SGG DIAMANT is a highly transparent extra clear glass, which has very little residual colour. It has a unique appearance and very specific optical qualities.

SGG DIAMANT is a float glass manufactured using the same process as SGG PLANICLEAR clear glass. Its very low iron oxide content gives it optimum clarity.

Where can you use it?

SGG DIAMANT is designed for applications where its unique appearance and optical qualities are of particular advantage such as: 

  • Display cabinets
  • Shelves
  • Glass furniture -(when laminated)
  • Table tops, bars and desk tops
  • Shower screens


Window Energy Ratings: the higher solar transmittance of SGG DIAMANT has more recently been valued for its use in IGUs, particularly in the context of Window Energy Ratings.


SGG DIAMANT is designed for numerous applications in which its unique transparent appearance and optical qualities are of particular advantage. It can be used for:

- Museums: for displaying and protecting exhibits with virtually no colour distortion
- Architecture and furniture: for its greater transparency and neutrality than that of SGG PLANICLEAR float glass.

Main applications

  • Interiors: partitions, doors, shower screens, display cases in museums, screens in banks.
  • Furniture: extra-thick glass table tops, shelves and countertops.
  • Shop windows and commercial frontages: Structural glass assemblies to emphasise the transparency and lightness of the façade.

Special applications

Interior design or decorating:

SGG DIAMANT is an excellent base glass when applying white or coloured decoration by screen print for use in partition walls, doors, shower cabinets and insulating glass. As a non-transparent cladding element, SGG DIAMANT can also be coated ( SGG EMALIT EVOLUTION).



SGG DIAMANT is particularly stunning in table tops, office desks or shop counters requiring thick glass with colourless edges.


Shop windows and display cabinets:

SGG DIAMANT can be used to produce a laminated safety glass ( SGG STADIP PROTECT) with very little colour difference - even in extreme thicknesses. SGG DIAMANT can also be used to produce anti-reflective safety glazing ( SGG VISION-LITE), which allows the objects to be displayed with the added security of laminated glass and viewed with reduced reflection.


Special applications:

Due to its higher level of UV transmittance compared to that of clear float glass, SGG DIAMANT is perfectly suited to applications requiring this property such as solar panels, photovoltaic, glass casing for medical measuring equipment and horticulture.


Window Energy Ratings:

The higher solar transmittance of SGG DIAMANT has more recently been valued for its use in IGUs, particularly in the context of Window Energy Ratings


SGG DIAMANT has the following advantages compared to ordinary clear float glass:

  • Excellent transparency: its light transmittance is greater than that of conventional glass, in particular when using extra thick substrates or assemblies
  • High neutrality in transmittance: optimised colour rendering and contrast. The colours of objects remain vivid and natural. This quality is very important in applications such as display cases in museums and jewellers etc.
  • Virtually colourless: when used in thick configurations (for example: SGG STADIP PROTECT laminated glass), the use of extra clear glass results in a virtually colourless product. The green tinge, inherent of ordinary clear float and more noticeable in greater thicknesses, is substantially reduced
  • Brightness and depth: without the green reflection along the edge of the glass, SGG DIAMANT produces a particularly bright, true colour when used in the manufacture of lacquered or enamelled glass (for example: SGG EMALIT EVOLUTION). This quality is especially evident when white lacquer or enamel is used.


SGG DIAMANT is available in a range of thicknesses, from 3 mm to 19 mm. SGG DIAMANT can be combined with many products from the Saint-Gobain range including different safety glasses to provide protection against injury in the event of breakage.


The table below gives the comparative light transmittance values for SGG DIAMANT and SGG PLANICLEAR. The thicker the glass, the greater the difference between extra clear glass and ordinary glass.

The spectrophotometric performance of SGG DIAMANT is given for single glazing, for all thicknesses.

The other properties (mechanical, acoustic) of SGG DIAMANT are identical to those of SGG PLANICLEAR float glass of the same thickness


Glass Substrate

(Solar Factor)

Light Transmittance

Light Reflectance


Shading Coefficient















The installation possibilities and recommendations for SGG DIAMANT glass are identical to those for SGG PLANICLEAR clear glass.


SGG DIAMANT extra clear float glass conforms to standard BS EN 572-2 and carries the relevant CE marking as required.


SGG DIAMANT can be used as the base product for a wide range of processed products:

  • Laminated Safety glass SGG STADIP or SGG STADIP PROTECT
  • SGG DIAMANT is extremely well suited for the production of very thick laminated safety glass because it provides a high level of transparency.
  • Monolithic toughened safety glass SGG SECURIT, heat strengthened glass SGG PLANIDUR, as well as high performance safety glass for structural glazing systems SGG SECURIPOINT. 
  • Enamelled glass SGG EMALIT EVOLUTION, or enamelled glass with very bright colours.
  • SGG DIAMANT can be used as the base glass for certain SGG COOL-LITE high performance solar control coatings

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