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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 $2,759 NZD
$1,555 USD
As of October 29, 2026
Save $7,383 NZD (73%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $10,142 NZD 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 $2,759 to $10,142, a $7,383 spread on the same certified stone. MOH London lists it at $10,142. 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
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
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 29
Current: $10,142 NZD|Low: $2,649 NZD|High: $10,223 NZD|Avg: $5,342 NZD|+0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 29, 2026
Retailer 3$2,759 NZD
Retailer 6$3,002 NZD
Retailer 7$4,312 NZD
Retailer 8$4,933 NZD
Retailer 4$5,037 NZD
Retailer 2$5,660 NZD
Retailer 5$6,622 NZD
MOH London$10,142 NZD

13 data points across 8 retailers

7 retailers$2,759 NZD to $10,142 NZD

A
Cheapest Retailer
-
$2,759 NZD
$1,555 USD
A
Retailer 2
-
$3,002 NZD
$1,692 USD
View
B+
Retailer 3
-
$4,312 NZD
$2,430 USD
View
B+
Retailer 4
-
$5,037 NZD
$2,839 USD
View
B+
Retailer 5
-
$5,660 NZD
$3,190 USD
View
B
Retailer 6
-
$6,622 NZD
$3,732 USD
View
Most Expensive
B
MOH London
331704357 · Oct 29
$10,142 NZD
£4,501 GBP
View
6 more retailers have this diamond
Prices start from $2,759 NZDSave up to $7,383 NZD

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
$2,759 NZD