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Round|Lab Grown|IGI

3.00ct I SI1 Round Lab Grown Diamond

ID • I/SI1 • IGI LG490193308

Shape and cutting style on the report: Round brilliant

Certificate IGI LG490193308

Diamond specifications and retailer prices

From £1,248 GBP
As of November 5, 2026
Save £9,536 GBP (88%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £10,784 GBP at MOH London · As of November 5, 2026
View at MOH London

About this 3ct lab-grown round diamond

This 3ct lab-grown round sits in the three to five carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG490193308 or 490193308. Listed at 11 retailers as of November 5, 2026, with prices from £1,248 to £10,784, a £9,536 spread on the same certified stone. MOH London lists it at £10,784. 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

3.00
Carat
I
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.3°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG490193308
Dimensions9.26 × 9.20 × 5.66 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
9.26 mm9.20 mm3.00 ctI / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG490193308
Side View
Table 59.0%Crown 35.3°Girdle: MediumPavilion 40.7°Culet: NoneDepth 61.3%

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 5
Current: £10,784 GBP|Low: £1,248 GBP|High: £10,944 GBP|Avg: £6,020 GBP|-1.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 5, 2026
Retailer 2£1,248 GBP
Retailer 4£4,581 GBP
Retailer 7£5,130 GBP
Retailer 8£5,305 GBP
Retailer 5£5,315 GBP
Retailer 9£5,646 GBP
Retailer 3£6,319 GBP
Retailer 6£8,200 GBP
MOH London£10,784 GBP

13 data points across 9 retailers

11 retailers£1,248 GBP to £10,784 GBP

A
Cheapest Retailer
-
£1,248 GBP
B
Retailer 2
-
£4,581 GBP
View
B
Retailer 3
-
£4,801 GBP
View
B
Retailer 4
-
£5,130 GBP
View
Final sale: no returns
B
Retailer 5
-
£5,305 GBP
View
Retailer 6
-
£5,315 GBP
View
Price last confirmed 25 days ago
B
Retailer 7
-
£5,315 GBP
View
B
Retailer 8
-
£6,309 GBP
View
B
Retailer 9
-
£6,319 GBP
View
B
Retailer 10
-
£8,200 GBP
View
Most Expensive
B
MOH London
LG490193308 · Nov 5
£10,784 GBP
View
10 more retailers have this diamond
Prices start from £1,248 GBPSave up to £9,536 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
3.00ct Round
£1,248 GBP