The sword is not essential; the knife can always substitute for it. But while every individual Witch has an athame, many covens like to have a coven sword - one for the whole group. The sword is usually used for marking the Circle at the start of the meeting; being used by the Priest/ess or whoever casts the Circle. It can be made in the same way that the knife is, or you can purchase one. There are certainly many companies that offer replicas of ancient swords, these days. If you decide to get a ready-made one, again do some work on it yourself. In fact, since it is a coven tool, it is nice if the whole coven either get together to make one or join in engraving and decorating it. To Consecrate, Rub blade with fresh rosemary or Oak leaves, at sunrise, outdoors where you will be alone. Lay the sword on the ground with it's point to the South. Walk clockwise around it thrice, scattering bay leaves over it. Take up the sword, stand facing East & holding it upward but with arms lowered, invoke the God to infuse your knife or sword with His strength. Point it to the sky, invoking the Goddess to charge your blade with Her love & power. Wrap in Red cloth and take it home. It may be stored in the cloth, If desired.