You are a jeweler? You should know the holes have absolutely no affect on shine. That's what the cut of the diamond is for. The hole is for stone placement and cutting proper distanced seats, as well as ensuring your points of the stone don't chip during setting (also if the metal is thin). As you notice not all setting have holes all the way through.

I have to agree. Brilliant cut diamonds reflect around 98% of the light. The holes mainly only help when setting, save a little bit of weight and make it easier to clean the jewelry later, since the cleaning liquids can completely wash around the stone.

@@itzfreakinjamie you are right on the setting part that is true im not saying otherwise i was talking about side portions if you set the stone a little higer or open small windows stones geets more light in it. the only part i dont agree is any light goes in effects the stone shining. i wish i could show you :D

I always explain to students the pros and cons of drilling through or not. In this case I wouldn’t as earrings tend to collect gunk and dirt!

@@itzfreakinjamie I affirm as well what you say. Well-cut stones should reflect most of the light back up so the holes don't matter in this regard.

You are so welcome!

It is easier to make the large thick jumprings with round wire, square wire would twist

I use a hart bur. I prefer using Hyfin polish compound

the cutters with the gold ring on the shank are called 1AU and are sold by the Busch company in Germany. These are probably a bit more expensive than other cutters, but if you don't overheat them, they stay sharp for a long time. In that respect it's worth it. You can actually get it internationally from all specialist dealers. The discs used for polishing are simple high-gloss rubber polishing discs. These are available in all possible versions from different manufacturers. You can actually buy everything there. These usually only differ slightly in terms of the quality of the polish and the level of wear.

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3mm round wire

@@jewellerytrainingsolutions9978 Thanks

Pin should be lasered = laser weld pin then file use to make it not visible?