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 $1,555 USD
As of October 27, 2026
Save $4,161 USD (73%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $5,716 USD 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 27, 2026, with prices from $1,555 to $5,716, a $4,161 spread on the same certified stone. MOH London lists it at $5,716. 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
G
Color
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
15.45 mm10.74 mm6.78 ctG / VS2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGCAL 331704357
Side View
Table 61.0%Crown 35°Girdle: STK-STKPavilion 40°Culet: NoneDepth 60.7%

Caratlytics Score

How it works →
A
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: $5,716 USD|Low: $1,493 USD|High: $5,762 USD|Avg: $3,011 USD|+0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 29, 2026
Retailer 3$1,555 USD
Retailer 6$1,692 USD
Retailer 7$2,430 USD
Retailer 8$2,780 USD
Retailer 4$2,839 USD
Retailer 2$3,190 USD
Retailer 5$3,732 USD
MOH London$5,716 USD

13 data points across 8 retailers

7 retailers$1,555 USD to $5,716 USD

A
Cheapest Retailer
-
$1,555 USD
A
Retailer 2
-
$1,692 USD
View
B+
Retailer 3
-
$2,430 USD
View
B+
Retailer 4
-
$2,839 USD
View
B+
Retailer 5
-
$3,190 USD
View
B
Retailer 6
-
$3,732 USD
View
Most Expensive
B
MOH London
331704357 · Oct 29
$5,716 USD
£4,501 GBP
View
6 more retailers have this diamond
Prices start from $1,555 USDSave up to $4,161 USD

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.

A
6.78ct Oval
$1,555 USD