How can I find a gold ring lost in my bedroom, kitchen, or living room? I've already read this question, but it seems that many of the answers given there wouldn't apply to a search inside. It was lost only yesterday, and I've managed to narrow down the prospective areas to just those three rooms.
A gold ring is, in effect, a tuned circuit. Though a metal detector would find lumps of any type of metal, such as nails in the wall, a grid dip meter (GDM), used by electronics and radio amateurs, or "hams, could identify a closed loop of a good conductor such as gold alloy.
Calibrate the GDM by comparison with another ring of close to the same diameter, and then scan each room from floor to bureau-top. You'll need to be within 30 cm or so, so if the ring's under a bed, take off the mattress to check underneath.
Here are few methods to find the ring.
This might look a bit complicated but this method helped me to find few small objects on floor.
Keep a torch in your hand and place your head on the floor in such a way that one of your eyes will be just above floor ( your sight should be almost parallel to the floor ). Close your other eye which is far from floor.
Then, turn on the flash light and focus it towards where you are looking. Again, even the torch light should be almost parallel to floor to minimize the light on floor. This makes sure that ring will be kind of obstacle to light from torch. If you do it right, the light should fall only on the ring and not on floor.
Now, you can easily find the ring as the ring will be reflecting little light due to torch light falling on it.
The above method works well if done on low lit or dark areas (You can do it at night or by closing all curtains and doors to reduce light in the room, etc.).
If you can't find it on floor, and want to search on other places like bed, couch, etc., you can try vacuuming to suck up ring or blow air to make it fall on floor and then search on floor again. Off-course, you can do this first but I think quicker method must be done first and searching floor will be quicker than looking at other places.
I think there is only one way that is pretty sure to work. One by one, empty each room of every object. You'll need an empty room or a large clear area to stage removed objects.
An alternative to this, though less reliable is to picture each room as a grid. Work methodically through the grid, lifting, opening, prying, whatever to clear that grid. This is what search parties do when looking for lost sailors, children, etc.
This may seem very silly but call for it. There have been studies that show calling for an inanimate object makes it easier to find.
Other than that do a fingertip search, work from one end of the search surface and then work in a methodical way. For cupboards and draws, once searched put a postit note on it so you can see what you have and havent searched.
Search everywhere, no matter how unlikely it is to be there. If you have searched every place it could be then it must be in a place it cant be.
Search everywhere but there no matter where you lost it! Its your own decision brave one! (sorry for dramatic consequences, just for fun) If it is outside or when you are at the door and checked your ring, its lost then, find only near your house
(*don't go far elsewhere if it is lost long ago!*)