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Cushion|Lab Grown|IGI

1.05ct E FL Cushion Lab Grown Diamond

ID • E/FL • IGI LG818640096

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG818640096

Diamond specifications and retailer prices

From HK$4,009 HKD
$511 USD
As of October 30, 2026
Save HK$13,487 HKD (77%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: HK$17,496 HKD at Brilliant Earth · As of October 31, 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 LG818640096 or 818640096. Listed at 17 retailers as of October 30, 2026, with prices from HK$4,009 to HK$17,496, a HK$13,487 spread on the same certified stone. Brilliant Earth lists it at HK$17,496. 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 angle34.7°
Pavilion angle39.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818640096
Dimensions6.97 × 5.36 × 3.58 mm
L/W Ratio1.30
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
6.97 mm5.36 mm1.05 ctE / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818640096
Side View
Table 65.0%Crown 34.7°Girdle: MED-THKPavilion 39.6°Culet: NoneDepth 66.8%

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: Oct 30
Current: HK$17,496 HKD|Low: HK$4,009 HKD|High: HK$20,915 HKD|Avg: HK$9,878 HKD|-0.4%
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
Retailer 14
Retailer 15
Retailer 16
October 31, 2026
Retailer 14HK$4,009 HKD
Retailer 13HK$4,519 HKD
Retailer 15HK$5,406 HKD
Retailer 5HK$5,555 HKD
Retailer 7HK$5,570 HKD
Retailer 4HK$6,159 HKD
Retailer 2HK$6,500 HKD
Retailer 9HK$7,361 HKD
Retailer 12HK$7,639 HKD
Retailer 10HK$9,391 HKD
Retailer 6HK$10,950 HKD
Retailer 8HK$14,468 HKD
Retailer 3HK$14,534 HKD
Retailer 16HK$15,796 HKD
Retailer 11HK$16,421 HKD
Brilliant EarthHK$17,496 HKD

39 data points across 16 retailers

17 retailersHK$4,009 HKD to HK$17,496 HKD

A
Cheapest Retailer
-
HK$4,009 HKD
$511 USD
Final sale: no returns
A
Retailer 2
-
HK$4,519 HKD
View
A
Retailer 3
-
HK$5,406 HKD
$689 USD
View
A
Retailer 4
-
HK$5,555 HKD
$708 USD
View
A
Retailer 5
-
HK$5,570 HKD
$710 USD
View
A
Retailer 6
-
HK$6,159 HKD
$785 USD
View
A
Retailer 7
-
HK$6,500 HKD
€789 EUR
View
B+
Retailer 8
-
HK$7,361 HKD
£739 GBP
View
B+
Retailer 9
-
HK$7,639 HKD
ZAR 15,729 ZAR
View
B+
Retailer 10
-
HK$9,391 HKD
$1,197 USD
View
Retailer 11
-
HK$10,260 HKD
$1,308 USD
View
Price last confirmed 52 days ago
B+
Retailer 12
-
HK$10,950 HKD
SGD 1,886 SGD
View
Retailer 13
-
HK$14,468 HKD
£1,452 GBP
View
Price last confirmed 15 days ago
B
Retailer 14
-
HK$14,534 HKD
$1,853 USD
View
B
Retailer 15
-
HK$15,796 HKD
$2,013 USD
View
B
Retailer 16
-
HK$16,421 HKD
£1,648 GBP
View
Most Expensive
B
Brilliant Earth
21086526A · Oct 31
HK$17,496 HKD
$2,230 USD
View
16 more retailers have this diamond
Prices start from HK$4,009 HKDSave up to HK$13,487 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$4,009 HKD