Radiant|Lab Grown|IGI

6.78ct D VVS2 Radiant Lab Grown Diamond

ID • D/VVS2

Diamond specifications and retailer prices

From £1,950 GBP

$2,617 USD

As of November 2, 2026

Save £9,125 GBP (82%) vs most expensive(unlock to see where)

12 retailers carry this diamond

Most expensive: £11,075 GBP at With Clarity · As of November 3, 2026

View at With Clarity

About this 6.78ct lab-grown radiant diamond

This 6.78ct lab-grown radiant sits in the over five carat band, graded D colour (colourless) and VVS2 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI. Listed at 12 retailers as of November 2, 2026, with prices from £1,950 to £11,075, a £9,125 spread on the same certified stone. With Clarity lists it at £11,075. 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

VVS2

Clarity

Ideal

Cut

Specifications

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

OriginLab Grown

Grading LabIGI

Dimensions13.39 × 9.32 × 6.13 mm

L/W Ratio1.44

Top View

OriginLab Grown

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

CertificateIGI

Side View

Caratlytics Score

How it works →

Excellent

Excellent quality and great value

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

Price History

Last verified: Nov 2

Current: £1,950 GBP|Low: £1,950 GBP|High: £12,038 GBP|Avg: £5,195 GBP|-2.9%

Retailer 1

Retailer 2

Retailer 3

Retailer 4

Retailer 5

Retailer 6

Retailer 7

Retailer 8

With Clarity

November 3, 2026

Retailer 1£1,950 GBP

Retailer 6£2,147 GBP

Retailer 3£2,275 GBP

Retailer 5£2,458 GBP

Retailer 4£3,128 GBP

Retailer 7£3,493 GBP

Retailer 2£7,585 GBP

Retailer 8£8,141 GBP

With Clarity£11,075 GBP

25 data points across 9 retailers

12 retailers£1,950 GBP to £11,075 GBP

Cheapest Retailer

£1,950 GBP

$2,617 USD

Retailer 2

£1,996 GBP

$2,678 USD

View

Price last confirmed 10 days ago

Retailer 3

£2,147 GBP

$2,881 USD

View

Retailer 4

£2,159 GBP

$2,897 USD

View

Price last confirmed 9 days ago

Retailer 5

£2,275 GBP

$3,053 USD

View

Retailer 6

£2,302 GBP

$3,089 USD

View

Price last confirmed 8 days ago

Retailer 7

£2,458 GBP

$3,299 USD

View

B+

Retailer 8

£3,128 GBP

$4,197 USD

View

Retailer 9

£3,164 GBP

$4,246 USD

View

Price last confirmed 8 days ago

Retailer 10

£7,585 GBP

SGD 13,755 SGD

View

Retailer 11

£8,141 GBP

$10,925 USD

View

Price last confirmed 21 days ago

Most Expensive

With Clarity

842631327 · Nov 3

£11,075 GBP

$14,862 USD

View

11 more retailers have this diamond

Prices start from £1,950 GBPSave up to £9,125 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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