Comparative Hearts oddities A temperature of 1800 degrees

A temperature of 1800 degrees Celsius is required to instantaneously melt sand and form a fulgurite

heat-treated stainless steel blade and comfortable walnut handle: a duo worthy and capable of a lifetime of use

Produced since 1917

Citrine is just one of those minerals that should be in every collection

Comparative Hearts oddities A temperature of 1800 degreesFinally. An easy and convenient way to compare hearts! Hearts included: Fish, Amphibian, Reptile, bird, and mammal. It allows you to see in detail the structures of the heart and similarities and differences between different animal types. These specimens are set in transparent lucite resin. It's truly a unique and interesting way to study the inner workings of arguably the most important muscle of any living creature. Plus, they make a great