Gold dropped on Friday before the release of US non-farm payrolls report which could underpin the dollar and weigh on bullion, while ETF holdings posted their biggest quarterly decline ever. Spot gold fell $2.88 an ounce to $1,433.60 an ounce by 0618 GMT, having risen about half a percent on Thursday on inflation worries sparked by rallies in oil and grain prices, notching a 10th straight quarterly gain.