Rubbery Sources

Deep Amber
Fire Raising under "Work for Jasper and Frank" at Mahogany Hall provides 112 Deep Amber per action.

Trembling Amber
'Something warm' reward from 'Pick up the pieces', 'Sneak up and cut the straps on the baggage', 'The decoy' [1] Rare successes from 'Accept a damp gift' card [10] Get them from Corpsecage Island This classifies as a weapon in inventory, and can't be sold

Warm Amber
'Something warm' reward from 'Pick up the pieces', 'Sneak up and cut the straps on the baggage', 'The decoy' [1] Rare successes from 'Accept a damp gift' card [10] Get them from Corpsecage Island This classifies as a weapon in inventory, and can't be sold

Pulsating Amber
Rare successes when converting Things like Extraordinary implications, http://fallenlondon.wikia.com/wiki/Poke_about_among_the_ruins in Forgotten Quarter. Or buy from the Bazaar. 100 Echoes, sells for 62.50 Echoes

Fecund Amber
Get this in the Cave of Nadir.