The Jewelry Appraiser, Deborah Villepigue, Appraises Lady Gaga’s Ring for Lifestyle Magazine Article / Jewelry Appraisals / By admin The Jewelry Appraiser Appraises Lady Gaga’s diamond ring at $650,000. Lifestyle magazine chose to trust celebrity jewelry appraiser, Deborah Villepigue to appraise pop star Lady Gaga’s 5 carat diamond ring.