Over the past few days, I've noticed extreme price swings at JA. On Friday, I had quite a few stones in my cart that were Round, E/F, VVS2/VS in weights of 1.7-2. All were priced between $3500-5k. Now a similar search has prices nearly 70% higher. Some of the cuts didn't meet GIA/AGS ideal standards but some did. Really confused by the pricing strategy here and wild swings in the market. Seems other sites have followed suit. Could these increases be directly associated with v-day? Any theories out there on why this happens and if I should put my search off until after the made up holiday?