We, of course, recognize that rings are used extensively in many pagan rituals. This fact, however, in no wise prohibits their use in any Christian service, particularly when the Bible mentions their use with approval. It is certainly more reasonable to expect that Satan, the mimic god, copied their use from Jehovah, rather than to accept the untenable position that Jehovah copied their use from demonic heathen practices. However, if some prefer to dispense with them in their marriage service, it is their right to do so. On this point let each one feel quite free to do that which is proper and right in his own mind.
Watchtower 1956 September 15 p.571 Marriage Ceremony and Requirements
Even where the wedding ring is recognized as marking a married woman and serves notice upon anyone with passionate desires, some may conscientiously object to featuring a ring in the ceremony, having in mind the pagan origin of the customary wedding ring in Christendom.
Watchtower 1972 January 15 p.63 Questions from Readers
Of course, our concern is greater as regards the use of wedding rings, since this relates, not to minor secular matters, but to the marriage relationship, which the Christian rightly views as sacred before God. Really, the question is not so much whether wedding rings were first used by pagans but whether they were originally used as part of false religious practices and still retain such religious significance. As has been shown, the historical evidence does not allow for any definite conclusion on this.For the full quotes, visit http://www.quotes-watchtower.co.uk/wedding_rings.html