riddle - Hope You're Happy in This!

Inspired by The Riddle - I Could be Used in Many Ways by Conifers :D

My whole is usually shown in a tree.

About my $1^{st}$ and $2^{nd}$ parts is fond.
About my $2^{nd}$ and $3^{rd}$ parts, PNGs.
About my $3^{rd}$ and $4^{th}$ parts, opal.
About my $4^{th}$ and $5^{th}$ parts, moot.
Right before my $5^{th}$ and $6^{th}$ parts is a yard.

Answer

I think the answer might be

Relationship

Divided into six parts as follows

Re, la, ti, on, sh, ip

My whole is usually shown in a tree.

Family tree

About my 1st and 2nd parts is fond.

Foreland - a landform projecting into the sea

About my 2nd and 3rd parts, PNGs.

Platings - surface coverings in which a metal is deposited on a conductive surface.

About my 3rd and 4th parts, opal.

Optional

About my 4th and 5th parts, moot.

Moonshot - home run that travels a great distance vertically

Right before my 5th and 6th parts is a yard.

Shipyard - my thinking is that this clue is clued the wrong way round as it fits so perfectly otherwise.

Note

I have leaned heavily on the wordplay aspect where "about" is a wordplay clue.