Here
is your chance to facet rare GENUINE Hauynite. The material is
challenging due to small size and easy cleavage but the resulting gems
command high prices. Faceting experience is recommended. See faceting suggestions below.
This is a lot of 7.31 carat of faceting quality rare Hauynite from the
Eifel mountains in the Rhineland-Pfalz area of Germany, near Kelberg. The smallest stone of this lot weighs 0.16 ct, the largest weighs 0.49 ct.
Mined in1960, this material shows the most prized, magnificent, breathtaking ROYAL BLUE
color, with hints of Violet, and good transparency. A small amount of external matrix verifies the natural source of the specimens.
Please note the actual carat weights above; the pictures are enlargements.
The pictures show the actual stones you will receive: WYSIWIG -What You See Is What You Get - No substitutions
FREE shipping after the first lot on the same order. Delay payment and request invoice if purchasing more than one lot.
OR, I will refund you the extra postage if you have already paid.
Hauynite may be confused with Lazurite (Lapis Lazuli) or with Lazulite.
These have different characteristics that are easily identified
by knowledgeable gemological laboratories. They are less rare, due
to their availability in nature, and most are not transparent.
FACETING SUGGESTIONS:
Orient each stone before faceting. This is best done in water, OR dry by transparency over a light source. Look for the deepest color as you turn the stone.
Avoid thermal shock, use low temp. dopping wax and gradually heat wax and stone to same temp.
Facet with a fine or extra fine diamond lap at speeds below 100rpm. Wet lap with steady flow of water based coolant and promptly remove swarf. Best if the lap is worn.
Use whole surface of lap moving slowly and avoiding sudden jolts, as cleavage is possible.
Polish on alumina (UltraLap or similar) slow and with very little water coolant.
Excellent examples of the use of Hauynite in jewelry can be found in the Royal Regalia Museum in Munich, Germany.