Radiant|Lab Grown|IGI

6.78ct D VVS2 Radiant Lab Grown Diamond

ID • D/VVS2 • IGI LG842631327

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG842631327

Diamond specifications and retailer prices

From €2,553 EUR
$2,864 USD
As of November 1, 2026
Save €6,940 EUR (73%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: €9,494 EUR at Taylor and Hart · As of October 31, 2026
View at Taylor and Hart

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 LG842631327 or 842631327. Listed at 16 retailers as of October 31, 2026, with prices from €2,553 to €9,494, a €6,940 spread on the same certified stone. Taylor and Hart lists it at €9,494. 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
Color
VVS2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle42.1°
Pavilion angle34.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG842631327
Dimensions13.39 × 9.32 × 6.13 mm
L/W Ratio1.44
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
13.39 mm9.32 mm6.78 ctD / VVS2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG842631327
Side View
Table 68.0%Crown 42.1°Girdle: MED-STKPavilion 34.3°Culet: NoneDepth 65.8%

Caratlytics Score

How it works →
A
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: Nov 1
Current: €3,655 EUR|Low: €2,553 EUR|High: €9,767 EUR|Avg: €4,947 EUR|-4.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Taylor and Hart
November 3, 2026
Retailer 15€2,553 EUR
Retailer 5€2,628 EUR
Retailer 13€2,802 EUR
Retailer 4€2,866 EUR
Retailer 1€3,655 EUR
Retailer 12€3,868 EUR
Retailer 10€3,971 EUR
Retailer 11€4,774 EUR
Retailer 9€4,840 EUR
Retailer 2€5,044 EUR
Retailer 14€5,136 EUR
Retailer 6€5,299 EUR
Retailer 3€5,992 EUR
Retailer 7€6,958 EUR
Retailer 8€7,247 EUR
Taylor and Hart€9,494 EUR

25 data points across 16 retailers

16 retailers€2,553 EUR to €9,494 EUR

A
Cheapest Retailer
-
€2,553 EUR
$2,864 USD
A
Retailer 2
-
€2,628 EUR
$2,948 USD
View
Final sale: no returns
A
Retailer 3
-
€2,802 EUR
£2,474 GBP
View
A
Retailer 4
-
€2,866 EUR
$3,215 USD
View
B+
Retailer 5
-
€3,655 EUR
£3,228 GBP
View
B+
Retailer 6
-
€3,868 EUR
$4,338 USD
View
B+
Retailer 7
-
€3,971 EUR
$4,454 USD
View
B+
Retailer 8
-
€4,774 EUR
View
B+
Retailer 9
-
€4,840 EUR
$5,429 USD
View
B+
Retailer 10
-
€5,044 EUR
A$8,703 AUD
View
B+
Retailer 11
-
€5,136 EUR
£4,536 GBP
View
B+
Retailer 12
-
€5,299 EUR
ZAR 96,012 ZAR
View
B
Retailer 13
-
€5,992 EUR
A$10,340 AUD
View
B
Retailer 14
-
€6,958 EUR
$7,804 USD
View
B
Retailer 15
-
€7,247 EUR
£6,400 GBP
View
Most Expensive
B
Taylor and Hart
HGM0G23 · Oct 31
€9,494 EUR
$10,648 USD
View
15 more retailers have this diamond
Prices start from €2,553 EURSave up to €6,940 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.

A
6.78ct Radiant
€2,553 EUR