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Heart|Lab Grown|IGI

6.78ct D VVS1 Heart Lab Grown Diamond

ID • D/VVS1 • IGI LG838658328

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG838658328

Diamond specifications and retailer prices

From $2,970 USD
As of October 27, 2026
Save $9,174 USD (76%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $21,243 USD at Novita Diamonds · As of October 8, 2026
View at Novita Diamonds

About this 6.78ct lab-grown heart diamond

This 6.78ct lab-grown heart sits in the over five carat band, graded D colour (colourless) and VVS1 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG838658328 or 838658328. Listed at 21 retailers as of October 27, 2026, with a 309% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
VVS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle41.3°
Pavilion angle38.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG838658328
Dimensions11.40 × 13.40 × 7.63 mm
L/W Ratio1.18
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.40 mm13.40 mm6.78 ctD / VVS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG838658328
Side View
Table 66.0%Crown 41.3°Girdle: MED-STKPavilion 38.7°Culet: NoneDepth 56.9%

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: $4,656 USD|Low: $2,970 USD|High: $17,153 USD|Avg: $6,460 USD|-4.5%
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
Retailer 16
Retailer 17
Retailer 18
October 30, 2026
Retailer 10$2,970 USD
Retailer 15$3,231 USD
Retailer 5$3,326 USD
Retailer 8$3,445 USD
Retailer 13$3,525 USD
Retailer 2$3,605 USD
Retailer 17$3,649 USD
Retailer 7$4,305 USD
Retailer 1$4,656 USD
Retailer 14$4,922 USD
Retailer 18$4,950 USD
Retailer 4$6,393 USD
Retailer 11$6,667 USD
Retailer 12$8,778 USD
Retailer 6$11,993 USD
Retailer 3$12,094 USD
Retailer 9$12,144 USD
Retailer 16$16,888 USD

20 data points across 18 retailers

21 retailers$2,970 USD to $12,144 USD

A
Cheapest Retailer
-
$2,970 USD
A
Retailer 2
-
$3,231 USD
View
A
Retailer 3
-
$3,326 USD
View
Final sale: no returns
B+
Retailer 4
-
$3,445 USD
View
Retailer 5
-
$3,516 USD
View
Price last confirmed 17 days ago
B+
Retailer 6
-
$3,525 USD
£2,776 GBP
View
B+
Retailer 7
-
$3,605 USD
View
B+
Retailer 8
-
$3,649 USD
View
B+
Retailer 9
-
$4,305 USD
View
B+
Retailer 10
-
$4,656 USD
£3,666 GBP
View
B+
Retailer 11
-
$4,922 USD
View
B+
Retailer 12
-
$4,950 USD
View
Retailer 13
-
$6,393 USD
A$9,836 AUD
View
Price last confirmed 7 days ago
B+
Retailer 14
-
$6,667 USD
ZAR 107,702 ZAR
View
B
Retailer 15
-
$8,778 USD
£6,912 GBP
View
B
Retailer 16
-
$8,877 USD
View
B
Retailer 17
-
$11,993 USD
View
B
Retailer 18
-
$12,094 USD
View
B
Retailer 19
-
$12,144 USD
SGD 16,411 SGD
View
Retailer 20
-
$16,888 USD
View
Price under review
Most Expensive
Novita Diamonds
cert_838658328 · Oct 8
$21,243 USD
A$32,681 AUD
View
Price under review
20 more retailers have this diamond
Prices start from $2,970 USDSave up to $9,174 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 Heart
$2,970 USD