Not that you have to be Catholic to pray the rosary. But there's no real point in having one unless you're going to pray it at least once in a while. Unless you're a gang member and wear it around your neck, sort of proving you're not Catholic since it's not supposed to be used as a necklace.

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Melania Trump has rosary blessed by Pope Francis after they joke about Trump's diet
Christina Gregg, AOL.com
May 24th 2017

Melania Trump accompanied husband President Trump in his first official visit to the Vatican on Wednesday as the couple met with Pope Francis.

The Pope also struck up conversation with Melania by asking her in Italian "What do you give him to eat?" referring to President Trump. He then suggested, "Potizza?" which is a Slovenian treat. The first lady reportedly responded with delight and laughed.

After their light-hearted exchange, the Pope blessed a rosary in her hand before moving on to greet Ivanka Trump and Jared Kushner. A rosary is a Catholic string of prayer beads, each bead marking a different prayer.*

~~~~~ continue at ~~~~~

https://www.aol.com/article/news/2017/05/24/melania-trump-has-rosary-blessed-by-pope-francis-after-they-joke-about-trump-diet/22107012/

* That's a very vague description of how to pray the rosary. For the few people who might wonder, here is my favorite accurate description:

http://www.newadvent.org/images/rosary.pdf