Cushion|Lab Grown|IGI

3.09ct D VVS1 Cushion Lab Grown Diamond

ID • D/VVS1 • IGI LG677521457

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG677521457

Diamond specifications and retailer prices

From £783 GBP

$1,051 USD

As of November 1, 2026

Save £6,058 GBP (89%) vs most expensive(unlock to see where)

19 retailers carry this diamond

Most expensive: £6,841 GBP at Brilliant Earth · As of October 26, 2026

View at Brilliant Earth

About this 3.09ct lab-grown cushion diamond

This 3.09ct lab-grown cushion sits in the three to five carat band, graded D colour (colourless) and VVS1 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG677521457 or 677521457. Listed at 19 retailers as of October 26, 2026, with prices from £783 to £6,841, a £6,058 spread on the same certified stone. Brilliant Earth lists it at £6,841. 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

3.09

Carat

Colour

VVS1

Clarity

Ideal

Cut

Specifications

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle34.6°

Pavilion angle36.6°

OriginLab Grown

Grading LabIGI

CertificateIGI LG677521457

Dimensions9.92 × 7.79 × 5.17 mm

L/W Ratio1.27

Girdle conditionFaceted

Culet sizePointed

Cert comments

As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II

View IGI Report →View Loupe360 Video →

Top View

OriginLab Grown

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

CertificateIGI LG677521457

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: Nov 1

Current: £6,841 GBP|Low: £688 GBP|High: £6,841 GBP|Avg: £2,062 GBP

Brilliant Earth

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

Retailer 15

Retailer 16

Retailer 17

Retailer 18

Retailer 19

Retailer 20

November 2, 2026

Retailer 14£783 GBP

Retailer 18£864 GBP

Retailer 9£933 GBP

Retailer 11£1,011 GBP

Retailer 3£1,012 GBP

Retailer 5£1,189 GBP

Retailer 6£1,209 GBP

Retailer 13£1,212 GBP

Retailer 2£1,261 GBP

Retailer 17£1,777 GBP

Retailer 19£1,827 GBP

Retailer 4£2,026 GBP

Retailer 8£2,354 GBP

Retailer 15£2,669 GBP

Retailer 12£2,805 GBP

Retailer 10£2,939 GBP

Retailer 20£2,970 GBP

Retailer 16£3,000 GBP

Retailer 7£5,455 GBP

Brilliant Earth£6,841 GBP

32 data points across 20 retailers

19 retailers£783 GBP to £6,841 GBP

Cheapest Retailer

£783 GBP

$1,051 USD

Final sale: no returns

Retailer 2

£864 GBP

$1,160 USD

View

Retailer 3

£933 GBP

$1,252 USD

View

Retailer 4

£1,011 GBP

HK$10,600 HKD

View

Retailer 5

£1,189 GBP

$1,595 USD

View

Retailer 6

£1,209 GBP

$1,622 USD

View

Retailer 7

£1,212 GBP

View

Retailer 8

£1,261 GBP

€1,611 EUR

View

B+

Retailer 9

£1,777 GBP

A$3,669 AUD

View

B+

Retailer 10

£1,827 GBP

ZAR 39,614 ZAR

View

B+

Retailer 11

£2,026 GBP

$2,719 USD

View

B+

Retailer 12

£2,354 GBP

$3,159 USD

View

B+

Retailer 13

£2,669 GBP

View

Retailer 14

£2,805 GBP

$3,765 USD

View

Retailer 15

£2,939 GBP

SGD 5,329 SGD

View

Retailer 16

£2,970 GBP

$3,985 USD

View

Price last confirmed 12 days ago

B+

Retailer 17

£3,000 GBP

A$6,193 AUD

View

Retailer 18

£5,455 GBP

$7,320 USD

View

Most Expensive

Brilliant Earth

13509142Y · Oct 26

£6,841 GBP

$9,180 USD

View

18 more retailers have this diamond

Prices start from £783 GBPSave up to £6,058 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.

Where to buy this spec

See every retailer carrying 3.09ct D VVS1 cushion lab-grown

Ranked by inventory count, with return policy, certs, and trust signals.

Similar diamonds

3.09ct Cushion

£783 GBP