Moldavite holds an amazing quality that can help heighten the hearing to a level where the actual frequency from other crystals and minerals can be heard just by being close to them.
To start the process off, Moldavite would need to be held near the left ear and the chosen crystal or mineral to the right ear, and a simple command, whether using the power of the mind or vocally, would need to given to the Moldavite that you would like to hear your chosen crystal or mineral sing. 
The reason for asking to hear the singing rather than speaking is because the frequency in sound that comes from crystals and minerals is just that, and at first it’s usually going to be heard as a high pitched ringing, tinnitus type sound in the ear, which will fade when the crystal or mineral is moved away.
Also the reason for listening with the right ear, is because this side of hearing is most commonly reported as being used when hearing sound associated with the psychic sense.
Once this process with the Moldavite becomes well known or even mastered, the hearing can be 'trained' to work on command itself to hear the frequency levels from different crystals and minerals.
This is a great way to tell if certain stones match or not, the frequency sound should be in harmony, like that of a well trained choir, where as if the stones energies are not matching well, the frequency of sound is heard as a mixture of high and low tones that weigh each out other as they clash. 
It is beneficial to use this process with the Moldavite in a weekly meditation, this will help keep the heightened hearing tuned well. 
After some time, when the keeper becomes more adjusted to this on/off command of hearing, Moldavite will help to stimulate the clairaudient sense also, but this will only take place if this particular sense is set to be opened for the keepers spiritual path in life. 

Follow the link to the web site

http://www.ksccrystals.com/rough-moldavite-7-1413-p.asp
  

Sikhote-Alin iron meteorite

On February 12, 1947 at 10:30 AM, the largest meteorite shower in human history was witnessed by thousands of people, at distances up to 300 km away from the impact site near Luchegorsk, Siberia. The fireball was brighter than the Sun and cast shadows in broad daylight. During the meteoroid's descent through the atmosphere, it gradually melted and broke apart to form a cluster of smaller meteoroids surrounding the largest meteoroid or "main mass". The fireball effect was created by the melting and ablating of meteoritic metal, forming a corona of molten material around the cluster. At approximately 5.6 km altitude, thermal instability in the superheated nickel-iron main mass caused a gigantic explosion, equivalent to that of a nuclear weapon, which blew it apart into thousands of chunks of red-hot shrapnel, some of which weighed hundreds of kilograms. People who lived within 80 km of the impact site saw the sky burst into flames followed by thousands of smokey tendrils tipped with fire as the shrapnel hurtled away from the blast and fell to the ground. During the explosion and impact event, the clustered meteoroids would have impacted the ground as complete individuals while the main mass was torn apart into thousands of sharp metal shrapnel and impacted the ground as twisted and torn explosion fragments. Luckily, the impact area was devoid of human life or there would've been an incredible human tragedy. Most of the Sikhote-Alin meteoroid was blown into shrapnel, but a small percentage of the total impacted the Earth as complete individuals bearing the trademark regmaglypts, or 'thumbprints", that characterize and help to identify meteorites. Regmaglypts form as the surface metal melts away due to the heat generated by atmospheric friction: As the droplets of metal separate from the surface, a small pit area of lower pressure is created that channels and concentrates hot gases into vortices which act like mini blow-torches aimed along the edges of the pit. Then, a positive feedback loop is created whereby, the deeper the pit, the quicker the melting along the inside walls of the pit, causing the regmaglypts to become more and more pronounced with further heating and melting. These regmaglypted individuals are the rarest and most sought after of all iron meteorites, and Sikhote-Alin has produced absolutely the finest, most aesthetic, regmaglypted meteorites in the world. Sikhote-Alin has the added distinction of producing the best fusion-crusted iron meteorites in the world. Fusion crust forms over the entire surface of a meteorite as some of the melted material cools as it flows away from the melt area like a chocolate shell forms on a dipped ice cream cone. Fusion crust is very rare on iron meteorites because they tend to oxidize easily and rust, destroying the fusion crust. 

Follow the link to see the item on the web site

http://www.ksccrystals.com/meteorite-1079-p.asp