The present invention provides a microcrystalline glass product. The microcrystalline glass product includes the following components in percentage by weight: SiO.sub.2: 45-70%; Al.sub.2O.sub.3: 8-18%; Li.sub.2O: 10-25%; ZrO.sub.2: 5-15%; P.sub.2O.sub.5: 2-10%; and Y.sub.2O.sub.3: greater than 0 but less than or equal to 8%. Through reasonable component design, the microcrystalline glass and the microcrystalline glass product obtained in the present invention have excellent mechanical and optical properties and are suitable for electronic devices or display devices.

The present invention provides a microcrystalline glass product. The microcrystalline glass product includes the following components in percentage by weight: SiO.sub.2: 45-70%; Al.sub.2O.sub.3: 8-18%; Li.sub.2O: 10-25%; ZrO.sub.2: 5-15%; P.sub.2O.sub.5: 2-10%; and Y.sub.2O.sub.3: greater than 0 but less than or equal to 8%. Through reasonable component design, the microcrystalline glass and the microcrystalline glass product obtained in the present invention have excellent mechanical and optical properties and are suitable for electronic devices or display devices.

A method of fining low-density submerged combustion glass is disclosed. The method involves introducing unfined molten glass produced in a submerged combustion melter into a fining chamber of a downstream fining tank. Additionally, additive particles are also introduced into the fining chamber to release one or more fining agents into the molten glass bath contained in the fining chamber to accelerate the removal of bubbles from the molten glass bath. The fining of the molten glass bath as assisted by the one or more fining agents allows for fined glass to be discharged from the fining tank that has fewer bubbles and a greater density than that of the unfined molten glass introduced into the fining tank. Additive particles that include a physical mixture of a glass reactant material and the fining agent(s) are also disclosed.

A fitout article or article of equipment for a kitchen or laboratory is provided. The article has a lighting and separating element. The separating element in a region of the lighting element has light transmittance of at least 0.1% and less than 12%. The lighting element in the interior emits light that passes through the separating element and to the exterior. The separating element has a glass or glass-ceramic substrate having a CTE of −6 to 6 ppm/K and has a colour locus in the CIELAB colour space with the coordinates L* of 20 to 40, a* of −6 to 6 and b* of −6 to 6. D65 standard illuminant light, after passing through the separating element, is within a white region W1 determined in the chromaticity diagram CIExyY−2° by the following coordinates: TABLE-US-00001 White region W1 x y 0.27 0.21 0.22 0.25 0.32 0.37 0.45 0.45 0.47 0.34 0.36  0.29.

A fitout article or article of equipment for a kitchen or laboratory is provided. The article has a lighting and separating element. The separating element in a region of the lighting element has light transmittance of at least 0.1% and less than 12%. The lighting element in the interior emits light that passes through the separating element and to the exterior. The separating element has a glass or glass-ceramic substrate having a CTE of −6 to 6 ppm/K and has a colour locus in the CIELAB colour space with the coordinates L* of 20 to 40, a* of −6 to 6 and b* of −6 to 6. D65 standard illuminant light, after passing through the separating element, is within a white region W1 determined in the chromaticity diagram CIExyY−2° by the following coordinates: TABLE-US-00001 White region W1 x y 0.27 0.21 0.22 0.25 0.32 0.37 0.45 0.45 0.47 0.34 0.36  0.29.

A glass-ceramic, includes a silicate-containing glass comprising a first portion and a second portion. A plurality of crystalline precipitates comprising at least one of W and Mo. The crystalline precipitates are distributed within at least one of the first and second portions of the silicate-containing glass. The glass-ceramic comprises a difference in absorbance between the first and second portions of 0.04 optical density (OD)/mm or greater over a wavelength range of from 400 nm to 1500 nm.

A decorative glass article contains: in mol %, 10% to 70% of La.sub.2O.sub.3, 10% to 90% of Nb.sub.2O.sub.5, 0% to 40% of B.sub.2O.sub.3, and 0% to 50% of TiO.sub.2, wherein a refractive index is 2.0 or more and an Abbe number is 50 or less.

A decorative glass article contains: in mol %, 10% to 70% of La.sub.2O.sub.3, 10% to 90% of Nb.sub.2O.sub.5, 0% to 40% of B.sub.2O.sub.3, and 0% to 50% of TiO.sub.2, wherein a refractive index is 2.0 or more and an Abbe number is 50 or less.

A glass frit for forming a black enamel coating includes Si at 6.5 mol % to 6.9 mol %, B at 9.0 mol % to 9.3 mol %, Bi at 13.0 mol % to 13.4 mol %, Zn at 6.0 mol % to 6.3 mol %, and Al at 1.5 mol % to 2.0 mol %, and Co, Ni, and Fe, wherein a total amount of Co, Ni, and Fe is 2.9 mol % to 3.5 mol % of the glass frit in a molar ratio.

A glass frit for forming a black enamel coating includes Si at 6.5 mol % to 6.9 mol %, B at 9.0 mol % to 9.3 mol %, Bi at 13.0 mol % to 13.4 mol %, Zn at 6.0 mol % to 6.3 mol %, and Al at 1.5 mol % to 2.0 mol %, and Co, Ni, and Fe, wherein a total amount of Co, Ni, and Fe is 2.9 mol % to 3.5 mol % of the glass frit in a molar ratio.