Red diamond next to a Player’s name.

Hello. I am new to this forum, so I apologise in advance if this post is irrelevant to the topic... Anyway, I came across a player that has a red diamond next to their name, as demonstrated by the picture.
Question: Does anybody know what this is indicative of?
Thank you.
Any icon means they have a membership. The red diamond is a flair option. https://support.chess.com/article/673-how-do-i-change-my-icon-or-flair
Hello. I am new to this forum, so I apologise in advance if this post is irrelevant to the topic... Anyway, I came across a player that has a red diamond next to their name, as demonstrated by the picture.
Question: Does anybody know what this is indicative of?
Thank you.