In jewels with natural gemstones like aquamarines, rubies, sapphires, topazes, tourmalines, amethysts, etc. the priority is the stone; not all of them are equally hard, or have the same resistance to scratching.

Soft stones such as lapis lazuli, turquoises, cornaline, opals, amber or chalcedonies scratch very easily so do not be surprised if they lose their shine with use. One very important part of the fragility of a stone is its cut, which should preferably be cabochon (half ball), and the exposure to friction due to the way this cut is set.

Being transparent, semi-hard stones such as quartzes (amethyst, citrine, fumé, prasiolite), olivines or tourmalines are usually cut into more classic shapes (brilliant, princess, oval, octagonal, etc.) and are more protected by the mount. Even so, one should still be wary of the abrasions they may suffer as a result of scrapes or knocks.

In jewels with hard stones such as rubies, sapphires, aquamarines or garnets, the fear of them being scratched with use or broken by an impact is always much less.
Nevertheless, the cleaning recommendations are the same basic ones for removing grease accumulated by usage but the more fragile the stone is the more advisable it is to purchase immersion products to remove oxidation and restore its original sparkle. If the stone is hard, we can clean it at home with very hot water and degreasing soap, soaking it for around 10 minutes, brushing with a very soft toothbrush to remove the last remnants of grease and rinsing with plenty of cold water. Afterwards dry with a linen or cotton cloth and finally, rub with a microfiber chamois cloth specifically designed for jewels with stones.