CaratHunter
Plans
Cushion|Lab Grown|IGI

1.09ct D FL Cushion Lab Grown Diamond

VG • D/FL • IGI LG818653702

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG818653702

Diamond specifications and retailer prices

From HK$5,429 HKD
$692 USD
As of October 30, 2026
Save HK$13,479 HKD (71%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: HK$18,908 HKD at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 1.09ct lab-grown cushion diamond

This 1.09ct lab-grown cushion sits in the classic one-carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a very-good cut grade and certified by IGI LG818653702 or 818653702. Listed at 13 retailers as of October 30, 2026, with prices from HK$5,429 to HK$18,908, a HK$13,479 spread on the same certified stone. Brilliant Earth lists it at HK$18,908. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.09
Carat
D
Colour
FL
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.7°
Pavilion angle37.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818653702
Dimensions7.71 × 5.03 × 3.46 mm
L/W Ratio1.53
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
7.71 mm5.03 mm1.09 ctD / FL
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818653702
Side View
Table 62.0%Crown 34.7°Girdle: MED-VTKPavilion 37.4°Culet: NoneDepth 68.8%

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$18,908 HKD|Low: HK$3,797 HKD|High: HK$22,988 HKD|Avg: HK$9,803 HKD|-17.7%
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
November 1, 2026
Retailer 10HK$3,797 HKD
Retailer 11HK$5,429 HKD
Retailer 9HK$5,453 HKD
Retailer 7HK$5,981 HKD
Retailer 13HK$6,049 HKD
Retailer 6HK$6,232 HKD
Retailer 8HK$6,531 HKD
Retailer 3HK$9,093 HKD
Retailer 4HK$10,073 HKD
Retailer 5HK$11,376 HKD
Retailer 12HK$12,508 HKD
Retailer 2HK$14,846 HKD
Brilliant EarthHK$18,908 HKD

39 data points across 13 retailers

13 retailersHK$5,429 HKD to HK$18,908 HKD

Retailer 1
-
HK$3,797 HKD
$484 USD
Price last confirmed 7 days ago
A
Retailer 2
-
HK$5,429 HKD
$692 USD
View
A
Retailer 3
-
HK$5,453 HKD
$695 USD
View
A
Retailer 4
-
HK$5,981 HKD
€726 EUR
View
A
Retailer 5
-
HK$6,049 HKD
$771 USD
View
A
Retailer 6
-
HK$6,232 HKD
£625 GBP
View
A
Retailer 7
-
HK$6,531 HKD
ZAR 13,448 ZAR
View
B+
Retailer 8
-
HK$9,093 HKD
$1,159 USD
View
B+
Retailer 9
-
HK$10,073 HKD
SGD 1,735 SGD
View
Retailer 10
-
HK$11,376 HKD
$1,450 USD
View
Price last confirmed 13 days ago
B
Retailer 11
-
HK$12,508 HKD
$1,594 USD
View
B
Retailer 12
-
HK$14,846 HKD
£1,490 GBP
View
Most Expensive
B
Brilliant Earth
21421259A · Oct 31
HK$18,908 HKD
$2,410 USD
View
12 more retailers have this diamond
Prices start from HK$5,429 HKDSave up to HK$13,479 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
1.09ct Cushion
HK$5,429 HKD