Radiant|Lab Grown|IGI

6.78ct D VVS2 Radiant Lab Grown Diamond

ID • D/VVS2

Diamond specifications and retailer prices

From $4,651 NZD
$2,617 USD
As of November 2, 2026
Save $21,763 NZD (82%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $26,414 NZD 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 $4,651 to $26,414, a $21,763 spread on the same certified stone. With Clarity lists it at $26,414. 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: $5,396 NZD|Low: $4,651 NZD|High: $28,711 NZD|Avg: $12,391 NZD|-2.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
With Clarity
November 3, 2026
Retailer 2$4,651 NZD
Retailer 6$5,120 NZD
Retailer 1$5,396 NZD
Retailer 5$5,863 NZD
Retailer 4$7,459 NZD
Retailer 7$8,331 NZD
Retailer 3$18,091 NZD
Retailer 8$19,417 NZD
With Clarity$26,414 NZD

25 data points across 9 retailers

12 retailers$4,651 NZD to $26,414 NZD

A
Cheapest Retailer
-
$4,651 NZD
$2,617 USD
Retailer 2
-
$4,760 NZD
$2,678 USD
View
Price last confirmed 10 days ago
A
Retailer 3
-
$5,120 NZD
$2,881 USD
View
Retailer 4
-
$5,149 NZD
$2,897 USD
View
Price last confirmed 9 days ago
A
Retailer 5
-
$5,396 NZD
$3,036 USD
View
Retailer 6
-
$5,490 NZD
$3,089 USD
View
Price last confirmed 8 days ago
A
Retailer 7
-
$5,863 NZD
$3,299 USD
View
B+
Retailer 8
-
$7,459 NZD
$4,197 USD
View
Retailer 9
-
$7,546 NZD
$4,246 USD
View
Price last confirmed 8 days ago
B
Retailer 10
-
$18,091 NZD
SGD 13,755 SGD
View
Retailer 11
-
$19,417 NZD
$10,925 USD
View
Price last confirmed 21 days ago
Most Expensive
B
With Clarity
842631327 · Nov 3
$26,414 NZD
$14,862 USD
View
11 more retailers have this diamond
Prices start from $4,651 NZDSave up to $21,763 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 Radiant
$4,651 NZD