Logo for Chennai-based Chaitanya Builders designed many years ago. It was based on the golden proportion (or golden mean or golden ratio as it is also known), a concept that was inspired by the book The Power of Limitsby Gyorgi Doczi.
Logo design for ANS Jewelry, Salem done many years ago. The lotus flower design is based on the number 9 which is very sacred in the Indian tradition. For example, the navagrahas (nine planets) and the navarathnas (nine gems).