Buddhism is definitely one of the world's least violent religions. While you hear of Christians waging religious war (Crusades) and Muslims being incredibly violent (Jihad), and even Jews embarking on religious wars in the past when the Hasmoneans were in power (John Hyrcanus), Buddhists don't really fight. They just kind of sit there and meditate.
In fact, one of Buddhisms great accomplishments was the conversiont of Indian king Asoka to buddhism once he realized that fighting and death weren't so much fun after all. The Chinese, however, have been violent towards Tibetan Buddhists because, well, they're Communists, and everyone's equal, and whoever isn't is subjugated or something.
Anyway, buddhist bridal jewelry begins with a dress called Bhaku. It's a full length frock, worn with a blouse made out of silk called a Hanju. The silk is called khichen. The bridal jewelry itself is called Khau consisting of large precious and semi-precious stones like turquoise, coral, pearl and others. They are usually worn around the neck but also on the forehead. Some bridal apparel includes heavy gold bracelets.
None of these jewelry pieces are mandatory. It's just what Buddhists generally do. Since the Buddha shuns physical indulgence, there'd be no reason for Buddhists to consecrate sex or any ceremony leading up to it. It's a wonder they reproduced and still exist, but they're going pretty strong.