Blue Calcite (Blue Onyx) Hearts

$20.00 $20.00

3 in stock


I had been on a hunt for Blue Calcite hearts for over a year and couldn’t find anyone who had ever seen them. Then I discovered that a small handful of crystal suppliers call it Blue Onyx. That’s the confusion that happens when we use nicknames for minerals that already have a proper name in geology. But fear not, my mystical friends. It’s a common practice and all that’s required is a little education. You may have seen “Green Onyx” in the form of spheres and mortar and pestles in stores such as Home Goods and TJ Maxx. They’re also Calcite! True Onyx is white and/or black.

Now here’s where it’s crucial to understand what you’re buying. Blue Calcite and Onyx are quite different when it comes to hardness. Onyx is 6.5-7 on the MOHS (measure of hardness scale). Whereas, Calcite is a 3! See the full list of crystals and where they measure up here. If you buy “Blue Onyx” not knowing it’s really Blue Calcite and you don’t take extra care to be gentle, your piece could be chipped or shattered.

Please understand that nicknames are common, especially among metaphysical communities. Just be aware and know what you’re investing in so you can be equipped to handle your gems with care.

I had the pleasure of meeting with the owner of the mine of these Blue Calcite hearts. We had an in depth discussion about this and his labeling of his products were true to their mineralogy. These hearts are Blue Calcite, though you may find hearts, pyramids, spheres, etc under the name Blue Onyx at other shops and gem shows.

Blue Calcite corresponds with the Throat Chakra and Water Element. It is also associated with Pisces, Cancer, and Scorpio. My relationship with Blue Calcite is through a connection with Mother Ocean and my love of mermaids and Larimar.

This listing is for 1 Blue Calcite Heart and is gently packaged and gift wrapped with magic herbs to accompany it in transit to you.

They measure approximately 1.5-1.75 inches.

At a Glance

Zodiac: Pisces, Cancer, Scorpio
Number: 8
Element: Water
Direction: West
Planetary: Saturn
MOHS: 3 (handle with care)


Members of IHS Classes receive a 10% discount and is automatically applied when logged in.

Magical blessings,



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