Fluorescent amber from Sarawak, Borneo, these mineral and fossil specimens are found in the ancient coal measures around Indonesia, a variation known as glessite, this amber is from the Tertiary period, 15 to 25 million years old and is much harder than Baltic amber. It has a distinct brown colour but once under shortwave UV lighting, emits a pale green/yellow colour with some inclusions of blue. Available in one size only, 1.5 x 1.5″, supplied in a card tray with a label.