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Round|Lab Grown|IGI

1.06ct H SI1 Round Lab Grown Diamond

ID • H/SI1 • IGI LG492122402

Shape and cutting style on the report: Round brilliant

Certificate IGI LG492122402

Diamond specifications and retailer prices

From £455 GBP
$610 USD
As of October 30, 2026
Save £2,053 GBP (82%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £2,508 GBP at MOH London · As of October 29, 2026
View at MOH London

About this 1.06ct lab-grown round diamond

This 1.06ct lab-grown round sits in the classic one-carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG492122402 or 492122402. Listed at 11 retailers as of October 29, 2026, with prices from £455 to £2,508, a £2,053 spread on the same certified stone. MOH London lists it at £2,508. 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

1.06
Carat
H
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.5°
Pavilion angle41.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG492122402
Dimensions6.54 × 6.50 × 4.07 mm
L/W Ratio1.01
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 mm6.50 mm1.06 ctH / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG492122402
Side View
Table 55.0%Crown 33.5°Girdle: MediumPavilion 41.2°Culet: NoneDepth 62.5%

Caratlytics Score

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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: £2,508 GBP|Low: £408 GBP|High: £2,528 GBP|Avg: £931 GBP|+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£455 GBP
Retailer 5£510 GBP
Retailer 9£572 GBP
Retailer 6£592 GBP
Retailer 8£592 GBP
Retailer 3£606 GBP
Retailer 10£724 GBP
Retailer 11£942 GBP
Retailer 7£964 GBP
Retailer 4£1,513 GBP
MOH London£2,508 GBP

19 data points across 11 retailers

11 retailers£455 GBP to £2,508 GBP

A
Cheapest Retailer
-
£455 GBP
$610 USD
A
Retailer 2
-
£510 GBP
$684 USD
View
A
Retailer 3
-
£555 GBP
$744 USD
View
A
Retailer 4
-
£572 GBP
$766 USD
View
Final sale: no returns
Retailer 5
-
£592 GBP
$793 USD
View
Price last confirmed 14 days ago
A
Retailer 6
-
£592 GBP
$793 USD
View
A
Retailer 7
-
£724 GBP
$970 USD
View
B+
Retailer 8
-
£964 GBP
$1,291 USD
View
B
Retailer 9
-
£1,513 GBP
$2,027 USD
View
B
Retailer 10
-
£1,665 GBP
$2,231 USD
View
Most Expensive
B
MOH London
LG492122402 · Oct 29
£2,508 GBP
View
10 more retailers have this diamond
Prices start from £455 GBPSave up to £2,053 GBP

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
1.06ct Round
£455 GBP