Blog / The yoni egg guide
Nephrite jade
Dense, cool, and surprisingly heavy for its size. There are reasons this is the stone the tradition settled on, and most of them are practical rather than mystical.
Nephrite is one of two distinct minerals sold as jade, the other being jadeite. They look similar and behave differently. Nephrite is the one used for yoni eggs, and it is the material behind most of the carved jade objects that survive from the ancient world.
Its defining quality is toughness. Nephrite is composed of densely interlocking fibrous crystals, which makes it remarkably resistant to breaking, considerably more so than many stones that are harder on paper. Hardness and toughness are different properties, and for something that will be handled wet, boiled regularly and occasionally dropped, toughness is the one that matters.
How it behaves in practice
Heavier than expected. That is the first thing almost every woman says when she picks one up, and it is the quality that makes nephrite such a good first stone.
Weight gives the pelvic floor something unmistakable to respond to. In the early weeks, when sensation is still faint and a woman is learning to feel anything at all in this region, an obvious presence is far more useful than a subtle one. The muscles have something to work against, and the body has something clear to report on.
It also holds temperature well. A jade egg warmed in the hands stays warm through a session, which sounds trivial and is not. A stone that stays at body temperature stops being a foreign object fairly quickly.
And it takes an exceptional polish. A well finished nephrite egg is glassy smooth with no seam detectable under a fingertip, and it stays that way through years of use.
Weigh it in your hand
When your egg arrives, before anything else, hold it in your palm with your eyes closed for a moment.
Notice the weight and the coolness and how long it takes to warm. That minute of simply meeting the object is a better beginning than any instruction, and it is the same attention the practice itself asks for.
Colour, and what it means
Nephrite ranges widely. Deep spinach green, pale grey green, creamy white, occasionally near black. Colour comes from iron content and varies by where the stone was quarried, with significant deposits in Russia, Canada, New Zealand and China.
Darker is not stronger and paler is not gentler. Colour is geology rather than character, and a woman should choose the one she finds beautiful, since she will be looking at it for years.
What matters more than colour is consistency of finish. Look at the surface in good light. Even colouring, or attractive natural variation, is fine. What you do not want is a stone that looks like the colour sits on the surface rather than running through it.
Recognising genuine nephrite
The word jade is used loosely, and several other materials get sold under it, including serpentine, various dyed stones and occasionally glass.
A few things help. Buy from a seller who states the material specifically as nephrite rather than simply as jade, and who will tell you where it came from. Expect a reasonable price, since genuine nephrite carved and polished properly is not a fifteen dollar item. And notice the weight, which is the giveaway most people can assess without any expertise. Nephrite is noticeably denser than most substitutes and feels wrong in the hand if it is not what it claims to be.
Also notice how it warms. Real nephrite takes a moment to reach body temperature and then holds it. Glass warms almost instantly.
Caring for a jade egg
Nephrite is the most forgiving of the common materials, which is another reason it suits a first stone.
Sterilize it in gently boiling water for three to five minutes before first use and after every session, then let it cool to room temperature on a clean cloth without hurrying it. Warm water and a plain unscented soap between sessions. Dry it fully and store it in a pouch.
The one thing nephrite genuinely dislikes is a sudden temperature change, so never run a hot stone under cold water. Yoni egg care covers the full routine.
A stone with a long working life
Nephrite is the material behind carved objects that have survived thousands of years, which tells you most of what you need to know about how it handles ordinary use. A jade egg treated with basic care will outlast the practice you buy it for.
Women who have practised for a decade often describe the stone itself as having changed, taking on a deeper polish from handling. Whether that is the stone or the hands is an open question, and either way it is one of the quieter pleasures of a long practice.
Who it suits
Women who want the practice to feel grounded and physical. Women beginning from a place of wanting to build something rather than soften something. Women who have given birth and want an unmistakable presence to work with. And anyone who has no strong pull in either direction, since nephrite is the sensible default and always has been.
If the pull you feel is toward tenderness rather than substance, rose quartz is the other traditional choice and a different kind of invitation. Choosing your first yoni egg sets the two side by side along with size and seller.