Museum Grade and Grading
Posted 07 September 2013 - 10:25 PM
Posted 08 September 2013 - 09:23 AM
Posted 08 September 2013 - 09:42 AM
Posted 08 September 2013 - 12:45 PM
Also, some meteorites are so common (like Campo del Cielo), that museums have no interest in them. I seriously doubt that any Campo or Nantan on the market would qualify as "museum quality".
It's a marketing and promotional term that most veteran dealers generally avoid.
The word "rare" is also quite arbitrary, but at least rarity can be measured by the amount of material available on the market.
For example, a given meteorite might have a massive TKW, which implies no rarity at all. However, if the vast majority of the material sits in institutions (and is unavailable to collectors), then it can be called "rare" without being misleading. The Antarctic meteorites are a great example. There are literally tons of them sitting in NASA vaults, but they are almost all unattainable. In this case, they are truly made of "unobtainium".
Posted 08 September 2013 - 04:58 PM