From Avalara LandedCost, by the LandedCost Research Team, updated June 1, 2017.
This page provides an overview of the basic import duty rates applied to goods that fall under the classification code 71042000 in Singapore. This product category is defined to include:
"Other synthetic or reconstructed precious or semi-precious stones unworked or simply sawn or roughly shaped not strung mounted or set or temporarily strung for convenience of transport"
Singapore is involved in a total of 3 trade agreements, and is associated with 1 country group.