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Radiant|Lab Grown|IGI

6.78ct D VVS2 Radiant Lab Grown Diamond

ID • D/VVS2

Diamond specifications and retailer prices

From $3,734 AUD
$2,617 USD
As of November 2, 2026
Save $17,472 AUD (82%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $21,207 AUD 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 $3,734 to $21,207, a $17,472 spread on the same certified stone. With Clarity lists it at $21,207. 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
D
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
13.39 mm9.32 mm6.78 ctD / VVS2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI
Side View
Table 68.0%CrownGirdle: MED-STKPavilionCulet: NoneDepth 65.8%

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: Nov 2
Current: $3,734 AUD|Low: $3,734 AUD|High: $23,050 AUD|Avg: $9,948 AUD|-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$3,734 AUD
Retailer 6$4,111 AUD
Retailer 3$4,356 AUD
Retailer 5$4,707 AUD
Retailer 4$5,989 AUD
Retailer 7$6,688 AUD
Retailer 2$14,524 AUD
Retailer 8$15,589 AUD
With Clarity$21,207 AUD

25 data points across 9 retailers

12 retailers$3,734 AUD to $21,207 AUD

A
Cheapest Retailer
-
$3,734 AUD
$2,617 USD
Retailer 2
-
$3,821 AUD
$2,678 USD
View
Price last confirmed 10 days ago
A
Retailer 3
-
$4,111 AUD
$2,881 USD
View
Retailer 4
-
$4,134 AUD
$2,897 USD
View
Price last confirmed 9 days ago
A
Retailer 5
-
$4,356 AUD
$3,053 USD
View
Retailer 6
-
$4,408 AUD
$3,089 USD
View
Price last confirmed 8 days ago
A
Retailer 7
-
$4,707 AUD
$3,299 USD
View
B+
Retailer 8
-
$5,989 AUD
$4,197 USD
View
Retailer 9
-
$6,059 AUD
$4,246 USD
View
Price last confirmed 8 days ago
B
Retailer 10
-
$14,524 AUD
SGD 13,755 SGD
View
Retailer 11
-
$15,589 AUD
$10,925 USD
View
Price last confirmed 21 days ago
Most Expensive
B
With Clarity
842631327 · Nov 3
$21,207 AUD
$14,862 USD
View
11 more retailers have this diamond
Prices start from $3,734 AUDSave up to $17,472 AUD

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 Radiant
$3,734 AUD