Hello
look here this is an example of a piece that our friend and colleague @OBI WAN has made, it can help you.
Hello Grégoire Gam_1,
Responding to the challenge was tempting...
A proposal is provided as an attachment, for a finger with a diameter of 19 mm (in 2018 version). It essentially uses the volume functions of scanning and smoothing. With a helix direction on the left (and not a hexagon).
To adapt the dimensions to the hand of a delicate young girl 
, it will be enough to apply a scale factor.
The most difficult thing will then be to render the relief of the skin, if that is the intention.
Have a good weekend,
M. Blt
Nice result.
I did not understand the question of the hexagon in the initial question.
One way to solve the problem would be to use the winding function (cf. pj in SW19).
For those who can't file it: make a sketch of the desired shape, convert it into a spline, extrude a surface from this spline (it is important that the surface is not composite), wrap a triangle on this surface. The base of the triangle is the length to be wound (i.e. the total developed length of all the turns) and the height is the total height.
Of course, you can only make one coil and then repeat it, but the problem of the connection will arise, if the length of a coil is not whole (e.g., I have arcs of circles in my section so my development will never be exact).
Hello! You're not alone in struggling with this kind of complex shape, especially when it comes to giving organic movement to an object like a snake. If you're a little bit familiar with SolidWorks, you can already make a basic circle and then extrude a hexagonal shape to structure the beginning of the ring as you described.
For the snake's body, rather than doing it freehand, you could try creating a guide curve (Spline 3D) to follow a smooth path around the ring, and then use a sweep function with a circular or custom profile. This will allow you to keep a clean control over the shape while keeping a natural look.
I came across a similar project recently, maybe it can inspire you to see how you can integrate a snake design into a ring: example snake ring 
Good luck, can't wait to see how it goes!
Hello and welcome @Jean_Pormanov
Thank you for your constructive answer, alas, without wanting to break your hopes, the only message from the author being this one and that it dates back 4 years, there is little chance of seeing " what it will turn out to be ".
Apart from telling a funny joke to the snake to make him laugh, I don't see any other solution
