The adamantine lustre of Vajra, or diamond, gives a beautiful "fire" or sparkle to the stone. Value is determined by a grading system that rates colour, clarity, cut and carat weight.
Sukra, or Venus, is harmonized by diamond. Sukra represents luxuries, romance, partnership, wealth, beauty, arts, comforts, jewellery, happiness, and vehicles. Diamonds are also associated with luxuries, jewellery, wealth, beauty and so on. Since antiquity Sukra or Venus has symbolized beauty, not just in material life but inner life as well. The high lustre of diamonds symbolizes the refined liveliness and loveliness of nature within and around us.
Sukra or Venus in the human physiology corresponds to the activity of the pars reticulata. This structure in the physiology refines and controls action in the limbic system related to instincts, feelings and emotions, for example. This action is associated with those impulses in the physiology that correspond to the qualities of life influenced most strongly by Sukra.