Niue, a sovereign state in free association with New Zealand, uses two official legal tender currencies. The New Zealand Dollar is the circulation currency for daily transactions, while the government also authorises legal tender coins in the Niue Dollar currency for collector's purposes.
A number of mints issue a large variety of commemorative, bullion and collector coins under the authority of Niue. These coins are dedicated to historical or general popular culture themes not related to Niue itself.
Some coins are marketed in standard bullion sizes, like half ounce silver, one ounce silver etc, and some of those are also denominated as $1, for which see respective lists. This coin, denominated as One Niue Dollar, is not in a standard ounce-based size and is made using a "smartminting" technique - meaning that it has features not generally found in circulation coins.
The Mint says about this coin:
For many centuries, sapphire was worn as a symbol of knowledge and wealth only by the rulers and the highest ministry. To this day, it is considered a magical stone which awakens the joy of life. Simultaneously, in the ancient culture of Egypt the scarabs (Scarabaeus) meant a rebirth. | 
Search for Niue: One Dollar Silver 2020 Sapphire Scarab on eBay 
