This pattern is written in Japanese.
It is charted pattern.

Please download basic information on how to read Japanese charted patterns:
http://www.tezukuritown.com/nihonvogue_ravelry/doc/dl_Jap...

Tools: Japanese size 10 knitting needles (5.1mm) and 12mm needles

Note: necklace shown in pattern photo can be found on Ravelry here.