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Cushion|Lab Grown|IGI

1.03ct E IF Cushion Lab Grown Diamond

ID • E/IF • IGI LG818663185

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

Certificate IGI LG818663185

Diamond specifications and retailer prices

From HK$4,261 HKD
£428 GBP
As of October 24, 2026
Save HK$8,292 HKD (66%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: HK$12,553 HKD at Brilliant Earth · As of October 24, 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 IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG818663185 or 818663185. Listed at 11 retailers as of October 24, 2026, with prices from HK$4,261 to HK$12,553, a HK$8,292 spread on the same certified stone. Brilliant Earth lists it at HK$12,553. 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
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.1°
Pavilion angle39.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818663185
Dimensions6.08 × 6.02 × 3.81 mm
L/W Ratio1.01
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
6.08 mm6.02 mm1.03 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818663185
Side View
Table 62.0%Crown 34.1°Girdle: MED-STKPavilion 39.3°Culet: NoneDepth 63.3%

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 24
Current: HK$12,553 HKD|Low: HK$1,624 HKD|High: HK$12,945 HKD|Avg: HK$6,020 HKD|-3.0%
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
October 24, 2026
Retailer 12HK$2,095 HKD
Retailer 4HK$2,330 HKD
Retailer 6HK$3,864 HKD
Retailer 5HK$3,923 HKD
Retailer 3HK$3,939 HKD
Retailer 7HK$3,943 HKD
Retailer 2HK$4,261 HKD
Retailer 10HK$4,660 HKD
Retailer 11HK$7,903 HKD
Retailer 9HK$9,456 HKD
Retailer 8HK$10,121 HKD
Retailer 13HK$10,358 HKD
Brilliant EarthHK$12,553 HKD

30 data points across 13 retailers

11 retailersHK$4,261 HKD to HK$12,553 HKD

Retailer 1
-
HK$2,330 HKD
$297 USD
Price last confirmed 18 days ago
Retailer 2
-
HK$3,864 HKD
€469 EUR
View
Price last confirmed 7 days ago
Retailer 3
-
HK$3,939 HKD
$502 USD
View
Price last confirmed 7 days ago
Retailer 4
-
HK$3,943 HKD
ZAR 8,119 ZAR
View
Price last confirmed 7 days ago
A
Retailer 5
-
HK$4,261 HKD
£428 GBP
View
Retailer 6
-
HK$4,660 HKD
$594 USD
View
Price last confirmed 7 days ago
Retailer 7
-
HK$7,903 HKD
$1,007 USD
View
Price last confirmed 7 days ago
Retailer 8
-
HK$9,456 HKD
£949 GBP
View
Price last confirmed 19 days ago
Retailer 9
-
HK$10,121 HKD
$1,290 USD
View
Price last confirmed 12 days ago
Retailer 10
-
HK$10,358 HKD
$1,320 USD
View
Price last confirmed 7 days ago
Most Expensive
B
Brilliant Earth
21242453A · Oct 24
HK$12,553 HKD
$1,600 USD
View
10 more retailers have this diamond
Prices start from HK$4,261 HKDSave up to HK$8,292 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$4,261 HKD