Use WordPress Dashicons to Add Font Icons to Your Genesis Theme -- http://amethystwebsitedesign.com/use-wordpress-dashicons-to-add-font-icons-to-your-genesis-theme/

functions.php

//Enqueue the Dashicons script
add_action( 'wp_enqueue_scripts', 'amethyst_enqueue_dashicons' );
function amethyst_enqueue_dashicons() {
	wp_enqueue_style( 'amethyst-dashicons-style', get_stylesheet_directory_uri(), array('dashicons'), '1.0' );
}

// Optional Custom entry meta in entry header - remove "by""
add_filter( 'genesis_post_info', 'amethyst_filter_post_info' );
function amethyst_filter_post_info($post_info) {
    $post_info = '[post_date] [post_author_posts_link] [post_comments] [post_edit]';
    return $post_info;
}

// Optional Custom post meta in entry footer - remove text
add_filter( 'genesis_post_meta', 'amethyst_filter_post_meta' );
function amethyst_filter_post_meta($post_meta) {
    $post_meta = '[post_categories before=""] [post_tags before=""]';
    return $post_meta;
}

style.css

.entry-time:before,
.entry-author:before,
.entry-comments-link:before,
.entry-categories:before,
.entry-tags:before {
	color: #f15123; 
	display: inline-block;
	-webkit-font-smoothing: antialiased;
	font: normal 20px/1 'dashicons';
	vertical-align: top;
	margin-right: 5px;
	margin-right: 0.5rem;
}

.entry-time:before {
	content: "\f145"; /* dashicons-calendar */
}

.entry-author:before {
	content: "\f110"; /* dashicons-admin-users */
}

.entry-comments-link:before {
	content: "\f101"; /* dashicons-admin-comments */
}

.entry-categories:before {
	content: "\f318"; /* dashicons-category */
}

.entry-tags:before {
	content: "\f323"; /* dashicons-tag */
}

.entry-time,
.entry-author,
.entry-categories {
	padding-right: 15px;
	padding-right: 1.5rem;
}

/* Optional */
.entry-categories,
.entry-tags {
	display: inline-block;
}