Contextual Gemini

Gemini's Tarot card is The Lovers: This card represents love, beauty, perfection,harmony. Possibly the beginning of a romance. It invites to letting oneself go. The necessity of testing or subjecting to trial. Struggle between sacred and profane love. It relates to a person deeply involved in the emotions and problems of a friend or relative. 
The birthstone of Gemini is supposed to be green jade. Gems such as the aquamarine, beryl, and agate are also connected to Gemini. 
So are lavender, wildflowers, lily-of-the-valley, and woodbine.  Yellow, particularly light yellow,is associated with Gemini. It is reputed to be a mental colour. Think of what would appeal to a young child and those colours and objects are likely to be related to Gemini. 
While no animal appears to be associated with the sign other than the wolf in which is seen to be the nurturing force for another set of 'twins', Romulus and Remus, the twins themselves are their own sign representatives.