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Cushion|Lab Grown|IGI

1.03ct E FL Cushion Lab Grown Diamond

ID • E/FL • IGI LG818662845

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

Certificate IGI LG818662845

Diamond specifications and retailer prices

From HK$2,824 HKD
$360 USD
As of October 30, 2026
Save HK$9,807 HKD (78%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: HK$12,632 HKD at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 1.03ct lab-grown cushion diamond

This 1.03ct 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 LG818662845 or 818662845. Listed at 15 retailers as of October 30, 2026, with prices from HK$2,824 to HK$12,632, a HK$9,807 spread on the same certified stone. Brilliant Earth lists it at HK$12,632. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.03
Carat
E
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.6°
Pavilion angle39.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818662845
Dimensions6.09 × 6.09 × 3.81 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
6.09 mm6.09 mm1.03 ctE / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818662845
Side View
Table 60.0%Crown 34.6°Girdle: MediumPavilion 39.1°Culet: NoneDepth 62.6%

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$12,632 HKD|Low: HK$2,824 HKD|High: HK$17,104 HKD|Avg: HK$7,519 HKD|-26.1%
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
October 31, 2026
Retailer 15HK$2,824 HKD
Retailer 9HK$3,315 HKD
Retailer 7HK$3,499 HKD
Retailer 8HK$4,747 HKD
Retailer 14HK$4,880 HKD
Retailer 3HK$5,068 HKD
Retailer 10HK$5,099 HKD
Retailer 12HK$5,370 HKD
Retailer 2HK$5,534 HKD
Retailer 5HK$5,586 HKD
Retailer 6HK$10,317 HKD
Retailer 4HK$10,401 HKD
Retailer 13HK$12,401 HKD
Retailer 11HK$12,595 HKD
Brilliant EarthHK$12,632 HKD

37 data points across 15 retailers

15 retailersHK$2,824 HKD to HK$12,632 HKD

A
Cheapest Retailer
-
HK$2,824 HKD
$360 USD
Final sale: no returns
A
Retailer 2
-
HK$3,315 HKD
£333 GBP
View
Retailer 3
-
HK$3,499 HKD
$446 USD
View
Price last confirmed 19 days ago
A
Retailer 4
-
HK$4,747 HKD
$605 USD
View
A
Retailer 5
-
HK$4,880 HKD
$622 USD
View
A
Retailer 6
-
HK$5,068 HKD
$646 USD
View
A
Retailer 7
-
HK$5,099 HKD
€619 EUR
View
A
Retailer 8
-
HK$5,370 HKD
ZAR 11,058 ZAR
View
A
Retailer 9
-
HK$5,534 HKD
£555 GBP
View
A
Retailer 10
-
HK$5,586 HKD
$712 USD
View
Retailer 11
-
HK$10,317 HKD
$1,315 USD
View
Price last confirmed 12 days ago
B
Retailer 12
-
HK$10,401 HKD
$1,326 USD
View
B
Retailer 13
-
HK$12,401 HKD
$1,581 USD
View
B
Retailer 14
-
HK$12,595 HKD
£1,264 GBP
View
Most Expensive
B
Brilliant Earth
21242374A · Oct 30
HK$12,632 HKD
$1,610 USD
View
14 more retailers have this diamond
Prices start from HK$2,824 HKDSave up to HK$9,807 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
1.03ct Cushion
HK$2,824 HKD