Fun but Frustrating

I like it but something should be done about difficulty in getting green stones. The aggravation of sending 3 balloons for green stone trips (6hrs), and getting 3 blue stones made me so frustrated I let the divers light go cause I couldnt progress without green stones for mining. I thought I had enough greens but the jump in needed stones was too much. Maybe an alternative way to make stones,3 blue = 2 green?

Clypperdude about Sunken Secrets, v1.7.1