Studio Ring

Carnelian, sometimes spelled cornelian, is a red or reddish-brown variant of chalcedony. The word is derived from the Latin word meaning horn, in reference to the flesh color sometimes exhibited. It was used widely during Roman times 2,000 years before the present era to make signet or seal rings for imprinting a seal with wax on correspondence or other important documents. Hot wax does not stick to Carnelian.

Step 1 Here follows how to make a ring with a stone just like the one in the picture above.

      The ring is made by following these steps:
      １）Make the bezel for the stone
      ２）Create the ring
      ３）Solder the ring and the bezel
      ４）Set the stone
      ５）Finishing, polishing.

Step 2 Consider how much silver material you will need

The Formula to follow

  "L" is the length you need to make the ring
   the circumference is"d"
     "L"＝　π("d"+t)= S+tπ
     "t":thickness of the silver
     "S":European size

   For example, if you make a European size 52 ring with a 1.8 mm
     thick silver sheet,       Length of ring (L)＝52+1.8π=57.65
      When the width is 12mm, the silver weight will be about xxg.

      In addition, for the 0.5mm thick bezel, you will need silver as follows,
      Carnelian：diamiter(d):11.5mm　height:5mm
      length of bezel (l)＝π(d+t)=3.14(11.5+0.5)=37.68
      It will weigh yyg and the ring will need zzg silver totally.

      At the 'Studio Ring' we ask participants to pay for the material, JPY 90 per 1g.
    The material fee may change according to the market price.

Step 3 Let's make the bezel.

ⅰ)Heat the silver sheet with the burner to make it soft.

ⅱ)File one of the edges of the silver sheet so that the vertical line and the horizontal one, will cross each other at a right angle. Then cut the sheet in order to make the angle. Then cut the silver band according to the length you calculated in Step2.

ⅲ)Wrap the silver band around the mandrel and make a ring. Put the both ends of the silver band together and saw the joint so that the ends join perfectly.

      ⅳ)Solder the joint

ⅴ)Set the ring in a small mandrel and make it a circle. Check to see that the ring fits the stone.

Step ４　Lets' make a ring

Do the same as processes ⅰ), ⅱ),ⅲ),ⅳ),ⅴ) for the bezel.

After making the ring a circle putting on the mandrel, file the top line and the bottom.

Sandpaper the serface.

Put the texture using the saw and file.

Step ５　Let's set the stone.

Sandpaper or saw the bezel so that the bezel will fit the ring.
Solder the bezel and the ring.

Set the stone on the bezel with the chisel.

File the bezel. If you like shiny finishing, polish the ring using the buff.