Yes, you can for activation for a short moment, but it is not recommended to borrow it. It is your personal and sacred tool. It is better that the other person put the jewel in her hand or in her heart to feel it and have the experience or not...

No, at the beginning you can feel the energy quite intense until the information penetrates your field. After that it is normal to not feel so strong or to not feel it, as you have integrated the first shot of the transmission. However, depending your path, your level, your need and the way you work with the jewel, you can activate more transmissions and use it with intentions which will make you feel again the energy or a different energy. When the energy is uncomfortable at the beggining because it is cleansing and purging what is not aligned, and you can go through, the energy will change and will diminish and stop until to activate after the powers and the nice things... It takes different times for each persons (days or months). The jewel can challenge us if we need it. It´s an higher intelligence working in anyway and in everyway for our highest good and evolution and is guiding us. If the energy is too intense, you can wear it few moments at the beginning until you can hold more. Avoid to mix too many differents energies at the beginning (different rings with different necklaces for example, proceed by steps until you integrate them in your auric field). Be free from projections of people that are not initiated and cannot see the energy or understand the power of the Divine Feminine energy and of some deities. The talisman is always from your side and is your personal tool and portal that you have to learn to pilot and master to get the highest gifts. They are not simple accessories, they are sacred tools.

Yes, you can. It is your own portal of transmission and connection.

You can put an intention to work with the jewel, as to protect, to activate you, to guide you, to reveal you, to initiate you, to bring you love, etc.. but you cannot encode it for an opposite purpose than to be a personal portal of sacred feminine transmission from the Goddess. It comes with its own technology from creation.

No, you don´t need to clean it. The jewel has not been used or encoded with energy projection, reiki, any ceremony or any intention. It comes directly from the studio and the portal will open for you in any way. The portal let flow the energies, you don´t need to do any special energetic cleansing or to charge it. You just need to take care of it according the care instructions. Be aware that salty water can damage your metal, incense can dirt your jewel, and the sun can damage the ruby.