Opal, known as the Jewel of Hope,
brings joy and happiness.
Her mysterious rainbow colors encourage your will and sensibility
and inspire love and romance to come true.
One of Opal's charms is her complex but beautiful play of color. Her light resembles the art of a master painter and every color has its own personality and expression. Her play of color is elegant and unique as if various colors such as blue, green, red and purple were flying simultaneously inside of the jewel. Her beautiful color is the product of silica (silicon dioxide) which reflects light among its particles.
Through Crescent Vert technology, thick homogeneous jewels can be created. Therefore, unlike natural opals, Created Opals can be cut in large sections.
Her internal water balance is very even, she is very hard, and her elegant color resembles “water opal.”
Items | Opal | Black Opal | |||
---|---|---|---|---|---|
Artificial Opal | Natural Opal | Artificial Opal | Natural Opal | ||
Chemical Characteristics | Composition | SiO2・nH2O | SiO2・nH2O | SiO2・nH2O | SiO2・nH2O |
X-ray Diffraction | Amorphous | Amorphous | Amorphous | Amorphous | |
Spectroscopic Analysis | Same as Natural Jewel | Particular Absorption of Opal | Same as Natural Jewel | Particular Absorption of Black Opal | |
Physical Characteristics | Crystal System | Amorphous | Amorphous | Amorphous | Amorphous |
Mohs Hardness | 5.0~6.5 | 5.5~6.5 | 5.0~6.5 | 5.5~6.5 | |
Specific Gravity | 1.90~2.23 | 1.90~2.20 | 1.95~2.20 | 1.98~2.20 | |
Optical Nature | Transparency | Transparent-Semitransparent | Transparent-Semitransparent | Semitransparent-Opaque | Semitransparent-Opaque |
Refractive Index | 1.440~1.465 | 1.440~1.465 | 1.440~1.465 | 1.435~1.455 | |
Ultraviolet Ray Examination | (Long Wavelength) Dark Blue Violet - Inert (Small Wavelength) Pale Blue - Inert |
(Long Wavelength) Strong Blue White - Inert (Small Wavelength) Pale Blue - Inert |
(Long Wavelength) Dark Blue Violet - Inert (Small Wavelength) Pale Blue - Inert |
(Long Wavelength) Strong Blue White - Inert (Small Wavelength) Pale Blue White - Inert |
|
Special Effects | Play of Color | Play of Color | Play of Color | Play of Color |