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Round|Lab Grown|IGI

1.05ct I SI2 Round Lab Grown Diamond

EX • I/SI2 • IGI LG451055603

Shape and cutting style on the report: Round brilliant

Certificate IGI LG451055603

Diamond specifications and retailer prices

From €546 EUR
$610 USD
As of October 30, 2026
Save €3,033 EUR (85%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: €3,579 EUR at MOH London · As of October 29, 2026
View at MOH London

About this 1.05ct lab-grown round diamond

This 1.05ct lab-grown round sits in the classic one-carat band, graded I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG451055603 or 451055603. Listed at 11 retailers as of October 29, 2026, with prices from €546 to €3,579, a €3,033 spread on the same certified stone. MOH London lists it at €3,579. 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

1.05
Carat
I
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.9°
Pavilion angle41.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG451055603
Dimensions6.44 × 6.47 × 4.09 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
6.44 mm6.47 mm1.05 ctI / SI2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG451055603
Side View
Table 57.5%Crown 34.9°Girdle: MED-STKPavilion 41.6°Culet: NoneDepth 63.4%

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: €3,579 EUR|Low: €546 EUR|High: €3,602 EUR|Avg: €1,656 EUR|+0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 30, 2026
Retailer 2€546 EUR
Retailer 5€905 EUR
Retailer 9€1,012 EUR
Retailer 6€1,049 EUR
Retailer 8€1,049 EUR
Retailer 10€1,509 EUR
Retailer 7€1,677 EUR
Retailer 4€1,802 EUR
Retailer 11€2,193 EUR
Retailer 3€2,349 EUR
MOH London€3,579 EUR

20 data points across 11 retailers

11 retailers€546 EUR to €3,579 EUR

A
Cheapest Retailer
-
€546 EUR
$610 USD
B+
Retailer 2
-
€905 EUR
$1,011 USD
View
B+
Retailer 3
-
€985 EUR
$1,100 USD
View
B+
Retailer 4
-
€1,012 EUR
$1,131 USD
View
Final sale: no returns
Retailer 5
-
€1,049 EUR
$1,172 USD
View
Price last confirmed 19 days ago
B+
Retailer 6
-
€1,049 EUR
$1,172 USD
View
B
Retailer 7
-
€1,677 EUR
$1,873 USD
View
B
Retailer 8
-
€1,802 EUR
View
B
Retailer 9
-
€1,967 EUR
$2,198 USD
View
B
Retailer 10
-
€2,193 EUR
$2,450 USD
View
Most Expensive
B
MOH London
LG451055603 · Oct 29
€3,579 EUR
£3,148 GBP
View
10 more retailers have this diamond
Prices start from €546 EURSave up to €3,033 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
1.05ct Round
€546 EUR