I don't have any African Blackwood in stock, we've never used or offered it as a top wood. I have a supplier with some on hand that I can procure for a custom order.  
 
We're going to be receiving some W-I-D-E Ebony in a couple of weeks. These boards will even be big enough for some bookmatch to center builds. I'll post some pictures when they arrive.

thank's. What about sound quality you know with melanoxylon versus cocobolo or ebony?

I don't have any first hand experience, so I can't comment with any authority. However, since it's a Dalbergia, I would assume it to be similarly toned to other Rosewoods. Its density may override that.
 
A sample piece of the Blackwood is on its way to me. We'll tap it and inspect it, so I'll let you know if I have any other predictions after I get my hands on it on what it will do to/for Alembic sound.

My sample piece is an enormous half log that arrived today:
 

 
It's very black. The piece is also quite wide, and will make a beautiful top laminate.  
 
Do I understand correctly from your April 18th picture that you want a satin or oil finish?

WAAAWWWW !!!! When I will get money, I will want finish as my SC deluxe, high gloss polyester with satin neck !
Thank's Mica

Wow that is some amazing wood,
Is there any visible figure?
Nice choice Pierre

why Alembic don't offer black choice as standard, and why lot of bass are made with coco bolo ?

I think the reason a lot of instruments are made with cocobolo is that a lot of people want cocobolo instruments.  I know I picked cocobolo as one of the woods on my Further because I liked it.  
 
Bill, tgo

Alembic's wood page touts the harmonic  complexity of CB as well, with both lows and highs.
Mike

but other woods have similar ability ?! Maple, mahogany..

My experience is the woods sound different. Maple is much brighter than mahogany. Mahogany has a more rounded tone than maple but not as round as walnut. I would say coco bolo has the characteristics of both mahogany and maple. That is a round but bright tone.
 
Keith

A coco-bolo, ebony laminated neck.
 
Interesting idea.

Yeah very interesting, can you imagine the price.....!!! and the weight I guess too.
 
Jazzyvee

I wouldn't want a full ebony neck. From my visits to Africa (on multiple occasions) I would bring home sculptures and ebony artifacts, back to the states. No doubt I love ebony very much and my house has many large and small ebony sculptures, but uses this wood as a neck without maple? Ebony is too brittle for me.  
 
Drop a nice piece of maple on the ground and it will hold, try this with ebony, it will break or chip off. The hardness, makes it great for sustaining but, as a durable wood, for a whole neck... not I.

who said without maple in the neck ?