View
B
Retailer 12
-
€569 EUR
$636 USD
View
B
Retailer 13
-
€589 EUR
$658 USD
View
B
Retailer 14
-
€789 EUR
£694 GBP
View
Most Expensive
B
Reve Diamonds
5A1831A79 · Oct 30
€929 EUR
$1,038 USD
View
14 more retailers have this diamond
Prices start from €135 EURSave up to €794 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
1.09ct Round
€135 EUR