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Cushion|Lab Grown|IGI

1.28ct D VVS1 Cushion Lab Grown Diamond

ID • D/VVS1 • IGI LG786634346

Shape and cutting style on the report: Antique cushion cut

Certificate IGI LG786634346

Diamond specifications and retailer prices

From HK$3,248 HKD
As of November 4, 2026
Save HK$11,557 HKD (78%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: HK$17,138 HKD at Queensmith · As of October 27, 2026
View at Queensmith

About this 1.28ct lab-grown cushion diamond

This 1.28ct lab-grown cushion sits in the one-and-a-quarter to one-and-a-half carat band, graded D colour (colourless) and VVS1 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG786634346 or 786634346. Listed at 18 retailers as of November 3, 2026, with a 356% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.28
Carat
D
Colour
VVS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG786634346
Dimensions7.01 × 6.41 × 3.88 mm
L/W Ratio1.09
Girdle conditionFaceted
Culet sizeLarge
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
7.01 mm6.41 mm1.28 ctD / VVS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG786634346
Side View
Table 53.0%Crown 34.5°Girdle: MED-STKPavilion 40.8°Culet: LargeDepth 60.5%

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 4
Current: HK$6,567 HKD|Low: HK$3,123 HKD|High: HK$14,985 HKD|Avg: HK$7,695 HKD|+1.6%
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
November 4, 2026
Retailer 11HK$3,248 HKD
Retailer 12HK$3,633 HKD
Retailer 5HK$3,640 HKD
Retailer 3HK$4,033 HKD
Retailer 14HK$4,033 HKD
Retailer 9HK$5,178 HKD
Retailer 13HK$5,414 HKD
Retailer 1HK$6,567 HKD
Retailer 8HK$9,823 HKD
Retailer 10HK$11,306 HKD
Retailer 6HK$11,714 HKD
Retailer 4HK$12,812 HKD
Retailer 2HK$12,961 HKD
Retailer 7HK$14,805 HKD

44 data points across 14 retailers

18 retailersHK$3,248 HKD to HK$14,805 HKD

A
Cheapest Retailer
-
HK$3,248 HKD
A
Retailer 2
-
HK$3,633 HKD
View
Final sale: no returns
A
Retailer 3
-
HK$3,640 HKD
View
A
Retailer 4
-
HK$4,033 HKD
View
Retailer 5
-
HK$4,033 HKD
View
Price last confirmed 11 days ago
B+
Retailer 6
-
HK$5,178 HKD
View
B+
Retailer 7
-
HK$5,414 HKD
View
B+
Retailer 8
-
HK$5,594 HKD
View
B+
Retailer 9
-
HK$6,567 HKD
View
B
Retailer 10
-
HK$9,823 HKD
View
B
Retailer 11
-
HK$11,306 HKD
View
B
Retailer 12
-
HK$11,714 HKD
View
B
Retailer 13
-
HK$12,812 HKD
View
B
Retailer 14
-
HK$12,961 HKD
View
B
Retailer 15
-
HK$13,228 HKD
View
B
Retailer 16
-
HK$14,727 HKD
View
B
Retailer 17
-
HK$14,805 HKD
View
Most Expensive
Queensmith
LG786634346 · Oct 27
HK$17,138 HKD
£1,720 GBP
View
Price last confirmed 8 days ago
17 more retailers have this diamond
Prices start from HK$3,248 HKDSave up to HK$11,557 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
1.28ct Cushion
HK$3,248 HKD