Even if in the past large spinels were available, nowadays, cut stones over ten carats of good color are very rare.
The most highly prized colors in spinel are intense red to purplish red, and «hot» pink with a tinge of orange.
The other colors, except for the light-violet and purple, tend to be too dark or too gray.
Generally, spinels are more flawless than the corundum gems, therefore visible cracks or flaws reduce considerably their value.
Many commercial or «native» cut spinel tend to be too shallow. This is due to the fact that the best crystals often occur in flattened octahedral and twinned stones.
Due to the absence of color zoning and dichroism in spinels, recutting them is not a difficult task and is often worth while.