Font, Logo and typesetting for Name & Tagline

I am looking for a logo for my intimacy, connection and sexology coaching and training brand called 'Grailstone'. I am a psychosomatic sex therapist. I work with singles, couples, workshops and retreats.
The Grailstone is a name for the sacred union of masculine and feminine, it is found in many ancient lineages including yoga, gnoistic christianity, Taoism etc. The tag line is (probably) 'Alchemical Intimacy'. I am looking for a stylised name / font for Grailstone, Alchemical Intimacy and a logo. Influenced are the heart, union of opposites, cadeuceus, in yang, Alchemy, masculine feminine. I would like the brand logo and font to have discreet look. More like a black ops, or hidden corporate office or secret society than anything overtly sexual, definitly not hippie. My clients are professionals from business, corporate, the city, finance etc. Needs to be aspirational, excusive, 'james bond tantra'. You might find it embossed on a business card, on a glass door in manhattan as the entrance to a private members club etc. Thanks you!