Iron Pyrite

Glass Coloration Application

The most common use for Iron Pyrite today is the production of amber-coloured glass. It is the most reliable method of achieving this colour. Rubber, explosives, sulphur-impregnated compounds, and reductant industries also frequently use iron pyrite.

  • Creates a rich amber colour in glass
  • Provides excellent UV protection
  • Reduces furnace heating costs by naturally heating while colouring
  • Absorbs nearly all radiation in wavelengths shorter than 450nm



The amount of Iron Pyrite used will be approximately 2.5kgs per ton of sand.

Golden amber will contain about 0.15% Fe203. Dark amber will contain as much as 0.40% Fe203.

A standard beer bottle amber will contain 0.25% to 0.30% Fe203.

If sufficient iron is not available from the sand and pyrites, more can be added using iron silicate or red iron oxide. Using additional Iron Pyrite to increase the iron is not recommended, as this will add too much sulphide and create an unstable glass. African Pegmatite also supplies red iron oxide for this application.

Data Sheets

Iron Pyrite- General Application

Glass Grade                     

General Information

Amber glass is produced using iron, sulphur, and carbon. The sulphite concentration in the amber glass melt after fining is sufficient to produce ferric iron and sulphide, which is required for amber chromophore formation during the cooling process.

Amber is a reduced glass because of the relatively high level of carbon used. All commercial container glass formulations contain carbon, but most are the lesser, oxidized glasses.

Iron Pyrite was first added to glass to achieve an amber colour in the 18th century. It has been used for centuries in various applications, and remains in use for the production of sulphur dioxide and sulfuric acid. It has recently been used as a cathode material for lithium batteries.

This brassy yellow mineral has a bright, metallic lustre and a chemical composition of iron sulphide (FeS). It is the most common sulphide and is often called “Fool’s Gold.”


Choose the packaging and shipping arrangement that best suits your needs, from small packaging to bulk bags or custom sizes made just for you. We can accommodate virtually any size, from one metric ton to thousands.


We maintain competitive pricing in an effort to win and retain your business for as long as you need us. Our goal is to meet the needs of every customer, including those with special requests and demanding production schedules.

A 15-day general turnaround for manufacturing allows us to get your compounds to you as quickly as possible, so you can keep up with the demands of your business. Contact us to get in touch with a distributor in your area if you don’t have time to wait for materials.

We currently ship to 44 countries across the world and we’re happy to ship to yours, too. The dependable and professional logistics channels we have in place make it easy to offer great pricing and service regardless of your location.

African Pegmatite

With 48 years as professionals in mining and manufacturing, we have the insight, network, and experience to offer you the very best in quality, service, and efficiency. We’ve been accredited by the ISO 9001 since 2002 and have most recently met the 2015 standard.

We aim to provide the very best materials available to our customers, and become your one-stop shop for colourants, minerals, compounds, and more. Take a look at our general glass page to see all the other glass and supplementary products we have available.

If you’d like to become a distributor of African Pegmatite products, get in touch with us and we’ll customise an arrangement with you.