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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 $3,797 SGD
$2,970 USD
As of October 30, 2026
Save $11,728 SGD (76%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $27,157 SGD 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 30, 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
Colour
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 30
Current: $4,494 SGD|Low: $3,797 SGD|High: $21,928 SGD|Avg: $8,287 SGD|-2.9%
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
Retailer 16
Retailer 17
Retailer 18
October 30, 2026
Retailer 10$3,797 SGD
Retailer 15$4,131 SGD
Retailer 5$4,252 SGD
Retailer 8$4,404 SGD
Retailer 1$4,494 SGD
Retailer 2$4,609 SGD
Retailer 17$4,665 SGD
Retailer 7$5,504 SGD
Retailer 11$5,952 SGD
Retailer 14$6,292 SGD
Retailer 18$6,328 SGD
Retailer 4$8,173 SGD
Retailer 12$8,523 SGD
Retailer 13$11,222 SGD
Retailer 6$15,332 SGD
Retailer 3$15,461 SGD
Retailer 9$15,525 SGD
Retailer 16$21,590 SGD

19 data points across 18 retailers

21 retailers$3,797 SGD to $15,525 SGD

A
Cheapest Retailer
-
$3,797 SGD
$2,970 USD
A
Retailer 2
-
$4,131 SGD
$3,231 USD
View
A
Retailer 3
-
$4,252 SGD
$3,326 USD
View
Final sale: no returns
B+
Retailer 4
-
$4,404 SGD
$3,445 USD
View
B+
Retailer 5
-
$4,494 SGD
£2,768 GBP
View
Retailer 6
-
$4,495 SGD
$3,516 USD
View
Price last confirmed 18 days ago
B+
Retailer 7
-
$4,609 SGD
$3,605 USD
View
B+
Retailer 8
-
$4,665 SGD
$3,649 USD
View
B+
Retailer 9
-
$5,504 SGD
$4,305 USD
View
B+
Retailer 10
-
$5,952 SGD
£3,666 GBP
View
B+
Retailer 11
-
$6,292 SGD
$4,922 USD
View
B+
Retailer 12
-
$6,328 SGD
$4,950 USD
View
Retailer 13
-
$8,173 SGD
A$9,836 AUD
View
Price last confirmed 8 days ago
B+
Retailer 14
-
$8,523 SGD
ZAR 107,702 ZAR
View
B
Retailer 15
-
$11,222 SGD
£6,912 GBP
View
B
Retailer 16
-
$11,348 SGD
$8,877 USD
View
B
Retailer 17
-
$15,332 SGD
$11,993 USD
View
B
Retailer 18
-
$15,461 SGD
$12,094 USD
View
B
Retailer 19
-
$15,525 SGD
View
Retailer 20
-
$21,590 SGD
$16,888 USD
View
Price under review
Most Expensive
Novita Diamonds
cert_838658328 · Oct 8
$27,157 SGD
A$32,681 AUD
View
Price under review
20 more retailers have this diamond
Prices start from $3,797 SGDSave up to $11,728 SGD

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
$3,797 SGD