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Cushion|Lab Grown|IGI

1.28ct D VS1 Cushion Lab Grown Diamond

ID • D/VS1 • IGI LG786634100

Shape and cutting style on the report: Antique cushion cut

Certificate IGI LG786634100

Diamond specifications and retailer prices

From HK$2,495 HKD
$318 USD
As of November 1, 2026
Save HK$13,946 HKD (85%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: HK$16,442 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 VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG786634100 or 786634100. Listed at 18 retailers as of October 27, 2026, with prices from HK$2,495 to HK$16,442, a HK$13,946 spread on the same certified stone. Queensmith lists it at HK$16,442. 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
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle41.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG786634100
Dimensions7.02 × 6.25 × 3.93 mm
L/W Ratio1.12
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
7.02 mm6.25 mm1.28 ctD / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG786634100
Side View
Table 52.0%Crown 34.5°Girdle: Slightly ThickPavilion 41.1°Culet: LargeDepth 62.9%

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: Nov 1
Current: HK$5,517 HKD|Low: HK$2,393 HKD|High: HK$12,545 HKD|Avg: HK$6,212 HKD|+3.2%
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 2, 2026
Retailer 11HK$2,495 HKD
Retailer 5HK$2,793 HKD
Retailer 4HK$2,895 HKD
Retailer 2HK$3,091 HKD
Retailer 13HK$3,091 HKD
Retailer 12HK$4,158 HKD
Retailer 9HK$4,315 HKD
Retailer 1HK$5,517 HKD
Retailer 8HK$7,543 HKD
Retailer 10HK$9,070 HKD
Retailer 3HK$9,899 HKD
Retailer 14HK$9,941 HKD
Retailer 6HK$12,077 HKD
Retailer 7HK$12,396 HKD

44 data points across 14 retailers

18 retailersHK$2,495 HKD to HK$16,442 HKD

A
Cheapest Retailer
-
HK$2,495 HKD
$318 USD
A
Retailer 2
-
HK$2,793 HKD
$356 USD
View
Final sale: no returns
A
Retailer 3
-
HK$2,895 HKD
$369 USD
View
Retailer 4
-
HK$3,091 HKD
$394 USD
View
Price last confirmed 8 days ago
A
Retailer 5
-
HK$3,091 HKD
$394 USD
View
A
Retailer 6
-
HK$4,158 HKD
$530 USD
View
B+
Retailer 7
-
HK$4,315 HKD
$550 USD
View
B+
Retailer 8
-
HK$4,339 HKD
$553 USD
View
B+
Retailer 9
-
HK$5,517 HKD
£554 GBP
View
B
Retailer 10
-
HK$7,543 HKD
A$1,479 AUD
View
B
Retailer 11
-
HK$9,070 HKD
$1,156 USD
View
B
Retailer 12
-
HK$9,899 HKD
SGD 1,705 SGD
View
B
Retailer 13
-
HK$9,941 HKD
$1,267 USD
View
B
Retailer 14
-
HK$10,298 HKD
$1,312 USD
View
B
Retailer 15
-
HK$12,077 HKD
£1,212 GBP
View
B
Retailer 16
-
HK$12,316 HKD
$1,570 USD
View
B
Retailer 17
-
HK$12,396 HKD
£1,244 GBP
View
Most Expensive
B
Queensmith
LG786634100 · Oct 27
HK$16,442 HKD
£1,650 GBP
View
17 more retailers have this diamond
Prices start from HK$2,495 HKDSave up to HK$13,946 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$2,495 HKD