basket Your basket >
>
Your wishlist >
reset search

We offer layaway, spread payments on the piece of your dreams. Ask us for details.
Free insured shipping on all orders !!!

jewelry glossary

Antique jewelry glossary

Welcome to our extensive antique jewelry glossary with around 1,500 jewelry related entries.If you feel you are missing an explanation, feel free to let us know and we will add it.

A - B - C - D - E - F - G - H - I - J - K - L - M - N - O - P - Q - R - S - T - U - V - W - X - Y - Z     all

Precious opal

One of the two principal varieties of opal (as contrasted with common opal) which exhibits iridescence due to a play of spectral colours when light falls upon its surface. It includes a regular structure of minute, closely set internal spheres of similar size but there may be variations of the sphere size between different stones which regulate the wave lengths of the reflected light, causing varicoloured interference of light. When heated, it loses water, turns dull, and loses iridescence. Most examples are somewhat transparent with backgrounds that are milky or varicoloured.

The colour play shows in different patterns which establish various varieties, including principally the black opal, fire opal, white opal, and water opal, and also flame opal, flash opal, harlequin opal, pinpoint opal, and hyalite. The class is sometimes called 'noble opal'.

From: An Illustrated Dictionary of Jewelry, autor: Harold Newman, publishers: Thames and Hudson

Jewelry Glossary

Missing an explanation?
click here to request one

Jewelry Theme Search
Antique Jewelry Lecture
Adin Wallpapers    Help    Shipping Policy    Dealer Terms    Special Requests    Follow us on :   Twitter   Facebook   Google+   Instagram   Links
Home  |   Site Security  |   Track your Order   |   Return Policy   |   Contact Us  |   Antwerp  |   Terms And Conditions   |   Site Map  |   Blog  |   Testimonials  |   In Memoriam