CaratHunter
Plans
Cushion|Lab Grown|IGI

1.28ct D FL Cushion Lab Grown Diamond

ID • D/FL • IGI LG790683937

Shape and cutting style on the report: Antique cushion cut

Certificate IGI LG790683937

Diamond specifications and retailer prices

From HK$9,313 HKD
$1,187 USD
As of November 1, 2026
Save HK$28,536 HKD (75%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: HK$37,849 HKD at Taylor and Hart · As of October 31, 2026
View at Taylor and Hart

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 FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG790683937 or 790683937. Listed at 13 retailers as of October 31, 2026, with prices from HK$9,313 to HK$37,849, a HK$28,536 spread on the same certified stone. Taylor and Hart lists it at HK$37,849. 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
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.4°
Pavilion angle38.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG790683937
Dimensions7.82 × 5.78 × 3.53 mm
L/W Ratio1.35
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
7.82 mm5.78 mm1.28 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG790683937
Side View
Table 58.0%Crown 37.4°Girdle: MED-THKPavilion 38.5°Culet: LargeDepth 61.1%

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$10,427 HKD|Low: HK$8,944 HKD|High: HK$35,183 HKD|Avg: HK$16,427 HKD|-17.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 1, 2026
Retailer 9HK$9,313 HKD
Retailer 3HK$10,137 HKD
Retailer 1HK$10,427 HKD
Retailer 2HK$10,804 HKD
Retailer 10HK$10,804 HKD
Retailer 7HK$12,161 HKD
Retailer 8HK$15,456 HKD
Retailer 6HK$15,676 HKD
Retailer 12HK$20,250 HKD
Retailer 11HK$20,697 HKD
Retailer 4HK$26,066 HKD
Retailer 5HK$34,715 HKD

42 data points across 12 retailers

13 retailersHK$9,313 HKD to HK$37,849 HKD

A
Cheapest Retailer
-
HK$9,313 HKD
$1,187 USD
B+
Retailer 2
-
HK$10,137 HKD
$1,292 USD
View
B+
Retailer 3
-
HK$10,427 HKD
$1,329 USD
View
Final sale: no returns
Retailer 4
-
HK$10,804 HKD
$1,377 USD
View
Price last confirmed 20 days ago
B+
Retailer 5
-
HK$10,804 HKD
$1,377 USD
View
B+
Retailer 6
-
HK$12,161 HKD
$1,550 USD
View
B+
Retailer 7
-
HK$15,456 HKD
$1,970 USD
View
B+
Retailer 8
-
HK$15,676 HKD
£1,573 GBP
View
B
Retailer 9
-
HK$20,250 HKD
$2,581 USD
View
B
Retailer 10
-
HK$20,697 HKD
$2,638 USD
View
B
Retailer 11
-
HK$26,066 HKD
£2,616 GBP
View
B
Retailer 12
-
HK$34,715 HKD
£3,484 GBP
View
Most Expensive
B
Taylor and Hart
3KZQ333 · Oct 31
HK$37,849 HKD
$4,824 USD
View
12 more retailers have this diamond
Prices start from HK$9,313 HKDSave up to HK$28,536 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$9,313 HKD