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Cushion|Lab Grown|IGI

1.05ct E FL Cushion Lab Grown Diamond

ID • E/FL • IGI LG816610575

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

Certificate IGI LG816610575

Diamond specifications and retailer prices

From HK$2,660 HKD
$339 USD
As of October 30, 2026
Save HK$11,463 HKD (81%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: HK$14,122 HKD at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 1.05ct lab-grown cushion diamond

This 1.05ct lab-grown cushion sits in the classic one-carat band, graded E colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG816610575 or 816610575. Listed at 14 retailers as of October 30, 2026, with prices from HK$2,660 to HK$14,122, a HK$11,463 spread on the same certified stone. Brilliant Earth lists it at HK$14,122. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.05
Carat
E
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.8°
Pavilion angle42.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG816610575
Dimensions5.85 × 5.84 × 4.06 mm
L/W Ratio1.00
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
5.85 mm5.84 mm1.05 ctE / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG816610575
Side View
Table 63.0%Crown 35.8°Girdle: MED-STKPavilion 42.7°Culet: NoneDepth 69.5%

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: Oct 30
Current: HK$14,122 HKD|Low: HK$2,660 HKD|High: HK$16,711 HKD|Avg: HK$7,472 HKD|-15.5%
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
Retailer 14
October 31, 2026
Retailer 13HK$2,660 HKD
Retailer 9HK$3,132 HKD
Retailer 6HK$3,311 HKD
Retailer 8HK$4,472 HKD
Retailer 2HK$4,803 HKD
Retailer 3HK$4,825 HKD
Retailer 12HK$4,990 HKD
Retailer 10HK$5,075 HKD
Retailer 7HK$5,203 HKD
Retailer 4HK$9,863 HKD
Retailer 5HK$10,513 HKD
Retailer 14HK$11,847 HKD
Retailer 11HK$11,957 HKD
Brilliant EarthHK$14,122 HKD

38 data points across 14 retailers

14 retailersHK$2,660 HKD to HK$14,122 HKD

A
Cheapest Retailer
-
HK$2,660 HKD
$339 USD
Final sale: no returns
A
Retailer 2
-
HK$3,132 HKD
£314 GBP
View
Retailer 3
-
HK$3,311 HKD
$422 USD
View
Price last confirmed 19 days ago
A
Retailer 4
-
HK$4,472 HKD
$570 USD
View
A
Retailer 5
-
HK$4,803 HKD
€583 EUR
View
A
Retailer 6
-
HK$4,825 HKD
$615 USD
View
A
Retailer 7
-
HK$4,990 HKD
$636 USD
View
A
Retailer 8
-
HK$5,075 HKD
ZAR 10,449 ZAR
View
A
Retailer 9
-
HK$5,203 HKD
£522 GBP
View
B+
Retailer 10
-
HK$9,863 HKD
$1,257 USD
View
Retailer 11
-
HK$10,513 HKD
$1,340 USD
View
Price last confirmed 12 days ago
B
Retailer 12
-
HK$11,847 HKD
£1,189 GBP
View
B
Retailer 13
-
HK$11,957 HKD
$1,524 USD
View
Most Expensive
B
Brilliant Earth
21019001A · Oct 30
HK$14,122 HKD
$1,800 USD
View
13 more retailers have this diamond
Prices start from HK$2,660 HKDSave up to HK$11,463 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
1.05ct Cushion
HK$2,660 HKD