Olive-green glass compositions

Opacified enamel for direct-on enamelling on unpickled steel pla

Opal glass compositions

Opal glass exhibiting a creamy-white tint

Opal glasses having an apatite opacifying phase

Opal glasses having an apatite opacifying phase

Opalescent glass

Opaque quartz glass product and method of manufacture

Opaque silica composition

Ophthalmic and optical glass

Ophthalmic and optical glasses

Ophthalmic glass of high refractive index

Ophthalmic glasses with high indices of refraction

Optical amplifier glass

Optical amplifying glass

Optical amplifying glass and method for its production

Optical and ophthalmic glass with refractive indices greater tha

Optical and ophthalmic glass with refractive indices greater tha

Optical and ophthalmic glass with refractive indices nd>1.58,

Optical and ophthalmic glasses