"Háromszöges Nyaklánc"
Source: From a booklet: Gyöngyvarázs (Publisher: Printker Plus Rt.; language:Hungarian)
HaromszogesGyongynyakek intermediate
Modification: The middle triangle has 16 rows here (only 12 on the original one). This is why I have more triangles.
Note: Title means "Triangle shaped necklace". I kept the original name to help you to find the pattern.
It can be found at many sites, for example at http://www.gyongyvilag.fw.hu/.
The pattern is in Hungarian, but unless you are complete biginner, you will figure out the way of beading.