The styles and types of jewellery in the Pacific changes greatly from island to island, as does the purpose of wearing it. As in most cultures, jewellery in the Pacific is worn to symbolise the wearer's power, whether it be wealth or victory in battle. Jewellery in the Pacific, with the exception of Australia, is worn to be a symbol of either power, but in many cases across the Pacific, jewellery is worn to show fertility. As a prime example, the hei-tiki of the New Zealand Māori is said to be a sign of fertility. However, many historians suggest that the carved necklace has connections with Tiki, the first Māori, who also has strong ties with the symbolism of fertility. Historians also speculate that the reason the tiki is worn is that the Tiki is a product of the ancient belief of a god named Tiki. This supreme being is known to be ancient and not solely localised to the Māori, and is thought to date back to before the Māoris even settled in New Zealand.