≪Product Details≫
・One grain size: around 4.5-5 x 4.5-5mm ・Hole size: estimated around 0.4mm ・Color: Milky white, transparent, brown, yellow, white ground color. Common opal with no play of color.
・Inner scratches/tip chipping: almost no chipping. There are parts with brownish mother rock and scratches on the surface here and there.
≪Product description≫
Fire opal multicolor round cut beads. Although it is a difficult stone to process, it has been carefully and finely cut into a high-quality raw stone to create a very beautiful finish.
It is weak against moisture, so please be careful of ultrasonic cleaning and sweat.
Opal has a light specific gravity, so it is light and comfortable to wear even if you wear a lot.
Mohs hardness 5 1/2 - 6 1/2
Specific Gravity 1.98-2.50
Refractive index 1.37-1.52 (single refraction)
Crystal system Amorphous.
Fire opal is created when hot water containing silicic acid seeps into the voids of volcanic lava. As the name suggests, it is a fiery orange color, and various colors such as red, orange, and yellow appear to sparkle on the transparent substrate.
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# fire opal
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