It's a ring... this could possibly mean that the person that sent it to you wants to marry you, is giving a hint (@all boyfriends), or just showing you an emoji.
Jonah: What do you want for Christmas?
Lex: i don't know Jonahπ
Lex: really? Heck yeah!
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Lex:π
Jonah: hint?
Lex: yupπ
She is the most beautiful and perfect girl out there and she ticks all the boxes. From attention to love etc. if u have her in ur life just know that ur the luckiest person out there