It is unsure when glass building first started. Nevertheless, the Holy bible does talk about the rarity of glass by evaluating glass to gold. Glass was applied to create artificial gems as jewellery items. The glass gems could be coloured a colour that may not based in the organic world. Sometimes, costs of those glass gems had been more costly than actual gem stones because of the complicated procedure necessary to develop them.https://www.essex-conservatory.co.uk/
