Ok people, here's something from good ol' Cornelius Agrippa's Three Books of Occult Philosophy. In Book II, Chapter XXII the illustrious renaissance guy mentioned the use of planetary squares as talismans. This article will address this topic and expand a bit on it since our venerable predecessor mentioned astrological necessities when it comes to such talismans.
All seven classical planets are mentioned in that chapter alongside each of their respective square, how it should be done, what for and moreover, when. But for this experiment I will solely focus on the square of Venus. It should be noted I have yet to experiment with these talismans, but more than often I have found Agrippa's notes with respect to astrological needs regarding the powers of the talismans also apply in other kinds of planetary magical workings.
Agrippa mentioned the following for Venus:
"The fifth table is of Venus, consisting of a square of seven drawn into it self, viz. of fourty nine numbers, whereof seven on each side and Diameter make 175. and the sum of all is 1225. And there are over it divine names with an Intelligency to good, and spirit to evil; And there is drawn out of it the Character of Venus, and the spirits thereof. This being engraven on a Silver plate, Venus being fortunate, procureth concord, endeth strife, procureth the love of women, conduceth to conception, is good against barreness, causeth ability for generation, dissolves enchantments, and causeth peace between man, and woman, and maketh all kind of Animals and Cattle fruitful; and being put into a Dove-house, causeth an increase of Pigeons. It conduceth to the cure of all melancholy distempers, and causeth joyfulness; and being carryed about travellers make them fortunate. But if it be formed upon Brass with an unfortunate Venus, it causeth contrary things to all that hath bin above said."