You can review the details, below, to learn more about the cash paid by buyers for this gem -- these gems. For one diamond, it's current value and last purchase price are unknown.
The site documents several diamonds owned by this famous couple. Your question is unclear as to which diamond you reference.
In 1979, Elizabeth Taylor sold the Taylor-Burton Diamond for US$5,000,000 to the New York jeweler Henry Lambert. The present owner, Robert Mouawad purchased it from the jeweler for an undisclosed sum.
Elizabeth Taylor
Any diamond is worth whatever someone will pay you for it.
Any diamond is worth whatever someone will pay you for it.
Big is relative. As an example, Elizabeth Taylor wears the Taylor-Burton diamond of roughly 69 carats in the photo, below. For most women, this stone is about as big as one might want to wear, although Elizabeth Taylor was only seen wearing it in public once. She feared is loss or theft. After their divorce, she auctioned the stone and it fetched US$5,000,000 in 1978. A current value would be higher.
100-10000 USD
Any diamond is worth whatever someone will pay you for it. Z4 is not a common notation that describes a gem-quality diamond.
I think you are asking if a natural clean diamond is worth as much as a natural diamond that is Not considered clean? The answer is no. A clean diamond means that it is clear from imperfections. Now this can mean clear to the naked eye, or clear under a microscope. Of course the diamond that is clear under the microscope is much worth more than a diamond that is only clear to the naked eye.
priceless!
Your answer depends on the quality of the diamond you're buying/ selling.
$300m ish
$100 to $42,000