Curly Birch is an excellent handle material for a knife and it is what we handle our TimberWolf Bushcraft Knife with. It is essentially a cultivated Silver Birch that grows in a narrow, cold band of the World including Finland where our Birch comes from.
It is durable and lovely to work and so easy to maintain and finish. You can simply sand it to a smooth finish and give it a bath in boiled linseed oil and it is good to go. You don't need any fancy finishing products but you can get a mirror shine if you choose to use a wax or polish.
The advantage of birch for a handle is that if you scratch it or damage it in the field simply sand out the damage and oil it. Easy, simple and great looking; it is probably why it is so favoured in Scandinavia for knife handles.
This is a Grade 1 wood and a Super Grade variety is available in Store.
Block - 125mm x 25mm x 40mm
Scales - 125mm x 10mm x 40mm
(all sizes are approximate but will be as close to advertised)