Common 'effects' materials in 'normal' car paint are:
Metallic, basically tiny pieces of aluminium in various sizes. Looks shiny & sparkly.
Mica, shiny bits which look like short lengths of 'U' shape, something like guttering. Various sizes & colours. Often referred to a pearlescent. Colour will vary according to the angle you're looking at it from.
Xirallic, this from wikipedia:
"Xirallic is an
alumina effect pigment pigment made of aluminum oxide platelets covered with titanium oxide that shows a strong glitter effect with a distinct shimmering behavior."
Not unusual in some car colour formulations to have combinations of different Mica colours, different sized metallic bits, combinations of both & sometimes a bit of xirallic thrown in for good measure.
I expect your colour includes metallic & mica.
Applied as a base coat - the colour - with clearcoat over.
More here:
Pearl vs Metallic vs Non Metallic Car Paint - Everything to Know (autobodytoolmart.com)
(I & some bodyshops won't touch matte finishes at all)
Might be an idea to take the car to a good motor factor in your area that sells car paint & see if they can do an eye match - usually more accurate than a spectrophotowotsit.
I have eyematches done - mostly caravan colours as I do body repairs for a local caravan company but the last car colour they did for me was my Cypress Green RRC. I do have the code for it but it had been painted before so best result will be an eyematch.
I give them a piece of the caravan/car. They mix, spray out a test card & send it to me for approval. If I'm happy with it they go ahead, if not they try again. If it doesn't work out then all I pay is the matching charge which is around £20.
Paint cost will vary depending what's in it.