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Cushion|Lab Grown|IGI

6.78ct F VVS1 Cushion Lab Grown Diamond

ID • F/VVS1 • IGI LG806611727

Shape and cutting style on the report: Square cushion modified brilliant

Certificate IGI LG806611727

Diamond specifications and retailer prices

From HK$18,172 HKD
$2,316 USD
As of November 1, 2026
Save HK$48,913 HKD (73%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: HK$118,777 HKD at Queensmith · As of October 9, 2026
View at Queensmith

About this 6.78ct lab-grown cushion diamond

This 6.78ct lab-grown cushion sits in the over five carat band, graded F colour (colourless) and VVS1 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG806611727 or 806611727. Listed at 17 retailers as of November 1, 2026, with a 269% 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
F
Colour
VVS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle39.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG806611727
Dimensions11.14 × 10.95 × 7.26 mm
L/W Ratio1.02
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.14 mm10.95 mm6.78 ctF / VVS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG806611727
Side View
Table 63.0%Crown 35°Girdle: MED-THKPavilion 39.1°Culet: NoneDepth 66.3%

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 1
Current: HK$118,777 HKD|Low: HK$18,172 HKD|High: HK$118,777 HKD|Avg: HK$52,447 HKD
Queensmith
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
November 3, 2026
Retailer 3HK$18,172 HKD
Retailer 2HK$25,886 HKD
Retailer 9HK$28,026 HKD
Retailer 11HK$29,446 HKD
Retailer 13HK$34,879 HKD
Retailer 5HK$35,872 HKD
Retailer 10HK$36,010 HKD
Retailer 6HK$47,106 HKD
Retailer 12HK$51,068 HKD
Retailer 4HK$51,188 HKD
Retailer 8HK$51,235 HKD
Retailer 14HK$56,484 HKD
Retailer 7HK$63,525 HKD
Retailer 16HK$66,445 HKD
Retailer 15HK$67,084 HKD
QueensmithHK$118,777 HKD

42 data points across 16 retailers

17 retailersHK$18,172 HKD to HK$67,084 HKD

A
Cheapest Retailer
-
HK$18,172 HKD
$2,316 USD
Final sale: no returns
A
Retailer 2
-
HK$25,886 HKD
£2,598 GBP
View
B+
Retailer 3
-
HK$28,026 HKD
$3,572 USD
View
B+
Retailer 4
-
HK$29,446 HKD
$3,753 USD
View
B+
Retailer 5
-
HK$34,879 HKD
A$6,839 AUD
View
B+
Retailer 6
-
HK$35,872 HKD
£3,600 GBP
View
B+
Retailer 7
-
HK$36,010 HKD
€4,371 EUR
View
Retailer 8
-
HK$47,106 HKD
$6,004 USD
View
Price last confirmed 7 days ago
B+
Retailer 9
-
HK$49,046 HKD
$6,251 USD
View
B
Retailer 10
-
HK$51,068 HKD
£5,125 GBP
View
B+
Retailer 11
-
HK$51,188 HKD
$6,524 USD
View
Retailer 12
-
HK$51,235 HKD
$6,530 USD
View
Price last confirmed 15 days ago
B
Retailer 13
-
HK$56,484 HKD
$7,199 USD
View
B
Retailer 14
-
HK$63,525 HKD
SGD 10,941 SGD
View
B
Retailer 15
-
HK$66,445 HKD
$8,469 USD
View
B
Retailer 16
-
HK$67,084 HKD
$8,550 USD
View
Most Expensive
Queensmith
LG806611727 · Oct 9
HK$118,777 HKD
£11,920 GBP
View
Price last confirmed 24 days ago
16 more retailers have this diamond
Prices start from HK$18,172 HKDSave up to HK$48,913 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 Cushion
HK$18,172 HKD