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Cushion|Lab Grown|IGI

1.03ct D FL Cushion Lab Grown Diamond

ID • D/FL • IGI LG818657595

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

Certificate IGI LG818657595

Diamond specifications and retailer prices

From HK$3,193 HKD
$407 USD
As of October 30, 2026
Save HK$15,244 HKD (83%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: HK$18,437 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 D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG818657595 or 818657595. Listed at 14 retailers as of October 30, 2026, with prices from HK$3,193 to HK$18,437, a HK$15,244 spread on the same certified stone. Brilliant Earth lists it at HK$18,437. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.03
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.6°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818657595
Dimensions6.02 × 5.84 × 3.88 mm
L/W Ratio1.03
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
6.02 mm5.84 mm1.03 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818657595
Side View
Table 60.0%Crown 34.6°Girdle: MED-STKPavilion 41°Culet: NoneDepth 66.4%

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$18,437 HKD|Low: HK$2,299 HKD|High: HK$21,026 HKD|Avg: HK$7,989 HKD|-12.3%
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 30, 2026
Retailer 12HK$3,193 HKD
Retailer 6HK$3,578 HKD
Retailer 11HK$4,904 HKD
Retailer 4HK$4,943 HKD
Retailer 13HK$5,680 HKD
Retailer 7HK$5,742 HKD
Retailer 3HK$5,978 HKD
Retailer 9HK$6,101 HKD
Retailer 2HK$6,404 HKD
Retailer 5HK$10,749 HKD
Retailer 14HK$11,726 HKD
Retailer 10HK$13,494 HKD
Retailer 8HK$13,950 HKD
Brilliant EarthHK$18,437 HKD

37 data points across 14 retailers

14 retailersHK$3,193 HKD to HK$18,437 HKD

A
Cheapest Retailer
-
HK$3,193 HKD
$407 USD
Final sale: no returns
Retailer 2
-
HK$3,578 HKD
$456 USD
View
Price last confirmed 18 days ago
A
Retailer 3
-
HK$4,904 HKD
$625 USD
View
A
Retailer 4
-
HK$4,943 HKD
$630 USD
View
A
Retailer 5
-
HK$5,680 HKD
$724 USD
View
A
Retailer 6
-
HK$5,742 HKD
€697 EUR
View
A
Retailer 7
-
HK$5,978 HKD
$762 USD
View
A
Retailer 8
-
HK$6,101 HKD
ZAR 12,562 ZAR
View
A
Retailer 9
-
HK$6,404 HKD
£643 GBP
View
Retailer 10
-
HK$10,749 HKD
$1,370 USD
View
Price last confirmed 12 days ago
B
Retailer 11
-
HK$11,726 HKD
$1,495 USD
View
B
Retailer 12
-
HK$13,494 HKD
$1,720 USD
View
B+
Retailer 13
-
HK$13,950 HKD
£1,400 GBP
View
Most Expensive
B
Brilliant Earth
21241770A · Oct 30
HK$18,437 HKD
$2,350 USD
View
13 more retailers have this diamond
Prices start from HK$3,193 HKDSave up to HK$15,244 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$3,193 HKD