By Richard Horgan Los Angeles (Knewz) — According to the National Retail Federation and Prosper Insights & Analytics, Mother’s Day spending this year will total $31.7 billion, or an average of $245.76 per person. Brunch, dinner, flowers and cards are well-entrenched spending categories. But rising to new prominence is a choice that may surprise – jewelry. Total bauble spending is expected to account through this coming weekend for seven of the aforementioned $31.7 billion. “Jewelry continues to capture an increasing Mother’s Day market share,” said Prosper Vice President of Strategy Phil Rist….