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Radiant|Lab Grown|IGI

3.11ct H VS1 Radiant Lab Grown Diamond

EX • H/VS1 • IGI LG476178019

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

Certificate IGI LG476178019

Diamond specifications and retailer prices

From £2,724 GBP
$3,650 USD
As of October 30, 2026
Save £4,613 GBP (63%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £7,337 GBP at Cape Diamonds · As of October 29, 2026
View at Cape Diamonds

About this 3.11ct lab-grown radiant diamond

This 3.11ct lab-grown radiant sits in the three to five carat band, graded H colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG476178019 or 476178019. Listed at 11 retailers as of October 29, 2026, with prices from £2,724 to £7,337, a £4,613 spread on the same certified stone. Cape Diamonds lists it at £7,337. 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

3.11
Carat
H
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.6°
Pavilion angle35.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG476178019
Dimensions9.87 × 7.65 × 5.00 mm
L/W Ratio1.29
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
9.87 mm7.65 mm3.11 ctH / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG476178019
Side View
Table 62.5%Crown 36.6°Girdle: MediumPavilion 35.4°Culet: NoneDepth 65.4%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: £7,337 GBP|Low: £2,615 GBP|High: £7,933 GBP|Avg: £4,239 GBP|-7.5%
Cape Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 29, 2026
Retailer 5£2,724 GBP
Retailer 12£2,876 GBP
Retailer 9£2,964 GBP
Retailer 6£3,160 GBP
Retailer 11£3,194 GBP
Retailer 4£3,276 GBP
Retailer 8£3,949 GBP
Retailer 3£4,072 GBP
Retailer 10£4,845 GBP
Retailer 7£4,899 GBP
Retailer 2£6,805 GBP
Cape Diamonds£7,337 GBP

18 data points across 12 retailers

11 retailers£2,724 GBP to £7,337 GBP

B+
Cheapest Retailer
-
£2,724 GBP
$3,650 USD
B
Retailer 2
-
£2,876 GBP
$3,854 USD
View
B
Retailer 3
-
£2,964 GBP
$3,971 USD
View
B
Retailer 4
-
£3,160 GBP
$4,234 USD
View
B
Retailer 5
-
£3,194 GBP
CA$5,943 CAD
View
B
Retailer 6
-
£3,949 GBP
$5,291 USD
View
B
Retailer 7
-
£4,845 GBP
View
B
Retailer 8
-
£4,899 GBP
$6,564 USD
View
B
Retailer 9
-
£6,805 GBP
View
B
Retailer 10
-
£7,137 GBP
View
Most Expensive
B
Cape Diamonds
cert_476178019 · Oct 29
£7,337 GBP
ZAR 158,811 ZAR
View
10 more retailers have this diamond
Prices start from £2,724 GBPSave up to £4,613 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+
3.11ct Radiant
£2,724 GBP