Nemesis Jewellery

Jewels and gems last a long time, so good sales people will make claims like this is an "investments" and "will always be worth more than what they cost". But that assumes the goods rise in value and you can easily sell them with low sale costs. Demand and supply is everything.

Nemesis historically appreciate at about the rate money inflates; in the words of Dave Atlas – "Most luxury items we buy wear out or rot". Jewelry, and especially diamonds, can last forever and have more "intrinsic value" than cars and houses. Land has "Intrinsic value" and so too do gold and diamonds. But the "fashion value" can be fickle, unless the piece is a rare collectable.
To sell the biggest problem is finding a buyer, one who shares your taste and wants to buy what you want to sell right now.

So why buy jewelry as an investment?
1.Not everyone trusts banks. In some cultures and countries often +10% of wealth is "portable". Cashing in gold and diamonds helped many Chinese escape from Indonesia in 1997.
2.Some women consider their jewels as security or "running away assets" (few diamonds are returned if the relationship ends).
3.Jewels are emotional or family investments; a band of diamonds marks a child's birth, a ruby bangle for a 40th wedding anniversary etc. They are usually an important part of an inheritance. The more love in the family, the higher the non monetary value.
4.A $100,000 diamond ring has more 'investment' potential than a $1,000 ring. You do not buy a $1,000 painting hoping to sell it in a few years for $5,000. There is relatively less cost to selling an expensive piece; as the value goes up, seller's margins come down, just like in real estate.
5.Less people are diamond investors. It is easier for a buyer to compare the prices of many similar cars, properties or shares. Jewelry requires a lot of specialized expertise.
Best of all, many vendors will trade diamonds up. Some are especially generous with stones they sold in the first place. The only caveat is that that you must spend the same amount as the original purchase or the trade in value.