Round|Lab Grown|IGI

12.31ct E VVS2 Round Lab Grown Diamond

ID • E/VVS2 • IGI LG666406796

Shape and cutting style on the report: Round brilliant

Certificate IGI LG666406796

Diamond specifications and retailer prices

From £5,851 GBP

As of November 1, 2026

Save £19,765 GBP (77%) vs most expensive(unlock to see where)

22 retailers carry this diamond

Most expensive: £25,615 GBP at Michael Trio · As of October 31, 2026

View at Michael Trio

About this 12.31ct lab-grown round diamond

This 12.31ct lab-grown round sits in the over five carat band, graded E colour (colourless) and VVS2 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG666406796 or 666406796. Listed at 22 retailers as of October 31, 2026, with prices from £5,851 to £25,615, a £19,765 spread on the same certified stone. Michael Trio lists it at £25,615. 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

12.31

Carat

Colour

VVS2

Clarity

Ideal

Cut

Specifications

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle33.7°

Pavilion angle40.8°

OriginLab Grown

Grading LabIGI

CertificateIGI LG666406796

Dimensions14.96 × 15.00 × 9.01 mm

L/W Ratio1.00

Girdle conditionFaceted

Culet sizePointed

Cert comments

HEARTS & ARROWS 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

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

CertificateIGI LG666406796

Side View

Caratlytics Score

How it works →

B+

Very Good

Strong quality and value balance

Unlock full score analysis

See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1

Current: £25,615 GBP|Low: £3,992 GBP|High: £25,615 GBP|Avg: £9,537 GBP

Michael Trio

Retailer 2

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November 1, 2026

Retailer 2£5,851 GBP

Retailer 19£6,280 GBP

Retailer 12£6,531 GBP

Retailer 20£6,662 GBP

Retailer 11£7,033 GBP

Retailer 5£7,285 GBP

Retailer 16£7,288 GBP

Retailer 9£7,518 GBP

Retailer 21£8,103 GBP

Retailer 8£8,192 GBP

Retailer 18£8,430 GBP

Retailer 15£8,747 GBP

Retailer 3£8,897 GBP

Retailer 14£9,507 GBP

Retailer 17£11,277 GBP

Retailer 13£11,937 GBP

Retailer 6£13,325 GBP

Retailer 7£20,287 GBP

Retailer 10£23,251 GBP

Retailer 4£25,278 GBP

Michael Trio£25,615 GBP

34 data points across 21 retailers

22 retailers£5,851 GBP to £25,615 GBP

Retailer 1

£4,973 GBP

$6,663 USD

Price last confirmed 19 days ago

B+

Retailer 2

£5,851 GBP

View

B+

Retailer 3

£6,280 GBP

$8,414 USD

View

B+

Retailer 4

£6,531 GBP

$8,751 USD

View

B+

Retailer 5

£6,662 GBP

$8,927 USD

View

B+

Retailer 6

£7,033 GBP

$9,423 USD

View

Final sale: no returns

B+

Retailer 7

£7,285 GBP

$9,761 USD

View

B+

Retailer 8

£7,288 GBP

$9,765 USD

View

B+

Retailer 9

£7,518 GBP

HK$78,700 HKD

View

B+

Retailer 10

£8,103 GBP

$10,857 USD

View

B+

Retailer 11

£8,192 GBP

$10,977 USD

View

B+

Retailer 12

£8,430 GBP

$11,295 USD

View

Retailer 13

£8,747 GBP

View

B+

Retailer 14

£8,897 GBP

$11,921 USD

View

Retailer 15

£9,507 GBP

A$19,598 AUD

View

Price last confirmed 9 days ago

Retailer 16

£11,277 GBP

ZAR 244,097 ZAR

View

Retailer 17

£11,937 GBP

A$24,607 AUD

View

Retailer 18

£13,325 GBP

$17,854 USD

View

Retailer 19

£20,287 GBP

$27,183 USD

View

Retailer 20

£23,251 GBP

$31,154 USD

View

Retailer 21

£25,278 GBP

$33,870 USD

View

Most Expensive

Michael Trio

9502612660 · Oct 31

£25,615 GBP

SGD 46,381 SGD

View

21 more retailers have this diamond

Prices start from £5,851 GBPSave up to £19,765 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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12.31ct Round

£5,851 GBP