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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 HK$23,302 HKD
$2,970 USD
As of October 30, 2026
Save HK$71,978 HKD (76%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: HK$166,663 HKD 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: HK$27,580 HKD|Low: HK$23,302 HKD|High: HK$134,577 HKD|Avg: HK$50,860 HKD|-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 10HK$23,302 HKD
Retailer 15HK$25,349 HKD
Retailer 5HK$26,095 HKD
Retailer 8HK$27,028 HKD
Retailer 1HK$27,580 HKD
Retailer 2HK$28,284 HKD
Retailer 17HK$28,629 HKD
Retailer 7HK$33,776 HKD
Retailer 11HK$36,526 HKD
Retailer 14HK$38,617 HKD
Retailer 18HK$38,836 HKD
Retailer 4HK$50,161 HKD
Retailer 12HK$52,305 HKD
Retailer 13HK$68,871 HKD
Retailer 6HK$94,097 HKD
Retailer 3HK$94,886 HKD
Retailer 9HK$95,279 HKD
Retailer 16HK$132,498 HKD

19 data points across 18 retailers

21 retailersHK$23,302 HKD to HK$95,279 HKD

A
Cheapest Retailer
-
HK$23,302 HKD
$2,970 USD
A
Retailer 2
-
HK$25,349 HKD
$3,231 USD
View
A
Retailer 3
-
HK$26,095 HKD
$3,326 USD
View
Final sale: no returns
B+
Retailer 4
-
HK$27,028 HKD
$3,445 USD
View
B+
Retailer 5
-
HK$27,580 HKD
£2,768 GBP
View
Retailer 6
-
HK$27,585 HKD
$3,516 USD
View
Price last confirmed 18 days ago
B+
Retailer 7
-
HK$28,284 HKD
$3,605 USD
View
B+
Retailer 8
-
HK$28,629 HKD
$3,649 USD
View
B+
Retailer 9
-
HK$33,776 HKD
$4,305 USD
View
B+
Retailer 10
-
HK$36,526 HKD
£3,666 GBP
View
B+
Retailer 11
-
HK$38,617 HKD
$4,922 USD
View
B+
Retailer 12
-
HK$38,836 HKD
$4,950 USD
View
Retailer 13
-
HK$50,161 HKD
A$9,836 AUD
View
Price last confirmed 8 days ago
B+
Retailer 14
-
HK$52,305 HKD
ZAR 107,702 ZAR
View
B
Retailer 15
-
HK$68,871 HKD
£6,912 GBP
View
B
Retailer 16
-
HK$69,646 HKD
$8,877 USD
View
B
Retailer 17
-
HK$94,097 HKD
$11,993 USD
View
B
Retailer 18
-
HK$94,886 HKD
$12,094 USD
View
B
Retailer 19
-
HK$95,279 HKD
SGD 16,411 SGD
View
Retailer 20
-
HK$132,498 HKD
$16,888 USD
View
Price under review
Most Expensive
Novita Diamonds
cert_838658328 · Oct 8
HK$166,663 HKD
A$32,681 AUD
View
Price under review
20 more retailers have this diamond
Prices start from HK$23,302 HKDSave up to HK$71,978 HKD

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
HK$23,302 HKD