Keris-making criteria (?)

[Alam Shah]

Hi all,

This was given by the son of a Mahaguru. The 8 categories listed when commissioning a keris.

1. Nagaran
2. Ratna Sepurna
3. Cendrawati Suban Suban
4. Cinta Kuban Mahaladan
5. Vinaran Siran Siran
6. Sanjunan
7. Siku Sanpati
8. Sahoian Dalam Nyor

My questions are:
1) What listing is this?
2) What are the meanings of the terms?
3) What are the category implications?
4) What language is it?
Any assistance would be v. much appreciated. Thank you in advance.