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Cushion|Lab Grown|IGI

1.03ct D FL Cushion Lab Grown Diamond

EX • D/FL • IGI LG818663200

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

Certificate IGI LG818663200

Diamond specifications and retailer prices

From HK$3,240 HKD
$413 USD
As of October 30, 2026
Save HK$15,589 HKD (83%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: HK$18,830 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 LG818663200 or 818663200. Listed at 14 retailers as of October 30, 2026, with prices from HK$3,240 to HK$18,830, a HK$15,589 spread on the same certified stone. Brilliant Earth lists it at HK$18,830. 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
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.4°
Pavilion angle38.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818663200
Dimensions5.98 × 5.93 × 3.83 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
5.98 mm5.93 mm1.03 ctD / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818663200
Side View
Table 62.0%Crown 36.4°Girdle: MED-STKPavilion 38.9°Culet: NoneDepth 64.6%

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$18,830 HKD|Low: HK$2,330 HKD|High: HK$21,026 HKD|Avg: HK$8,140 HKD|-10.4%
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
October 30, 2026
Retailer 12HK$3,240 HKD
Retailer 6HK$3,617 HKD
Retailer 11HK$4,911 HKD
Retailer 4HK$4,943 HKD
Retailer 13HK$5,735 HKD
Retailer 7HK$5,800 HKD
Retailer 3HK$6,018 HKD
Retailer 9HK$6,173 HKD
Retailer 2HK$6,486 HKD
Retailer 5HK$10,749 HKD
Retailer 14HK$11,858 HKD
Retailer 10HK$13,602 HKD
Retailer 8HK$14,109 HKD
Brilliant EarthHK$18,830 HKD

35 data points across 14 retailers

14 retailersHK$3,240 HKD to HK$18,830 HKD

A
Cheapest Retailer
-
HK$3,240 HKD
$413 USD
Final sale: no returns
Retailer 2
-
HK$3,617 HKD
$461 USD
View
Price last confirmed 19 days ago
A
Retailer 3
-
HK$4,911 HKD
$626 USD
View
A
Retailer 4
-
HK$4,943 HKD
$630 USD
View
A
Retailer 5
-
HK$5,735 HKD
$731 USD
View
A
Retailer 6
-
HK$5,800 HKD
€704 EUR
View
A
Retailer 7
-
HK$6,018 HKD
$767 USD
View
A
Retailer 8
-
HK$6,173 HKD
ZAR 12,711 ZAR
View
A
Retailer 9
-
HK$6,486 HKD
£651 GBP
View
Retailer 10
-
HK$10,749 HKD
$1,370 USD
View
Price last confirmed 12 days ago
B
Retailer 11
-
HK$11,858 HKD
$1,511 USD
View
B
Retailer 12
-
HK$13,602 HKD
$1,734 USD
View
B+
Retailer 13
-
HK$14,109 HKD
£1,416 GBP
View
Most Expensive
B
Brilliant Earth
21242362A · Oct 30
HK$18,830 HKD
$2,400 USD
View
13 more retailers have this diamond
Prices start from HK$3,240 HKDSave up to HK$15,589 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$3,240 HKD