How expensive does jewelry need to be to insure it?

How expensive jewellery needs to be to insure it in Australia, generally worth insuring if over $1,000 to $2,000, as home contents insurance covers unspecific jewellery up to $1,000 per item and $2,000 to $5,000 total, so cheap jewellery under $1,000 automatically covered without listing, but expensive over $1,000 needs specified listing. Most insurers like NRMA, Allianz, Budget Direct have unspecific limit $1,000 per item, so $500 fashion ring covered, but $3K engagement ring not fully covered unless specified as portable valuables with valuation certificate, costing $45 to $90 per year. For standalone specialist like Q Report and Jewellers Mutual, minimum insurable value $1,000 to $2,000, with minimum premium $50, so $1K ring may cost $50 per year, 5% of value, may be borderline worth it, but $2K+ worth it. Industry guideline, insure jewellery over $2,000, as replacement cost $2K+ is significant, and premium $30 to $60 per year reasonable for peace of mind. For $10K ring, definitely insure $150 to $250 per year. For $500 ring, not worth separate insurance, as contents covers. So jewellery needs to be over $1,000 to require specified listing under contents, and over $2,000 to be worth standalone insurance, with $3K+ definitely worth insuring for $60 per year, while under $1,000 not needed as covered by contents unspecific.