Tiffany & Co.
From their first date, JP x JC knew it was love. Post a photo that represents your love and caption it with both your initials and #BelieveInLove. Keep an eye on our Instagram Stories—we’ll be reposting our favorites.
Source : https://www.instagram.com/p/bf3zs2caxmp
Does this belong to you Or do you know who sells it ?