Radiant|Lab Grown|IGI

3.15ct E VVS1 Radiant Lab Grown Diamond

EX • E/VVS1 • IGI LG821651330

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

Certificate IGI LG821651330

Diamond specifications and retailer prices

From £478 GBP

$636 USD

As of October 29, 2026

Save £2,267 GBP (83%) vs most expensive(unlock to see where)

17 retailers carry this diamond

Most expensive: £2,745 GBP at Rare Carat · As of October 28, 2026

View at Rare Carat

About this 3.15ct lab-grown radiant diamond

This 3.15ct 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 LG821651330 or 821651330. Listed at 17 retailers as of October 28, 2026, with prices from £478 to £2,745, a £2,267 spread on the same certified stone. Rare Carat lists it at £2,745. 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

3.15

Carat

Colour

VVS1

Clarity

Excellent

Cut

Specifications

CutExcellent

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle41.6°

Pavilion angle35.6°

OriginLab Grown

Grading LabIGI

CertificateIGI LG821651330

Dimensions9.86 × 7.11 × 4.86 mm

L/W Ratio1.39

Cert comments

This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa

View IGI Report →View Loupe360 Video →

Top View

OriginLab Grown

CutExcellent

PolishExcellent

SymmetryExcellent

FluorescenceNone

CertificateIGI LG821651330

Side View

Caratlytics Score

How it works →

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: £2,745 GBP|Low: £478 GBP|High: £2,745 GBP|Avg: £1,372 GBP|+1.5%

Rare Carat

Retailer 2

Retailer 3

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Retailer 8

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Retailer 11

Retailer 12

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Retailer 16

October 30, 2026

Retailer 14£478 GBP

Retailer 10£627 GBP

Retailer 3£712 GBP

Retailer 9£820 GBP

Retailer 5£904 GBP

Retailer 7£1,137 GBP

Retailer 4£1,142 GBP

Retailer 6£1,317 GBP

Retailer 11£1,421 GBP

Retailer 12£1,534 GBP

Retailer 13£1,713 GBP

Retailer 8£1,737 GBP

Retailer 2£1,745 GBP

Retailer 15£2,109 GBP

Retailer 16£2,308 GBP

Rare Carat£2,745 GBP

22 data points across 16 retailers

17 retailers£478 GBP to £2,745 GBP

Cheapest Retailer

£478 GBP

$636 USD

Final sale: no returns

Retailer 2

£627 GBP

$835 USD

View

Retailer 3

£712 GBP

$948 USD

View

Retailer 4

£820 GBP

View

Retailer 5

£904 GBP

€1,146 EUR

View

Retailer 6

£1,137 GBP

A$2,330 AUD

View

Price last confirmed 9 days ago

Retailer 7

£1,142 GBP

ZAR 24,571 ZAR

View

Retailer 8

£1,317 GBP

$1,754 USD

View

Retailer 9

£1,421 GBP

$1,892 USD

View

B+

Retailer 10

£1,534 GBP

View

B+

Retailer 11

£1,713 GBP

$2,281 USD

View

B+

Retailer 12

£1,737 GBP

$2,313 USD

View

B+

Retailer 13

£1,745 GBP

$2,324 USD

View

B+

Retailer 14

£2,109 GBP

SGD 3,796 SGD

View

Retailer 15

£2,212 GBP

A$4,532 AUD

View

Price last confirmed 22 days ago

B+

Retailer 16

£2,308 GBP

View

Most Expensive

Rare Carat

CN215-15A · Oct 28

£2,745 GBP

$3,655 USD

View

16 more retailers have this diamond

Prices start from £478 GBPSave up to £2,267 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.

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3.15ct Radiant

£478 GBP