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Round|Lab Grown|IGI

1.05ct I SI1 Round Lab Grown Diamond

ID • I/SI1 • IGI LG492123220

Shape and cutting style on the report: Round brilliant

Certificate IGI LG492123220

Diamond specifications and retailer prices

From €546 EUR
$610 USD
As of October 30, 2026
Save €3,376 EUR (86%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: €3,922 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 SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG492123220 or 492123220. Listed at 13 retailers as of October 29, 2026, with prices from €546 to €3,922, a €3,376 spread on the same certified stone. MOH London lists it at €3,922. 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
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.9°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG492123220
Dimensions6.54 × 6.56 × 4.01 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
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
6.54 mm6.56 mm1.05 ctI / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG492123220
Side View
Table 57.0%Crown 32.9°Girdle: MediumPavilion 40.9°Culet: NoneDepth 61.2%

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: €3,922 EUR|Low: €546 EUR|High: €3,953 EUR|Avg: €1,683 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
Retailer 12
Retailer 13
Retailer 14
October 30, 2026
Retailer 2€546 EUR
Retailer 9€1,046 EUR
Retailer 3€1,139 EUR
Retailer 13€1,173 EUR
Retailer 10€1,214 EUR
Retailer 12€1,214 EUR
Retailer 4€1,369 EUR
Retailer 7€1,594 EUR
Retailer 5€1,708 EUR
Retailer 11€1,927 EUR
Retailer 8€2,079 EUR
Retailer 14€2,275 EUR
Retailer 6€2,393 EUR
MOH London€3,922 EUR

36 data points across 14 retailers

13 retailers€546 EUR to €3,922 EUR

A
Cheapest Retailer
-
€546 EUR
$610 USD
B+
Retailer 2
-
€1,046 EUR
$1,169 USD
View
B+
Retailer 3
-
€1,139 EUR
$1,272 USD
View
B+
Retailer 4
-
€1,173 EUR
$1,310 USD
View
Final sale: no returns
B+
Retailer 5
-
€1,214 EUR
$1,356 USD
View
Retailer 6
-
€1,214 EUR
$1,356 USD
View
Price last confirmed 19 days ago
B+
Retailer 7
-
€1,369 EUR
$1,530 USD
View
B+
Retailer 8
-
€1,594 EUR
£1,402 GBP
View
B
Retailer 9
-
€1,927 EUR
$2,153 USD
View
B
Retailer 10
-
€2,079 EUR
View
B
Retailer 11
-
€2,275 EUR
$2,542 USD
View
B
Retailer 12
-
€2,393 EUR
$2,673 USD
View
Most Expensive
B
MOH London
LG492123220 · Oct 29
€3,922 EUR
£3,450 GBP
View
12 more retailers have this diamond
Prices start from €546 EURSave up to €3,376 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