These are Shiva Lingams in small size each with unique patterning. Also spelled as shiva linghams, they will fit large spirals if you want to wear them or a hemp necklace.
I noticed that people prefer to pick their own egg as they are very personal pieces. So here are four that felt they were ready to call in their forever friends via the web buyers.
This size are often bought for their balancing and grounding energies. It is also used to help ground a small but important project you are working on. You may find you want two eggs as others have noticed this requirement.
This is about the healing properties of the shape. We will intuit the right shiva lingam egg for your needs.