In the Karen Blixen house grounds in Nairobi there was a glass engraving business, selling items such as wine and drinks glasses, decanters, bowls etc, usually engraved with animals and various wildlife, and they also did attractive floral designs.
The glass items to be engraved were French, but the name of the manufacturer escapes me.
When I lived in Kenya I used to buy items there to bring as gifts to friends in the UK as the quality of the glass was very good as was the engraving.
Look at the Karen Blixen website - I haven't done so - I expect you'll find the glass engraver mentioned there.