1. The basic platform that "Holds the Earth" symbolises the ten virtues of :

Body :	to protect life to practise generosity keep pure morality.
Speech :	to tell the truth to reconcile to speak In a quiet and gentle way to have a sensible speech.
Mind :	to be content to be altruistic to have faith In the right views (which are the correct foundation for liberation).

2. The three steps above symbolise the three refuges one holds on to:

• Buddha
• the reaching of Buddha (Dharma)
• the Assembly of those who practise these teachings (Sangha).

3. The Lion-throne symboliscs the superiority over the whole universe.

4. The treasures vase symboliscs the eight Noble Riches.

5. The small and the big lotuses symbolises the six transcendental virtues :

• generosity
• pure morality
• patience
• energy
• meditation
• wisdom.

6. The four corners of the basic throne symbolise "the Four Unlimited" or Boundless ones:

• unlimited love
• unlimited compassion
• unlimited joy
• unlimited equanimity.

7. The first step symboliscs the fundamental four attentions:

• Impermanence of the body
• sensations
• non-substantiality of thoughts
• condition of existence (dharmas).

8. The second step symbolises the four perfect efforts (Sammapadhana):

• striving to preserve favourable conditions yet existing
• striving to produce such conditions not yet existing
• striving to ward off unfavorable existing conditions
• striving to make It impossible for such conditions to arise.

9. The third step symbolises the four miraculous feet (Riddhipada)

• prayer
• thought
• perserverance
• action.

10. The fourth step symbolises the five spiritual faculties (Indriya)

• the faculty of faith
• the faculty of Energy
• the faculty of Attention
• the faculty of Concentration
• the faculty of Knowledge.

11. The unchanging base that supports the vase symbolises the five forces (Bala)

• The force of faith
• The force of Energy
• The force of Attention
• The force of Concentration
• The force of Knowledge.

12. The vase in Its particularities symbolises, the seven branches of awakening (Bodhyanga)

• the total memory (of past lives)
• the perfect knowledge of all dharmas
• the diligence
• ecstasy
• the perfect mastery of all disciplines
• concentration
• equanimity.

13. The "Tre" (above the vase) and Its reverse symbolisc the noble eightfold path

• perfect view
• perfect understanding
• perfect speech
• perfect action
• perfect living
• perfect effort
• perfect attention
• perfect concentration.

14.The tree of life symbolises the ten knowledges of

• of phenomena
• of mind
• of Interdependent links
• of illusion
• of suffering
• of the origin of suffering
• of the cessation of suffering
• of the path leading to the cessation of suffering
• of destruction
• of the non-appearance
• of the ten transcendental knowledges

15. The thirteen rings symbolise

• the ten powers and
• the three essential remembrances.

16. The umbrella and Its support symbolise the State of a victorious one

17. The "Zaratsak" symbolises the ornaments of all the Supreme Qualities.

18. The Moon symbolises the elimination of all sufferings.

19. The sun symbolises the radiating thousand lights of compassion

20. The jewel at the top symbolises the fulfilment of all wishes.

I prostrate with great devotion and faith before such a wonderful Stupa, the embodiment of all the qualities of the victorious ones; only seeing.it brings liberation to all who respect It.

For (s)he who will establish a connection with such a Stupa, the life will carry Its full meaning

For a more complete documentation, one can refer to the work of Lama Anagarika Govinda "Psychocosmic symbolism of the Buddhist Stupa".  

Translation from the Kangyour by Lama Karta at Karma Migyour Ling