Story of Seasons: Friends of Mineral Town

Item	Location	Sell Price	Floor
Power Fruit	in the Earth	--	Floor 100
Scrap Ore	in Stones	1	Not at Floor 50, 100, 150 and below 200
Copper	in Stones	15	Any Floor
Silver	in Stones	20	Floor 3 and below
Gold	in Stones	25	Floor 6 and below
Mythril	in Stones	40	Floor 9 and below
Orichalcum	in Stones	50	Floor 10 and below
Adamantite	in Stones	50	Floor 10 and below
Mythic Ore	in Stones	20000	Floors: 60, 102, 123, 152, 155, 171, 190, 202, 222, 231-255
Goddess' Jewel	in Stones	--	Floors: 60, 102, 123, 152, 155, 171, 190, 202, 222
Mysterious Stoneslab	in the Earth	--	Floor 255
Statue of the goddess	in the Earth	--	Floor 220-249
Black Grass	in the Earth	10	Any Floor
Statue of a Sprite	in the Earth	--	Floor 160-189
Tool	Location		Floor
Teleport Stone	in Stones	--	Floor 255

Item	Location	Sell Price	Floor
Power Fruit	in the Earth	--	Floor 19
Scrap Ore	in Stones	1	Not at Floor 50, 100, 150 and below 200
Turquoise	in Stones	50	Not at Floor 50, 100, 150 and 200
Moonstone	in Stones	55	Floors that end in 8 (8, 18, 28, ...) and 255
Sandrose	in Stones	60	Floors that end in 9 (9, 19, 29, ...) and 255
Amethyst	in Stones	60	Not at Floor 50, 100, 150 and 200
Aquamarine	in Stones	60	Not at Floor 50, 100, 150 and 200
Agate	in Stones	62	Not at Floor 50, 100, 150 and 200
Jade	in Stones	62	Not at Floor 50, 100, 150 and 200
Flourite	in Stones	65	Not at Floor 50, 100, 150 and 200
Peridot	in Stones	68	Not at Floor 50, 100, 150 and 200
Topaz	in Stones	70	Not at Floor 50, 100, 150 and 200
Ruby	in Stones	75	Not at Floor 50, 100, 150 and 200
Sapphire	in Stones	75	Not at Floor 50, 100, 150 and 200
Garnet	in Stones	75	Not at Floor 50, 100, 150 and 200
Emerald	in Stones	80	Floors that end in 5 (5, 15, 25, ...) and 201-255
Diamond	in Stones	100	Floors: 10, 20, 30, 70, 90, 110, 130, 170, 190 and 201-255
Pink Diamond	in Stones	10000	Floors: 30, 70, 90, 110, 130, 170, 190, 210, 220, 230, 240 and 250-255
Alexandrite	in Stones	10000	Floors: 50, 100, 150, 200, 210, 220, 230, 240 and 250-255
Kappa Jewel	in Stones	--	Floors: 0, 40, 60, 80, 120, 140, 160, 180, 255
Statue of Kappa	in the Earth	--	Floor 102 and below
Black Grass	in the Earth	10	Any Floor

You have to upgrade all tools to mythril, before you can find the cursed ones in the mine.

Mines