Barrett
Ideal_Rock
- Joined
- May 26, 2009
- Messages
- 2,218
I picked up couple small pieces of "Rainbow Lattice Sunstone".
Fantastic stuff that is mined in Australia. I never heard about it before. GIA classified it as a new gem variety in 1989.
It's a feldspar that is 75% orthoclase and 25% albite.
Most of the material from the small mine in Northern Australia, is moonstone. It display's adularescence like moonstone.
...then it has inclusions of hematite in the stone, that forms in one layer of the feldspar and causes aventurescence, or Sunstone effect, which gives some an orange glow.
On top of that, it has ilmenite inclusions that form in many separate layers, but they only point in two directions.
This is where the term "lattice" comes from. The ilmenite oxidizes, and gets an iridescent sheen, or "rainbow effect"
Here is one of my pieces. Nothing to write home about. They are pretty expensive to buy in rough and cut form.
My hands are black from Manganese oxide due to handling crystals prior to the photo
Check out the good pieces for sale from the mine owners stock.
Check out this one!! Look at the geometric shapes the inclusions have. It looks manmade and not natural....crazy!!!




Fantastic stuff that is mined in Australia. I never heard about it before. GIA classified it as a new gem variety in 1989.
It's a feldspar that is 75% orthoclase and 25% albite.
Most of the material from the small mine in Northern Australia, is moonstone. It display's adularescence like moonstone.
...then it has inclusions of hematite in the stone, that forms in one layer of the feldspar and causes aventurescence, or Sunstone effect, which gives some an orange glow.
On top of that, it has ilmenite inclusions that form in many separate layers, but they only point in two directions.
This is where the term "lattice" comes from. The ilmenite oxidizes, and gets an iridescent sheen, or "rainbow effect"
Here is one of my pieces. Nothing to write home about. They are pretty expensive to buy in rough and cut form.
My hands are black from Manganese oxide due to handling crystals prior to the photo
Check out the good pieces for sale from the mine owners stock.
Check out this one!! Look at the geometric shapes the inclusions have. It looks manmade and not natural....crazy!!!



