Oval|Lab Grown|GCAL

6.78ct G VS2 Oval Lab Grown Diamond

ID • G/VS2 • GCAL 331704357

Shape and cutting style on the report: Oval brilliant

Certificate GCAL 331704357

Diamond specifications and retailer prices

From €1,392 EUR

$1,555 USD

As of October 29, 2026

Save €3,725 EUR (73%) vs most expensive(unlock to see where)

7 retailers carry this diamond

Most expensive: €5,117 EUR at MOH London · As of October 29, 2026

View at MOH London

About this 6.78ct lab-grown oval diamond

This 6.78ct lab-grown oval sits in the over five carat band, graded G colour (near-colourless) and VS2 clarity (very-slightly-included), with a top-tier cut grade and certified by GCAL 331704357. Listed at 7 retailers as of October 29, 2026, with prices from €1,392 to €5,117, a €3,725 spread on the same certified stone. MOH London lists it at €5,117. 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

VS2

Clarity

Ideal

Cut

Specifications

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle35°

Pavilion angle40°

OriginLab Grown

Grading LabGCAL

CertificateGCAL 331704357

Dimensions15.45 × 10.74 × 6.51 mm

L/W Ratio1.44

Culet sizeNone

Top View

OriginLab Grown

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

CertificateGCAL 331704357

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: Oct 29

Current: €5,117 EUR|Low: €1,336 EUR|High: €5,157 EUR|Avg: €2,695 EUR|+0.5%

MOH London

Retailer 2

Retailer 3

Retailer 4

Retailer 5

Retailer 6

Retailer 7

Retailer 8

October 29, 2026

Retailer 3€1,392 EUR

Retailer 6€1,514 EUR

Retailer 7€2,175 EUR

Retailer 8€2,489 EUR

Retailer 4€2,541 EUR

Retailer 2€2,855 EUR

Retailer 5€3,340 EUR

MOH London€5,117 EUR

13 data points across 8 retailers

7 retailers€1,392 EUR to €5,117 EUR

Cheapest Retailer

€1,392 EUR

$1,555 USD

Retailer 2

€1,514 EUR

$1,692 USD

View

B+

Retailer 3

€2,175 EUR

$2,430 USD

View

B+

Retailer 4

€2,541 EUR

$2,839 USD

View

B+

Retailer 5

€2,855 EUR

$3,190 USD

View

Retailer 6

€3,340 EUR

$3,732 USD

View

Most Expensive

MOH London

331704357 · Oct 29

€5,117 EUR

£4,501 GBP

View

6 more retailers have this diamond

Prices start from €1,392 EURSave up to €3,725 EUR

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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6.78ct Oval

€1,392 EUR