In the last few years a new expression has been added to our language - BLOOD DIAMONDS. A film and a TV Documentary by that name was produced in 2006.
"In relation to diamond trading, blood diamond (also called a converted diamond, conflict diamond, hot diamond, or a war diamond) refers to a diamond mined in a war zone and sold to finance an insurgency, invading army's war efforts, or a warlord's activity, usually in Africa." (wikopedia)
Now, there is also something called BLOOD GOLD. The gold we enjoy in our jewelry was produced at great cost which is reflected in the price - today $1209 per ounce.
BLOOD GOLD is made available for our enjoyment and security not by intensive labor but by blood, sweat, tears and death. The blood, sweat tears and death of our Lord Jesus Christ which purchased our redemption. He said, "I go to prepare a place for you --." And the streets of that city are paved with gold. BLOOD GOLD