Last I checked, Singapore was a tiny nation, all of 719 sq km in area.
With a very high GDP per capita figure (excess of USD 130k per capita per annum), and a population of about 6 million.

This is really impressive and conservative diversification.

https://www.bullionstar.com/blogs/ronan-manly/singapore-the-worlds-largest-central-bank-gold-buyer-in-q1-2023/
GL