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Round|Lab Grown|IGI

3.16ct J SI1 Round Lab Grown Diamond

EX • J/SI1 • IGI LG478113412

Shape and cutting style on the report: Round brilliant

Certificate IGI LG478113412

Diamond specifications and retailer prices

From £1,308 GBP
As of November 5, 2026
Save £8,465 GBP (87%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £9,773 GBP at MOH London · As of November 5, 2026
View at MOH London

About this 3.16ct lab-grown round diamond

This 3.16ct lab-grown round sits in the three to five carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG478113412 or 478113412. Listed at 11 retailers as of November 5, 2026, with prices from £1,308 to £9,773, a £8,465 spread on the same certified stone. MOH London lists it at £9,773. 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

3.16
Carat
J
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG478113412
Dimensions9.40 × 9.37 × 5.71 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
9.40 mm9.37 mm3.16 ctJ / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG478113412
Side View
Table 60.5%Crown 36°Girdle: MED-STKPavilion 40.3°Culet: NoneDepth 60.8%

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: £9,773 GBP|Low: £1,308 GBP|High: £9,930 GBP|Avg: £5,666 GBP|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 5, 2026
Retailer 2£1,308 GBP
Retailer 4£4,151 GBP
Retailer 6£4,649 GBP
Retailer 7£4,818 GBP
Retailer 8£5,145 GBP
Retailer 3£5,931 GBP
Retailer 9£6,204 GBP
Retailer 5£7,436 GBP
MOH London£9,773 GBP

16 data points across 9 retailers

11 retailers£1,308 GBP to £9,773 GBP

A
Cheapest Retailer
-
£1,308 GBP
B+
Retailer 2
-
£4,151 GBP
View
B+
Retailer 3
-
£4,351 GBP
View
B+
Retailer 4
-
£4,649 GBP
View
Final sale: no returns
Retailer 5
-
£4,815 GBP
View
Price last confirmed 25 days ago
B+
Retailer 6
-
£4,815 GBP
View
B+
Retailer 7
-
£4,818 GBP
View
B
Retailer 8
-
£5,717 GBP
View
B
Retailer 9
-
£5,931 GBP
View
B
Retailer 10
-
£7,436 GBP
View
Most Expensive
B
MOH London
LG478113412 · Nov 5
£9,773 GBP
View
10 more retailers have this diamond
Prices start from £1,308 GBPSave up to £8,465 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
3.16ct Round
£1,308 GBP