Expensive drink bottle

$1.5m and you only get the bottle
Source:

• Link Reuters
  

http://www.mikimoto.com/

Sierra Leone is renowned for the quality of its diamonds and for the recovery of some of the most spectacularly large stones of very high value. The largest diamond, discovered in February 1972, was the 969.8 ct 'Star of Sierra Leone'. More recently, in 1996, two stones weighing 188 ct and 283 ct were recovered and sold. Annual output reached a peak of around 2 Mct in the late 1960s, with output declining thereafter. By 1997, output was seriously disrupted by RUF rebel activity, with most of the diamondiferous areas becoming off-limits. More...

Source:

• http://www.afdiamonds.com/

http://www.marksolomonjewellers.co.za/famous.html

Native Diamond

Province, Congo

This diamond cube is only slightly distorted, being ever so slightly rhombic, perhaps 100%
flattened, and having a single small bump due to another diamond crystal intergrown with the cube. The color is nearly colorless, having only a hint of yellow, and the rough, multi-faceted surface hides any transparency - the diamond looks translucent. But when examined with a loupe and under a bright light, it appears that the crystal's interior may be largely transparent - not only do some sparkles pass through it, but a rainbow is visible at certain angles from light entering the far side of the loupe.

Cartier

Mineral Gold
Sources:

• Cartier
• Link
• Link- Learn more about minerals use in creating beautiful jewelries.
• http://www.mineralatlas.com/mineral%20photos/D/dawsonitecp.htm