A jewelry story owner or long time employee would likely qualify to testify at the trial re value of gold. I don't think you need some high-priced gold expert. Some counties also the parties to stipulate to trial by declaration (despite Elkins). IF you wife has agreed to this, you could have the expert do his testimony by declaration (written) and he would just have to show up at trial if wife wanted to cross examine him. If you prove at trial that she tried to scam you out of jewelry in box, the court can award you 100% of the value and order her to pay your fees. Given how badly you exposed her in the depo, I would think that her and her attorney would want to settle and not go to trial.
At trial, you will need testimony of witnesses - you can't submit Declararations if witnesses for trial. You would best retain an experienced Family Law Attorney to advise and represent you in your divorce.
Please note that this answer does not constitute legal advice, and should not be relied on, as each situation is fact specific, and it is not possible to evaluate a legal problem without a comprehensive consultation and review of all the facts and court pleadings filed in the case. This answer does not create an attorney-client relationship.
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