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Round|Lab Grown|IGI

3.15ct H SI1 Round Lab Grown Diamond

ID • H/SI1 • IGI LG642473486

Shape and cutting style on the report: Round brilliant

Certificate IGI LG642473486

Diamond specifications and retailer prices

From £287 GBP
As of November 5, 2026
Save £1,101 GBP (79%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £1,388 GBP at MOH London · As of November 3, 2026
View at MOH London

About this 3.15ct lab-grown round diamond

This 3.15ct lab-grown round sits in the three to five carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG642473486 or 642473486. Listed at 13 retailers as of November 3, 2026, with prices from £287 to £1,388, a £1,101 spread on the same certified stone. MOH London lists it at £1,388. 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

3.15
Carat
H
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.6°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG642473486
Dimensions9.49 × 9.46 × 5.74 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
9.49 mm9.46 mm3.15 ctH / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG642473486
Side View
Table 59.0%Crown 33.6°Girdle: MediumPavilion 40.9°Culet: NoneDepth 60.6%

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: Nov 5
Current: £1,388 GBP|Low: £229 GBP|High: £1,419 GBP|Avg: £695 GBP
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
November 3, 2026
Retailer 8£287 GBP
Retailer 11£321 GBP
Retailer 13£321 GBP
Retailer 4£355 GBP
Retailer 9£355 GBP
Retailer 2£464 GBP
Retailer 10£564 GBP
Retailer 12£641 GBP
Retailer 5£786 GBP
Retailer 7£996 GBP
Retailer 3£1,142 GBP
Retailer 6£1,319 GBP
MOH London£1,388 GBP

24 data points across 13 retailers

13 retailers£287 GBP to £1,388 GBP

A
Cheapest Retailer
-
£287 GBP
A
Retailer 2
-
£321 GBP
View
A
Retailer 3
-
£321 GBP
View
Final sale: no returns
A
Retailer 4
-
£355 GBP
View
Retailer 5
-
£355 GBP
View
Price last confirmed 12 days ago
A
Retailer 6
-
£464 GBP
View
B+
Retailer 7
-
£564 GBP
View
A
Retailer 8
-
£641 GBP
View
A
Retailer 9
-
£786 GBP
View
B+
Retailer 10
-
£996 GBP
View
B+
Retailer 11
-
£1,142 GBP
View
B+
Retailer 12
-
£1,319 GBP
View
Most Expensive
B+
MOH London
LG642473486 · Nov 3
£1,388 GBP
View
12 more retailers have this diamond
Prices start from £287 GBPSave up to £1,101 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
3.15ct Round
£287 GBP