CERTIFICATIONS & AFFILIATIONS
Gemstone is proud that is is dual listed by both Home Innovation Lab (Formerly NAHB) and UL (Underwriters Laboratories) in the USA. Gemstone is also listed in CANADA under UL-C. Both Home Innovation Lab and UL are listed under HUD UM Bulletin NO. 73a &B45.5/IAPMO Z124 Harmonized Standard for kitchen sinks and lavatory bowls.