Radiant|Lab Grown|IGI

3.12ct D VS2 Radiant Lab Grown Diamond

EX • D/VS2 • IGI LG821637509

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

Certificate IGI LG821637509

Diamond specifications and retailer prices

From £323 GBP

$433 USD

As of October 27, 2026

Save £1,177 GBP (78%) vs most expensive(unlock to see where)

17 retailers carry this diamond

Most expensive: £1,500 GBP at Brilliance · As of October 27, 2026

View at Brilliance

About this 3.12ct lab-grown radiant diamond

This 3.12ct lab-grown radiant sits in the three to five carat band, graded D colour (colourless) and VS2 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG821637509 or 821637509. Listed at 17 retailers as of October 27, 2026, with prices from £323 to £1,500, a £1,177 spread on the same certified stone. Brilliance lists it at £1,500. 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

3.12

Carat

Colour

VS2

Clarity

Excellent

Cut

Specifications

CutExcellent

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle44.9°

Pavilion angle30.5°

OriginLab Grown

Grading LabIGI

CertificateIGI LG821637509

Dimensions10.47 × 7.10 × 4.46 mm

L/W Ratio1.47

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 LG821637509

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 27

Current: £1,500 GBP|Low: £401 GBP|High: £1,522 GBP|Avg: £950 GBP

Brilliance

Retailer 2

Retailer 3

Retailer 4

Retailer 5

Retailer 6

Retailer 7

Retailer 8

Retailer 9

Retailer 10

Retailer 11

Retailer 12

Retailer 13

Retailer 14

October 29, 2026

Retailer 13£401 GBP

Retailer 9£508 GBP

Retailer 8£527 GBP

Retailer 12£537 GBP

Retailer 2£659 GBP

Retailer 10£669 GBP

Retailer 3£975 GBP

Retailer 11£1,124 GBP

Retailer 5£1,172 GBP

Retailer 4£1,271 GBP

Retailer 14£1,288 GBP

Retailer 6£1,312 GBP

Retailer 7£1,480 GBP

Brilliance£1,500 GBP

43 data points across 14 retailers

17 retailers£323 GBP to £1,500 GBP

Cheapest Retailer

£323 GBP

$433 USD

Retailer 2

£362 GBP

$485 USD

View

Retailer 3

£401 GBP

$537 USD

View

Retailer 4

£401 GBP

$537 USD

View

Retailer 5

£508 GBP

$680 USD

View

Retailer 6

£527 GBP

View

B+

Retailer 7

£537 GBP

$720 USD

View

Retailer 8

£659 GBP

View

Retailer 9

£669 GBP

€854 EUR

View

Price last confirmed 7 days ago

Retailer 10

£975 GBP

$1,307 USD

View

B+

Retailer 11

£1,124 GBP

$1,506 USD

View

B+

Retailer 12

£1,172 GBP

View

B+

Retailer 13

£1,271 GBP

SGD 2,302 SGD

View

B+

Retailer 14

£1,288 GBP

$1,726 USD

View

Retailer 15

£1,312 GBP

$1,758 USD

View

Price last confirmed 12 days ago

B+

Retailer 16

£1,480 GBP

View

Most Expensive

Brilliance

D44182452 · Oct 27

£1,500 GBP

$2,010 USD

View

16 more retailers have this diamond

Prices start from £323 GBPSave up to £1,177 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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3.12ct Radiant

£323 GBP