These are lab created Czochralski pulled whiskey-colored sapphire facet rough. The pieces are labelled with their letters and weights and can be purchased individually.
This is a gorgeous golden-brown sapphire, likely grown for watch cases. This color is sometimes called 'Mekong Whiskey' because sapphires of this color are frequently found in Thailand and much loved in the local market there.
These stones were produced by Czochralski pulling, which is a more expensive method which results in crystals with the extreme chemical purity and structural perfection needed for mechanical and scientific applications.
