Which gemstones are safe as yoni egg?

Not all gemstones are suitable for use as a Yoni egg, that is why I try to collect as much relevant information in this article as possible based on my knowledge.

There is an enormous variety of gemstones, so I will cannot name all species. I will discuss the most common ones, partly based on their classification (an overview can be found here wikipedia). For less common types I will mention what you can look out for when looking for information.
It is important to realize that, no matter how beautiful and although people attribute healing values to gemstones, they may contain, for example, heavy metals or substances that can be harmful to health.
These heavy metals can be released in an acidic environment of the vagina.

The vagina
The vagina is acidic, and can depend of age, and phase of the cycle have an acidity of 3.8 to 4.5. In relation to water (pH+/-7), this is fairly acidic. A healthy vagina contains microbiota; the most important bacteria of which are lactobacilli, which produce lactic acid and create a healthy vaginal environment. This acidity protects the vagina against harmful organisms such as Candida.
The vagina also consists of a lot of mucous membrane tissue. Heavy metals and some harmful substances are absorbed through the mucous membranes.

Home check
Especially if you do not know what material your egg is made of, you can do it at home Place the egg in kitchen vinegar (pH 2.4-3.4) for 24 hours. If nothing happens to your egg, then it probably won't happen in the vagina either. However, acetic acid (kitchen vinegar) differs from lactic acid, and although the reactions of minerals are often similar when exposed to these acids, it is more representative to test in lactic acid. Furthermore, many gemstones are sold under an incorrect name , and you may think you have a jade egg, but this is actually serpentine or calcite. 

Research into the crystal type
If it is crystal of which you are curious whether it is suitable for intimate use ends in -ite, or in this overview on Wikipedia the quartz falls, then I would like to warn you about a question mark. Exceptions are: obsidian, jade (nephrite and jadeite) and antegonite (serpentine).

Reactions and solubility
First of all, some stones are soluble in, or react with, water or an acidic environment. The slight acidity and moisture of the vagina means that you have to take this into account. Solubility or reactivity does not necessarily have to be a problem, because not all reactions or minerals are a health hazard. However, a gemstone is a natural product, and the exact composition is often unknown and can vary. With pure calcite (CaCO3), only calcium, oxygen and CO2 will probably be released, but calcite also occurs in different colors, which are caused by mineral additives/contaminants. Some mineral additives are harmful to health. Lead, for example, can be present in calcite and is poisonous, but does not give calcsite a recognizable color and can therefore be present in calcite invisible to the eye. This makes some gemstones potentially dangerous.

Dyed crystals
In addition, I would advise never to use dyed crystals, because some coloring agents are toxic or contain heavy metals. It is difficult for a layman to determine whether your crystal is painted. Often the colors of painted crystals are unnaturally bright in color, and you can already instinctively determine that something is not right.
Chalcedony (particularly Agate), Aventurine, Quartz, and Howlite are often dyed.
As well as possible In striking colours, the dyeing of Quartz is often recognizable because the paint follows the veins of the material and therefore produces an unnatural discoloration (this is a bit more difficult to recognize for non-experts).
You can possibly perform 2 tests: 1. dip a cotton swab in acetone, rub it thoroughly over the stone, and see if any color comes off.  2. the same with white spirit (make sure the white spirit has completely evaporated after this test & removed before using the stone intimately).

Most silicates (including quartz) contain minerals (some of which are dangerous) enclosed and bonded by Silicon (glass/crystal). This makes these types of stone often harmless in processed form, even if they contain dangerous minerals.

Quartz
Most quartz is suitable as a yoni egg, because the glassy structure is dense and does not dissolve or react with water. Make sure that there are no cracks or voids in the material. Some quartz can be dyed, so you have to pay extra attention to this.
These are some comments:
– Rock Crystal, Rose Quartz, Amethyst and Citrine can have a crack-like surface,cracks and fissures can harbor bacteria, fungi, or food sources for them. Therefore, make sure that your egg is of sufficient quality. I check the eggs that I sell in my webshop for this.
– PLEASE NOTE: Chalcedony (including Agate) is often chemically dyed, and chalcedony dyed red is often sold as Carnelian. Make sure you buy from a reliable supplier.
– PLEASE NOTE:Aventurine is sometimes chemically dyed, blue aventurine in particular is very rare and is usually chemically colored.
–Tiger Eye, Tiger Iron & Falcon's eye, these stones contain embedded asbestos fibers. This is not harmful to your health, because the fibers are enclosed in the glass, but these stones may be harmful to the person who worked the stone, or to the environment, depending on the guidelines surrounding mining and processing the stones.
– DO NOT USE: Tiger Iron In addition to quartz, it also contains Hematite, which rusts in response to the vagina.
In principle, you can safely use the following gemstones:
< strong>Amathist, Aventurine, Rock Crystal, Chalcedony (Agate, Carnelian, Chrysoprase, Heliotrope, Onix, Sardar, Sardonyx), Citrine, Iron Quartz (Lemonite/ Golden healer), Jasper, Smoky Quartz (Morion), Rose Quartz, Tiger's Eye and Falcon's Eye.

