<font-awesome-icon icon="fa-duotone fa-9" />
<FontAwesomeIcon icon="fa-duotone fa-9" />
.my-icon {
position: relative;
font: var(--fa-font-duotone);
font-style: normal;
}
.my-icon:before {
position: absolute;
content: "\39";
opacity:0.5
}
.my-icon:after {
content: "\39\39";
}
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 320 512" style="width: 30px;height: 30px;fill: black">
<path d="M160 32.01c-88.22 0-160 71.78-160 160c0 85.57 67.71 155.1 152.3 159.2l-64.65 76.06c-11.47 13.45-9.812 33.66 3.656 45.09c6 5.125 13.38 7.62 20.72 7.62c9.062 0 18.06-3.823 24.38-11.28C281.9 297.5 320 266.6 320 192C320 103.8 248.2 32.01 160 32.01zM160 288c-52.94 0-96-43.06-96-95.1s43.06-96 96-96s96 43.06 96 96S212.9 288 160 288z"/>
<path style="opacity: 0.5" d=""/>
</svg>
<i class="fa-duotone fa-9"></i>