Should I buy platinum ring in US or Japan?

I live in Honolulu and next month I’m going for vacations to Osaka (Japan). Is my wedding anniversary and want to change my engagement ring for a new one (put diamond in new ring). My budget is $2000. My husband and I went to a couple of stores in Honolulu to check it out. Would I get better prices in rings in... show more I live in Honolulu and next month I’m going for vacations to Osaka (Japan). Is my wedding anniversary and want to change my engagement ring for a new one (put diamond in new ring). My budget is $2000. My husband and I went to a couple of stores in Honolulu to check it out. Would I get better prices in rings in Japan or should I just buy ring here in US?

We going to be just for a few days in Japan, so I don’t want to waste time looking around unnecessarily.

Thanks
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