Obsidian
Obsidian is not a gemstone (or crystal), but volcanic glass. You can use this safely and it is not classified as quartz because the structure of the SIO2 is glassy and not crystalline.

If you want to use a different Nesosilicate gemstone type, you must pay particular attention to whether the material is properly closed. is, and is not a composition with non-nesosilicate materials.

Feldspars
For example Labradorite, white Labradorite (rainbow moonstone), or&nbsp ;Orthoclase/Oligoclase (moonstone), are not soluble in water or a slightly acidic environment. However, feldspars can be a bit flaky in texture, and you don't want any glass flakes to come loose during use. Inspect your stone carefully, if it is a Feldspar-like one, for parts that may be loose, or cracks that could harbor bacteria, fungi, or food sources for them.
For now, my advice is: don't use it; I hope to update my website soon.

Jades
There are two types of gemstones called jade. Nephrite (falls under the Amphiboles) and Jadeite (Pyroxenes), both are Insosilicates. Both types are very suitable as a yoni egg. Nephrite jade is traditionally used as a yoni egg.

Serpentines NOTE – WARNING GREEN SERPENTINE BELOW LEFT
There are different types of serpentine. The most common species is Antigorite, all yoni eggs that I showed to the gemologist were of this species. Below you can see the different variants that I have seen:

The light green and transparent green antigorite, especially the stones that are (mainly) transparent, can be used safely and do not react with acid. The grass-green variant on the left reacts with lactic acid, releasing dangerous minerals. In the light green variant, the whiter parts can become affected by lactic acid. I have not measured any hazardous substances, but I advise against this, because you never know exactly what is released. If you have an egg of this species, place it in vinegar or lactic acid for 24 hours, or order a test set. And look what happens. Transparent eggs will have little or no reaction with the acid, so not in the vagina. You can use these eggs safely. If your egg is significantly affected, do not use it!
Although I have sold a lot of light green serpentine eggs over the years, I will stop purchasing them and this product will disappear from my range.
I currently treat all eggs before sale with lactic acid to prevent any to investigate and rule out damage.

Oxides, Sulfides, Sulphates, Phosphates, Carbonates, Borates, Tungstates and Molydates
If your type of stone falls into the above gemstone groups, then I would definitely continue do research before using it internally. It is very possible that the type of stone reacts or dissolves in or reacts with water and/or a slightly acidic environment. This may release harmful substances.

WARNING LIST
Below you will find a provisional warning list (which I have taken from another source).

Anhydrite (Angelite) – (contains lead), is soluble in an acidic environment. DO NOT USE!
Apatite – Very toxic, can react dangerously when taken internally and dissolves in an acidic environment. DO NOT USE!
Aquamarine (Beryl) – No known risks
Calcite – dissolves in an acidic environment, but has no known hazardous effects, but contains trace minerals such as possibly lead . DO NOT USE!
Chalcopyrite – contains sulphate
Chrysocolla – Contains (a lot of) copper and falls apart in an acidic environment
Fluorite (CaF2) – Dissolves very slightly and slowly in water (Contains fluorine and more harmful chemicals: Ce (Cerium non-toxic) Yttrium (mildly toxic), tin, silver, lead (heavily toxic), zinc, copper (toxic in certain quantities)). More information follows. DO NOT USE!
Galena (PsS) – Contains a lot of lead DO NOT USE!
Howlite – Dissolves in an acidic environment and may contain hazardous trace elements. DO NOT USE!
Labradorite – contains aluminum (non-toxic) (Does not dissolve in water, but somewhat in acid, risks are unknown)
Lapis Lazuli – contains pyrite , which is dangerous if swallowed because it contains arsenic. When processed, iron (hydr)oxides are formed, which also releases sulfuric acid, which can react with other minerals. Lapis Lazuli also contains Lazulite, Calcite (white) and Sodalite. DO NOT HOLD IT FOR A LONG TIME WHEN USING (MAX 1 HOUR)!
Lazurite – Soluble in acid – contains sulphate (non-toxic)
Malachite (Cu₂CO_{3</ sub>(OH)2) – contains copper carbonate, which can be released when exposed to water, which is very harmful to health. DO NOT USE!
Moonstone (Orthoclase) – Probably Safe
Orpiment – contains arsenic (very toxic) DO NOT USE!
Rhodochrosite (MnCO3) – Difficult to dissolve in acids, and contains a lot of Manganese. (Could also contain lead)
Rhodonite ((Mn²⁺,Fe²⁺,Mg,Ca)SiO3 ) – dissolves an extremely small amount in a very acidic environment and contains manganese (which is poisonous). I recommend placing an egg in acid and seeing if it is not affected.
Selenite – It is very soft and flaky, breaks down easily and does not dissolve in water CaSO4 S=sulfur very toxic, can irritate the skin DO NOT USE!
Sodalite – Dissolves in acid – no known health risks (Contains Aluminum?) DO NOT USE!
Oligoclase/ Sunstone – Contains Aluminum – Likely Safe
Turquoise (CuAl6(PO4 )4(OH)8·4H2O) – Toxic, contains copper, and is not suitable for use in combination with water. DO NOT USE!}