1. No idea I would assume the Moon as the moon strongly relates to emotional control and output but I really dont know.
2. It would enhance the work as for colour I would say a soft blue would best or a deep vibrant purple as those colours are associated with bliss and higher states of being
3. 10,40,60,100 would be my go to if unsure on numerology
4. Quarts enhances everything universally, Amethyst has a very pleasent feeling, tigers eye massively counters despair and hopelessness, Diamonds are like quartz but of a more intense and masculine nature and moonstone is great for balancing emotional states. Of all those choices I would say yellow tigers eye.
I think I discovered some things, but I don't know if I'm able to draw substantial conclusions.
1) I found it useful to look up the meaning of the word in Sanskrit, to understand better what it's associated with.
Sananda is a Sanskrit compound consisting of the terms sa and nanda (नन्द).
Sānanda (सानन्द).—a. Happy, delighted.
-ndam ind. Joyfully, delightfully; सानन्दं नन्दिहस्ताहतमुरज (sānandaṃ nandihastāhatamuraja) ...... Mālatīmādhava (Bombay) 1.1. (DDSA: The practical Sanskrit-English dictionary)
Sānanda (सानन्द).—mfn.
(-ndaḥ-ndā-ndaṃ) Happy, delighted, enjoying and endowed with happiness. E. sa with, ānanda happiness. (Source: Cologne Digital Sanskrit Dictionaries: Shabda-Sagara Sanskrit-English Dictionary)
Sananda (सनन्द).—m.
(
-ndaḥ) One of the four sons of Brahma, inhabiting the Janaloka. E.
sa with, nanda pleasure.
Sānanda (सानन्द).—[adjective] glad, happy, delighted with (—°); °— & [neuter] [adverb] (Source: Cologne Digital Sanskrit Dictionaries: Cappeller Sanskrit-English Dictionary)
Ok, so, strangely enough, the word seems to be "Sananda", more than "Sanada". Either I mispronounced the whole time, or we Westerners get it wrong and it seems to fundamentally mean "joy", "happiness" or "delight" (as for semantic field, ie. range of meaning shades it can have),
2) Now, Happiness and Joy are associated with the color Gold (source:
https://templeofzeus.org/Color.php)
3) And Gold is one of the colours of the Sun (the main one).
Therefore, I conclude Sananda is a Solar Mantra, not sure if it has multiple planet connections, though.
4) I don't know anything about the Numbers associated to Planets (I would be really glad if someone gave me resources about it), but the Sun is associated with the Solar plexus, which has
10 (and any multiples) petals. Or I would say something like 6+6+6 =
18, or 6 x 6 x 6 =
216 (which is half of 108, the beads of Satanic Rosary). I don't know if there are any possible connections.
5) I think the Tiger Stone is a good fit, thanks for suggesting it.