Gert had sent me some long grain Olive a while back along with some other African woods so I know how nice it can be.I might be able to source some for you @Von Gruff .. Im not sure how cost effective it would be to ship it to NZ though or what pricing on it here looks like vs there..
One of the dealers I work with here in Dallas usually has a pretty good stock of olive.. I havent had a lot of success in finding really high quality pieces of olive that have nice burled or spalted patterns in it though.. but occasionally I get lucky.. I'd be happy to go look and see what he has on hand, and what price he is asking for it..
Another resource might be @Gert Odendaal .. he sourced some absolutely beautiful olive for me last year on my last SA visit.. Im just not sure how easy it would be go get it shipped from South Africa or how affordable it would be.. (I carried mine home in my checked bags )..
I've found olive to be my favorite hardwood for making knife handles.. its fairly easy to work with and is forgiving.. smells really nice when grinding it in the shop.. and if you can find a piece that is heavily burled or spalted.. it makes for a beautiful end product..
I have an agent in the US and @Stoat Tony Byrd ( Laser Engraving. byrdlaserengraving.com, 309-261-1421 ) in Illinois has been enormously helpfull in sourcing materials and on shipping supplies that I get sent to his place.