diff --git a/build/blocks/block-coauthors/block.json b/build/blocks/block-coauthors/block.json
index 08bc0a92..ea25755b 100644
--- a/build/blocks/block-coauthors/block.json
+++ b/build/blocks/block-coauthors/block.json
@@ -40,28 +40,12 @@
     }
   },
   "attributes": {
-    "separator": {
-      "type": "string",
-      "default": ", "
-    },
-    "lastSeparator": {
-      "type": "string",
-      "default": " and "
-    },
     "layout": {
       "type": "object",
       "default": {
         "type": "inline"
       }
     },
-    "prefix": {
-      "type": "string",
-      "default": "By "
-    },
-    "suffix": {
-      "type": "string",
-      "default": ""
-    },
     "textAlign": {
       "type": "string"
     }
diff --git a/php/blocks/block-coauthors/class-block-coauthors.php b/php/blocks/block-coauthors/class-block-coauthors.php
index 9add8e35..794e2206 100644
--- a/php/blocks/block-coauthors/class-block-coauthors.php
+++ b/php/blocks/block-coauthors/class-block-coauthors.php
@@ -22,6 +22,9 @@ class Block_CoAuthors {
 	 * @since 3.6.0
 	 */
 	public static function register_block(): void {
+
+		add_filter( 'block_type_metadata_settings', array( __CLASS__, 'separator_internationalization' ), 10, 2 );
+
 		register_block_type(
 			dirname( COAUTHORS_PLUS_FILE ) . '/build/blocks/block-coauthors',
 			array(
@@ -30,6 +33,52 @@ public static function register_block(): void {
 		);
 	}
 
+	/**
+	 * Separator Internationalization
+	 * Provide i18n for the default prefix, separators and suffix attributes during block registration.
+	 *
+	 * @param array $settings Array of determined settings for registering a block type.
+	 * @param array $metadata Metadata provided for registering a block type.
+	 * @return array Updated settings that include internationalized attributes.
+	 */
+	public static function separator_internationalization( array $settings, array $metadata ): array {
+
+		if ( ! array_key_exists( 'name', $metadata ) ) {
+			return $settings;
+		}
+
+		if ( 'cap/coauthors' !== $metadata['name'] ) {
+			return $settings;
+		}
+
+		return array_merge(
+			$settings,
+			array(
+				'attributes' => array_merge(
+					$settings['attributes'],
+					array(
+						'prefix'        => array(
+							'type'    => 'string',
+							'default' => apply_filters( 'coauthors_default_before', __( 'By ', 'co-authors-plus' ) ),
+						),
+						'separator'     => array(
+							'type'    => 'string',
+							'default' => apply_filters( 'coauthors_default_between', ', ' ),
+						),
+						'lastSeparator' => array(
+							'type'    => 'string',
+							'default' => apply_filters( 'coauthors_default_between_last', __( ' and ', 'co-authors-plus' ) ),
+						),
+						'suffix'        => array(
+							'type'    => 'string',
+							'default' => apply_filters( 'coauthors_default_after', '' ),
+						),
+					)
+				),
+			)
+		);
+	}
+
 	/**
 	 * Render Block
 	 *
diff --git a/src/blocks/block-coauthors/block.json b/src/blocks/block-coauthors/block.json
index 72aa1aab..28ba4d55 100644
--- a/src/blocks/block-coauthors/block.json
+++ b/src/blocks/block-coauthors/block.json
@@ -38,28 +38,12 @@
 		}
 	},
 	"attributes": {
-		"separator": {
-			"type": "string",
-			"default": ", "
-		},
-		"lastSeparator": {
-			"type": "string",
-			"default": " and "
-		},
 		"layout": {
 			"type": "object",
 			"default": {
 				"type": "inline"
 			}
 		},
-		"prefix": {
-			"type": "string",
-			"default": "By "
-		},
-		"suffix": {
-			"type": "string",
-			"default": ""
-		},
 		"textAlign": {
 			"type": "string"
 		}