Triangle necklace rhomb pattern

I found a picture of this necklace on pinterest, the creator has a website but its in a different alfabet so I've been unable to find the pattern. Maybe you will have better luck, the website is www.anabel27.com 

Here is the photo from pinterest.

Beads neaded

A = white TOHO treasure #41 219 beads

B = black TOHO treasure #49 209 beads

C = green metallic TOHO treasure #PF560 207 beads

This triangle is made in peyote stitch, the beads marked like this is corner beads. 

1. 3A in a cirkle

2. (2A) x3 step up

3. (2A B)x3 step up

4. (2A 2B)x3 step up

5. (2A B C B)x3 step up

6. (2A B 2C B)x3 step up

7. (2A B C A C B)x3 step up

8. (2C B C 2A C B)x3 step up

9. (2B A C A B A C A)x3 step up

10. (2A C B A 2B A B C)x3 step up

11. (2B B A C A B A C A B)x3 step up

12. (2C A C B C 2A C B C A)x3 step up

13. (2C B C 2B C A C 2B C B)x3 step up

14. (2B 2C B A B 2C B A B 2C)x3 step up

15. (2A B C B 2A B C B 2A B C B)x3 step up

16. (2C A 2B A C A 2B A C A 2B A)x3 step up

17. (2B C A B A 2C A B A 2C A B A C)x3 step up

18. (2A B C 2A C B C 2A C B C 2A C B)x3 step up

19. (2C A B C A C 2B C A C 2B C A C B A)x3 step up

20. (2C C A B 2C B A B 2C B A B 2C B A C)x3 step up

Now your triangle is finished but in order to make it into a necklace we neeed to make a tube for the string. To make the tube you will work back and forth in odd count peyote and then fasten it on the backside.

21.  Pass the tread trough the beads 3C 2A 2B 2C. 

Now you will work flat odd count. Add C B 2A B C B 2A B C turn

22. B A C A 2B A C A B turn

23. B A 2C A B A 2C A B turn

24. A C B C 2A C B C A turn

25. A C 2B C A C 2B C A turn

26. C B A B 2C B A B C turn

27. C B 2A B C B 2A B C turn

28. B A C A 2B A C A B turn

29. B A 2C A B A 2C A B turn

30. A C B C 2A C B C A turn

31. A C 2B C A C 2B C A turn

32. C B A B 2C B A B C turn

33. C B 2A B C B 2A B C turn

34. B A C A 2B A C A B turn

35. B A 2C A B A 2C A B turn

36. A C B C 2A C B C A turn

37. A C 2B C A C 2B C A turn

38. Bend the flat extention towords the backside and fasten it. 

How long your extension have to be depends on the thickness of your strap.