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Cushion|Lab Grown|IGI

1.09ct D FL Cushion Lab Grown Diamond

ID • D/FL • IGI LG816624103

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

Certificate IGI LG816624103

Diamond specifications and retailer prices

From HK$3,083 HKD
$393 USD
As of November 1, 2026
Save HK$13,550 HKD (81%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: HK$16,633 HKD at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 1.09ct lab-grown cushion diamond

This 1.09ct lab-grown cushion sits in the classic one-carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG816624103 or 816624103. Listed at 13 retailers as of October 31, 2026, with prices from HK$3,083 to HK$16,633, a HK$13,550 spread on the same certified stone. Brilliant Earth lists it at HK$16,633. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.09
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.2°
Pavilion angle39.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG816624103
Dimensions6.25 × 6.10 × 3.89 mm
L/W Ratio1.02
Girdle conditionFaceted
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
6.25 mm6.10 mm1.09 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG816624103
Side View
Table 61.0%Crown 35.2°Girdle: THN-STKPavilion 39.8°Culet: NoneDepth 63.8%

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$16,633 HKD|Low: HK$3,083 HKD|High: HK$22,282 HKD|Avg: HK$8,422 HKD|-25.4%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 1, 2026
Retailer 11HK$3,083 HKD
Retailer 4HK$3,531 HKD
Retailer 7HK$5,178 HKD
Retailer 10HK$5,327 HKD
Retailer 13HK$5,508 HKD
Retailer 6HK$5,519 HKD
Retailer 8HK$5,891 HKD
Retailer 2HK$6,168 HKD
Retailer 3HK$11,347 HKD
Retailer 5HK$11,376 HKD
Retailer 9HK$13,180 HKD
Retailer 12HK$13,412 HKD
Brilliant EarthHK$16,633 HKD

35 data points across 13 retailers

13 retailersHK$3,083 HKD to HK$16,633 HKD

A
Cheapest Retailer
-
HK$3,083 HKD
$393 USD
Final sale: no returns
Retailer 2
-
HK$3,531 HKD
$450 USD
View
Price last confirmed 7 days ago
A
Retailer 3
-
HK$5,178 HKD
$660 USD
View
A
Retailer 4
-
HK$5,327 HKD
$679 USD
View
A
Retailer 5
-
HK$5,508 HKD
$702 USD
View
A
Retailer 6
-
HK$5,519 HKD
€670 EUR
View
A
Retailer 7
-
HK$5,891 HKD
ZAR 12,131 ZAR
View
A
Retailer 8
-
HK$6,168 HKD
£619 GBP
View
B+
Retailer 9
-
HK$11,347 HKD
$1,446 USD
View
Retailer 10
-
HK$11,376 HKD
$1,450 USD
View
Price last confirmed 13 days ago
B
Retailer 11
-
HK$13,180 HKD
$1,680 USD
View
B+
Retailer 12
-
HK$13,412 HKD
£1,346 GBP
View
Most Expensive
B
Brilliant Earth
21018849A · Oct 31
HK$16,633 HKD
$2,120 USD
View
12 more retailers have this diamond
Prices start from HK$3,083 HKDSave up to HK$13,550 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
1.09ct Cushion
HK$3,083 HKD