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Radiant|Lab Grown|IGI

3.11ct E VVS1 Radiant Lab Grown Diamond

EX • E/VVS1 • IGI LG821651359

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

Certificate IGI LG821651359

Diamond specifications and retailer prices

From £687 GBP
$915 USD
As of October 29, 2026
Save £3,766 GBP (85%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: £4,453 GBP at Frank Darling · As of October 29, 2026
View at Frank Darling

About this 3.11ct lab-grown radiant diamond

This 3.11ct lab-grown radiant sits in the three to five carat band, graded E colour (colourless) and VVS1 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG821651359 or 821651359. Listed at 7 retailers as of October 29, 2026, with prices from £687 to £4,453, a £3,766 spread on the same certified stone. Frank Darling lists it at £4,453. 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
E
Colour
VVS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39.7°
Pavilion angle34.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG821651359
Dimensions10.93 × 6.93 × 4.55 mm
L/W Ratio1.58
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
10.93 mm6.93 mm3.11 ctE / VVS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG821651359
Side View
Table 66.0%Crown 39.7°Girdle: Slightly ThickPavilion 34.5°Culet: NoneDepth 65.7%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: £4,453 GBP|Low: £348 GBP|High: £4,453 GBP|Avg: £1,480 GBP
Frank Darling
Retailer 2
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October 29, 2026
Retailer 6£484 GBP
Retailer 2£687 GBP
Retailer 15£781 GBP
Retailer 12£785 GBP
Retailer 4£830 GBP
Retailer 9£1,145 GBP
Retailer 16£1,404 GBP
Retailer 13£1,480 GBP
Retailer 10£1,568 GBP
Retailer 3£1,732 GBP
Retailer 8£1,741 GBP
Retailer 7£1,918 GBP
Retailer 17£2,114 GBP
Retailer 18£2,158 GBP
Retailer 5£2,334 GBP
Retailer 14£2,733 GBP
Retailer 11£4,250 GBP
Frank Darling£4,453 GBP

22 data points across 18 retailers

7 retailers£687 GBP to £4,453 GBP

A
Cheapest Retailer
-
£687 GBP
$915 USD
A
Retailer 2
-
£785 GBP
$1,046 USD
View
B+
Retailer 3
-
£1,480 GBP
$1,971 USD
View
Retailer 4
-
£2,158 GBP
A$4,422 AUD
View
Price last confirmed 31 days ago
Retailer 5
-
£2,733 GBP
$3,640 USD
View
Price last confirmed 25 days ago
B
Retailer 6
-
£4,250 GBP
$5,660 USD
View
Most Expensive
B
Frank Darling
934535BD · Oct 29
£4,453 GBP
$5,929 USD
View
6 more retailers have this diamond
Prices start from £687 GBPSave up to £3,766 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
3.11ct Radiant
£687 GBP