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Cushion|Lab Grown|IGI

1.09ct D FL Cushion Lab Grown Diamond

ID • D/FL • IGI LG846663309

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG846663309

Diamond specifications and retailer prices

From HK$3,321 HKD
£333 GBP
As of November 1, 2026
Save HK$14,096 HKD (81%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: HK$17,417 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 top-tier cut grade and certified by IGI LG846663309 or 846663309. Listed at 8 retailers as of October 31, 2026, with prices from HK$3,321 to HK$17,417, a HK$14,096 spread on the same certified stone. Brilliant Earth lists it at HK$17,417. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.09
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.7°
Pavilion angle35.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG846663309
Dimensions7.98 × 5.20 × 3.48 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
7.98 mm5.20 mm1.09 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG846663309
Side View
Table 63.0%Crown 33.7°Girdle: STK-THKPavilion 35.3°Culet: NoneDepth 66.9%

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: Nov 1
Current: HK$17,417 HKD|Low: HK$3,321 HKD|High: HK$22,282 HKD|Avg: HK$8,846 HKD|-21.8%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 1, 2026
Retailer 4HK$3,321 HKD
Retailer 5HK$4,433 HKD
Retailer 3HK$5,210 HKD
Retailer 6HK$5,468 HKD
Retailer 8HK$6,780 HKD
Retailer 2HK$12,923 HKD
Retailer 7HK$13,502 HKD
Brilliant EarthHK$17,417 HKD

7 data points across 8 retailers

8 retailersHK$3,321 HKD to HK$17,417 HKD

A
Cheapest Retailer
-
HK$3,321 HKD
£333 GBP
A
Retailer 2
-
HK$4,433 HKD
$565 USD
View
A
Retailer 3
-
HK$5,210 HKD
$664 USD
View
A
Retailer 4
-
HK$5,468 HKD
$697 USD
View
B+
Retailer 5
-
HK$6,780 HKD
€823 EUR
View
B
Retailer 6
-
HK$12,923 HKD
£1,297 GBP
View
B+
Retailer 7
-
HK$13,502 HKD
$1,721 USD
View
Most Expensive
B
Brilliant Earth
22315344A · Oct 31
HK$17,417 HKD
$2,220 USD
View
7 more retailers have this diamond
Prices start from HK$3,321 HKDSave up to HK$14,096 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$3,321 HKD