2 rocks id 2

[botrafis]

Hello,
can you help me identify these 2 rocks ?the first 3 image is the first one it is big and it weight about 10kg .

 

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[Steve1236]

First one kind of looks like brown onyx from the third photo, I'm not positive though, second specimen is probably quartz, does a steel knife scratch it?

 

[botrafis]

YES, it can be scratch by a knife and this is one more pic of the side

 

[Steve1236]

I'm thinking calcite now, heres an image someone made a heart shape with calcite sort of like your specimen.