Generally Diamond can be termed as an expensive stone, the size would matter, bigger the stone higher the cost.
The most expensive stone is the dimond
A large emerald stone given to the United States by France
There are plenty of expensive broach stones, and some can reach into the tens or hundreds of thousands of dollars.
Stone for stone, a diamond is more expensive than an emerald.
Because that was the stone that could be quarried locally. Transporting structural stone is very expensive, so most stone construction, especially most old stone construction, is in local stone with limited and special use of anything from far away.
its not true... some semi-precious stone are more expensive than precious and even diamonds.
Of the common, popular cuts, generally, emerald cut tends to be chosen as a cut when the stone is flawless or internally flawless. So a larger -- larger than five carats -- diamond of this cut will generally bring the highest price.The emerald cut reveals larger planes on the stone, and therefore highlight the stone's innate clarity.Round
It depends on the stone, however, more expensive than carpet
Stone for stone, a diamond will cost more than a sapphire.
saphire
You can spend many millions of dollars US or many millions of pounds sterling for the most expensive diamond. The dilemma would be: how large a white or commonly coloured diamond stone could the intended wearer 'carry' on his/her hand. The other option is to commission a ring with an extremely rare diamond, such as a red or blue stone, which with few exceptions are smaller and more fitting for a ring. You'd buy the 'most expensive diamond' at an auction. Commercially, the largest stone you can buy today on Blue Nile is a 20 carat, round brilliant stone, for just under US$1 million. It measures nearly three-quarters of an inch in diameter (17+ mm), which is pretty large for a gemstone to wear on your hand. The 'most expensive' diamond ring hasn't been identified as yet, so no fixed price is available.
The most expensive rehab facility is the Beau Monde Facility costing $96,000 per month and has the potential to cost more depending on your needs. Other expensive rehabs are the Cirque Lodge, Passages Malibu, The Betty Ford Center, Harmony Place for Women and Stone Eagle Retreat.
Magnesium I guess