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Radiant|Lab Grown|IGI

3.17ct I VS1 Radiant Lab Grown Diamond

EX • I/VS1 • IGI LG476178018

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG476178018

Diamond specifications and retailer prices

From £2,353 GBP
As of November 4, 2026
Save £4,548 GBP (66%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £6,901 GBP at MOH London · As of November 5, 2026
View at MOH London

About this 3.17ct lab-grown radiant diamond

This 3.17ct lab-grown radiant sits in the three to five carat band, graded I colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG476178018 or 476178018. Listed at 10 retailers as of November 4, 2026, with prices from £2,353 to £6,901, a £4,548 spread on the same certified stone. MOH London lists it at £6,901. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

3.17
Carat
I
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39.6°
Pavilion angle36.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG476178018
Dimensions9.37 × 7.79 × 5.22 mm
L/W Ratio1.20
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
9.37 mm7.79 mm3.17 ctI / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG476178018
Side View
Table 66.0%Crown 39.6°Girdle: THN-MEDPavilion 36.2°Culet: NoneDepth 67.0%

Caratlytics Score

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B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: £6,901 GBP|Low: £2,259 GBP|High: £7,012 GBP|Avg: £3,746 GBP|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 5, 2026
Retailer 5£2,353 GBP
Retailer 12£2,465 GBP
Retailer 9£2,561 GBP
Retailer 6£2,730 GBP
Retailer 11£2,733 GBP
Retailer 4£2,848 GBP
Retailer 8£3,411 GBP
Retailer 3£3,517 GBP
Retailer 7£4,240 GBP
Retailer 10£4,719 GBP
Retailer 2£6,357 GBP
MOH London£6,901 GBP

20 data points across 12 retailers

10 retailers£2,353 GBP to £6,901 GBP

B
Cheapest Retailer
-
£2,353 GBP
B
Retailer 2
-
£2,465 GBP
View
B
Retailer 3
-
£2,561 GBP
View
B
Retailer 4
-
£2,730 GBP
View
B
Retailer 5
-
£2,733 GBP
View
B
Retailer 6
-
£3,411 GBP
View
B
Retailer 7
-
£4,240 GBP
View
B
Retailer 8
-
£4,719 GBP
View
B
Retailer 9
-
£6,357 GBP
View
Most Expensive
B
MOH London
LG476178018 · Nov 5
£6,901 GBP
View
9 more retailers have this diamond
Prices start from £2,353 GBPSave up to £4,548 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.

B
3.17ct Radiant
£2,353 GBP