0
Go Back

Black Onyx Necklace - Solitaire

£241 GBP £296 GBP
-18% £241 GBP HOLIDAY SALE

One hand-picked genuine birthstone encased in lush 10k solid gold. Name a more timeless yet personal way to wear an authentic gem with meaning and character. Why not gift this premium genuine birthstone necklace to a loved one, yourself, or why not both?

Read more
benefits of Black Onyx | Stone of Willpower
Focus
Determination
Self-Control
2-year
warranty
fabulous gift-ready
packaging
diamond & gemstone
authenticity
over 1.8m followers &
30k+ 5-star reviews
Necklace Size Chart
At Moon Magic, we use the imperial system for measurements.
Total Length (mm) Total Length (in) Moon Magic Size
Up to 356mm Up to 14" Short
Up to 406mm Up to 16" Mid-Length
Up to 457mm Up to 18" Long

Not Sure Yet?

Use our Necklace Size Guide to find your perfect fit.

VIEW SIZE GUIDE
Quality & Details

One hand-picked genuine birthstone encased in lush 10k solid gold. Name a more timeless yet personal way to wear an authentic gem with meaning and character. Why not gift this premium genuine birthstone necklace to a loved one, yourself, or why not both?


-

- Authentic Moon Magic Black Onyx
- Stone Size: 0.23" x 0.23" (6mm x 6mm)
- Chain Length: 16" with 2" extender
- Cut: Round-shaped brilliant cut
- Gem authenticity approved by GIA

Quality
We create gemstone jewelry designed to be worn every day and made to last - today, tomorrow and for years to come.
Quality Materials
We use premium, recycled metals with a thicker-than-standard coating, making them tarnish-resistant and built to last.
Every gemstone is 100% authentic - first approved in-house, then independently tested by the Gemological Institute of America (GIA), the world leader in gemstone testing.
Quality Control
Each piece is handmade with care, then hand-inspected by our in-house quality experts to ensure it meets the highest standards before it reaches you.
Warranty
Because quality means confidence, every piece comes with a 2-year warranty so you can love it worry-free.
Properties of Black Onyx

Black Onyx

  • + Focus
  • + Determination
  • + Self-Control

Known as the Stone of Willpower, this powerhouse gemstone helps you lock in focus, stay disciplined, and push through doubt.

WHAT ARE THE BENEFITS OF BLACK ONYX?

Feeling tempted to procrastinate or give in to bad habits? Moon Magic Black Onyx is here to reinforce your self-control. 

It strengthens your determination, sharpens your focus, and keeps your mind steady - even when everything else is pulling you in the wrong direction. 

It’s the difference between starting strong and finishing stronger.

WHEN SHOULD I WEAR BLACK ONYX?

Wear Moon Magic Black Onyx when your motivation is running on empty and distractions keep pulling you away from what really matters.

Whether you’re chasing a big goal, breaking free from a negative cycle that’s held you back, or just need a reminder to stay in control - Black Onyx has your back.

HOW DOES BLACK ONYX WORK ITS MAGIC?

Moon Magic Black Onyx vibrates at 369 Hz, a frequency known for strengthening mental endurance and willpower. It works through your Root Chakra, keeping you grounded, focused, and fully in control of your energy.

WHY BLACK ONYX FROM MOON MAGIC?

Moon Magic Black Onyx is ethically sourced from Brazil, with each gemstone individually handpicked for its deep luster and rigorously quality control tested for clarity and durability. 

Blending contemporary style with soulful intention, our jewelry lets you wear the energy of each gemstone - made to be styled, stacked and worn your way.

Shipping & Returns

Delivery Details

Returns

You have 60 days from delivery to return or exchange your order through our easy-to-use online return portal. Please note: Exchanges are not available on international orders.

Customs & Duties

Good news! All our product prices are now inclusive of taxes and duties worldwide.

Handmade & Shipping Origin

Each piece is handmade in India and only transits through our logistics hub in Hong Kong due to faster, more reliable worldwide delivery and to help reduce carbon emissions.

Diamond Certificate
While all our gems are regularly tested, there is an option for an independent IGI certificate on higher-value pieces.
THIS WILL INCREASE DELIVERY TIME BY 10+ WORKING DAYS
How It Works
Step 1
After you've placed your order, send an email to [email protected] within the first hour.

Don't forget to include your order number in the email.

Step 2
Once your piece is made, it is sent to IGI (International Gemological Institute) for certification, confirming the authenticity & quality of your new precious gem.

Step 3
Finally, you'll receive your truly remarkable and certified diamond!

Most Often Styled With

  • Black Onyx Necklace - Solitaire
  • plus icon
  • Adjustable Black Onyx Ring Flourish - December Birthstone
  • plus icon
  • Black Onyx Round Studs - December Birthstone
  • Black Onyx Necklace - Solitaire
    This item: Black Onyx Necklace - Solitaire
    £241 GBP £296 GBP
    View item
  • Adjustable Black Onyx Ring Flourish - December Birthstone
    Adjustable Black Onyx Ring Flourish - December Birthstone
    £77 GBP £121 GBP
    View item
  • Black Onyx Round Studs - December Birthstone
    Black Onyx Round Studs - December Birthstone
    £107 GBP £130 GBP
    View item

Customer Reviews

from 5

Based on Reviews

Don’t just take our word for it! Hear what over 500K+ happy customers and 30k+ 5-Star reviews have to say.

See It Styled On Instagram

Over 1.1 million followers on social media can't be wrong

LIKE US FOLLOW US