Up for sale is a rare example of a pure lab-grown crystal of Hafnium, using the van Arkel-de Boer process. This was developed in 1925 and has been a source of very pure Hafnium, Titanium and Zirconium. This beautiful and heavy piece is more than eight ounces (251.78 grams) and is 38 mm long by 26 mm wide. What's particularly beautiful is the bright rainbow sheen as seen on the different surfaces.
This was very hard to catch by my camera. The price of this piece reflects its rarity. You're just purchasing the one in the ad title.
Shaping processes in crystal growth. And here's a response from an elements collection winner : Hi! I just bought the most amazing periodic element collection from you!!
It is a gift for my son. The item "Best piece of pure 99.9% Hafnium ever! HUGE 251.78g rainbow-colored lab crystal" is in sale since Sunday, June 23, 2019.
This item is in the category "Collectibles\Rocks, Fossils & Minerals\Crystals & Mineral Specimens\Precious Metals". The seller is "hudaho" and is located in Ridgefield, Washington. This item can be shipped worldwide.