Heart|Lab Grown|IGI

6.78ct D VVS1 Heart Lab Grown Diamond

ID • D/VVS1 • IGI LG838658328

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG838658328

Diamond specifications and retailer prices

From £2,230 GBP

$2,970 USD

As of October 27, 2026

Save £6,889 GBP (76%) vs most expensive(unlock to see where)

21 retailers carry this diamond

Most expensive: £15,952 GBP at Novita Diamonds · As of October 8, 2026

View at Novita Diamonds

About this 6.78ct lab-grown heart diamond

This 6.78ct lab-grown heart sits in the over five carat band, graded D colour (colourless) and VVS1 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG838658328 or 838658328. Listed at 21 retailers as of October 27, 2026, with a 309% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

6.78

Carat

Colour

VVS1

Clarity

Ideal

Cut

Specifications

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle41.3°

Pavilion angle38.7°

OriginLab Grown

Grading LabIGI

CertificateIGI LG838658328

Dimensions11.40 × 13.40 × 7.63 mm

L/W Ratio1.18

Girdle conditionFaceted

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

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

CertificateIGI LG838658328

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: £2,640 GBP|Low: £2,230 GBP|High: £12,881 GBP|Avg: £4,868 GBP|-2.9%

Retailer 1

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

October 30, 2026

Retailer 10£2,230 GBP

Retailer 15£2,426 GBP

Retailer 5£2,498 GBP

Retailer 8£2,587 GBP

Retailer 1£2,640 GBP

Retailer 2£2,707 GBP

Retailer 17£2,740 GBP

Retailer 7£3,233 GBP

Retailer 11£3,496 GBP

Retailer 14£3,696 GBP

Retailer 18£3,717 GBP

Retailer 4£4,801 GBP

Retailer 12£5,006 GBP

Retailer 13£6,592 GBP

Retailer 6£9,006 GBP

Retailer 3£9,082 GBP

Retailer 9£9,119 GBP

Retailer 16£12,682 GBP

19 data points across 18 retailers

21 retailers£2,230 GBP to £9,119 GBP

Cheapest Retailer

£2,230 GBP

$2,970 USD

Retailer 2

£2,426 GBP

$3,231 USD

View

Retailer 3

£2,498 GBP

$3,326 USD

View

Final sale: no returns

B+

Retailer 4

£2,587 GBP

$3,445 USD

View

B+

Retailer 5

£2,640 GBP

View

Retailer 6

£2,640 GBP

$3,516 USD

View

Price last confirmed 17 days ago

B+

Retailer 7

£2,707 GBP

$3,605 USD

View

B+

Retailer 8

£2,740 GBP

$3,649 USD

View

B+

Retailer 9

£3,233 GBP

$4,305 USD

View

B+

Retailer 10

£3,496 GBP

View

B+

Retailer 11

£3,696 GBP

$4,922 USD

View

B+

Retailer 12

£3,717 GBP

$4,950 USD

View

Retailer 13

£4,801 GBP

A$9,836 AUD

View

Price last confirmed 7 days ago

B+

Retailer 14

£5,006 GBP

ZAR 107,702 ZAR

View

Retailer 15

£6,592 GBP

View

Retailer 16

£6,666 GBP

$8,877 USD

View

Retailer 17

£9,006 GBP

$11,993 USD

View

Retailer 18

£9,082 GBP

$12,094 USD

View

Retailer 19

£9,119 GBP

SGD 16,411 SGD

View

Retailer 20

£12,682 GBP

$16,888 USD

View

Price under review

Most Expensive

Novita Diamonds

cert_838658328 · Oct 8

£15,952 GBP

A$32,681 AUD

View

Price under review

20 more retailers have this diamond

Prices start from £2,230 GBPSave up to £6,889 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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