Gold prices finishedslightly weak on Saturday after retreating from its three-month high at bullion market here due to lack of buying interest at existing levels amid caution in the face of sharp global volatility. Silver dropped sharply on the back of heavy speculative unwinding. Standard gold (99.5 purity) softened by Rs 5 to end at Rs 27,465 from overnight closing level of Rs 27,470. Pure gold (99.9 purity) also easedby a similar margin to settle at Rs 27,615 per 10 grams as compared toRs 27,620 on Friday.