Geranium essential oil-
Latin name:  Pelargonium graveolens
Extraction method:  Steam distilled
Parts used:  Leaves
Countries of Origin:  China, Egypt, Reunion Island, India.
Point of interest:  Noted in Battaglia, Third Edition, according to Lis-Balchin that Geranium and Pelargonium are confused by the general population, including aromatherapists.  Should be called Pelargonium hybrids of P. graveolens, and what country oil was sourced from.  Would read Pelargonium, P. graveolens, Reunion Island or Burboun  It's classafied in the same family, Geraniaceae. The scent of the oil is also indicative of where the plant is grown.   
Perfumery note:  Top
Color:  Greenish to olive colored oil. (Reunion Island)
Aroma:  Aroma will differ according to geographical location.  Green floral odor.   (Reunion)  According to Battaglia oil from Reunion has a pungent top note when freshly distilled.   
Properties:  Contact an aromatherapist. 
Energetics:  Chakras-Navel.  TCM-Calms the mind and strengthens the Qi.  Wood Element. 
Blends well with:  Herbs-Angelica, Basil, Bay, Carrot Seed, Citronella, Clary Sage, Rosemary.  Woods-Sandalwood, Cedarwood, Rosewood.  Resins-Frankincense.  Florals-Jasmine, Lavender, Neroli, Rose  Citrus-Grapefruit, Lime, Orange.  Other-Petitgrain.  
Mode of application:  Bath, Topical, compress, massage, skin care, inhalation, diffuser.
Safety information:  Use caution with diabetic medications and medications metabolized by the CYP2B6 enxyme.  Max dermal is 17.5% due to geraniol content. (Tisserand & Young)
Disclaimer: This information is intended for education purposes only and has not been evaluated by the FDA. This information may not be complete or fully accurate. This information is not intended to cure, diagnose, prevent or treat disease.  As with all essential oils, always dilute prior to using topically and please perform a skin patch test prior to using. Essential oils, if used internally, should be under the direction of a qualified practitioner in Aromatic Medicine. Always seek the advise of a qualified, trained aromatherapist. Don't ever hesitate to ask about the education of the Aromatherapist.  Keep out of the reach of children.