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Cushion|Lab Grown|IGI

0.90ct F SI1 Cushion Lab Grown Diamond

EX • F/SI1 • IGI LG591336118

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG591336118

Diamond specifications and retailer prices

From HK$4,551 HKD
$580 USD
As of November 2, 2026
1 retailer carries this diamond
Only listing: HK$4,551 HKD at Brilliant Earth
Only one retailer lists this diamond right now, and it is shown above, so there is nothing to unlock. Similar diamonds are carried by several retailers.
View at Brilliant Earth

About this 0.9ct lab-grown cushion diamond

This 0.9ct lab-grown cushion sits in the just-under-one-carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG591336118 or 591336118. Listed at a single retailer as of November 2, 2026. If it later appears at another store, Carat Hunter will surface the price comparison automatically. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

0.90
Carat
F
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.5°
Pavilion angle35.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG591336118
Dimensions7.24 × 5.01 × 3.34 mm
L/W Ratio1.45
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
7.24 mm5.01 mm0.90 ctF / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG591336118
Side View
Table 61.0%Crown 33.5°Girdle: THN-MEDPavilion 35.5°Culet: NoneDepth 66.7%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Nov 2
Current: HK$2,157 HKD|Low: HK$1,538 HKD|High: HK$10,671 HKD|Avg: HK$4,158 HKD|-4.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
April 14, 2026
Retailer 4HK$1,538 HKD
Retailer 6HK$1,930 HKD
Retailer 1HK$2,157 HKD
Retailer 3HK$3,336 HKD
Retailer 5HK$4,504 HKD
Retailer 8HK$4,574 HKD
Retailer 7HK$4,893 HKD
Retailer 2HK$10,435 HKD

54 data points across 8 retailers

1 retailer

B
Brilliant Earth
7765865Y · Nov 2
HK$4,551 HKD
$580 USD
View

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.

B
0.90ct Cushion
HK$4,551 HKD