Black Onyx Round Pendant — Gold Tone, 20mm

A gold-tone disc with a single black onyx set into it — deep and matte in the center, mirror-bright around it, and barely 4 g on the neck.

Please note: the pendant is sold on its own — chain not included. It is designed to be paired with a chain you already own. See necklaces & pendants

Why You'll Love It

• Black onyx against polished gold tone – the stone is left smooth and unfaceted, so it reads as a deep, solid black rather than a sparkle. Quiet, confident, and it goes with everything.
• Sits flat, wears light – at 4.1 g and 4 mm at its thickest, it stays put against your chest instead of swinging or flipping over.
• A shape that reads as a signature, not a trend – 20 mm across, with the stone set low and slightly below center so the light catches the rim first.
• Everyday-safe finish – hypoallergenic and skin-safe, comfortable over a shirt or against skin.
• Easy to gift – it suits anyone who already has a chain they love.

Product Details

• Stone: Black onyx, 12 mm round cabochon
• Pendant size: 20 mm diameter
• Thickness: Up to 4 mm (excluding the bail)
• Material: Copper-zinc alloy base with 18K gold-tone finish
• Finish: High-polish 18K gold tone
• Chain: Not included
• Weight: 4.1 g
• Hypoallergenic: Yes

Perfect For

Everyday wear, the office, evenings and gifting. It works on a fine gold-tone chain, a black cord or a heavier chain — the black keeps it from ever looking like too much.

Care Instructions

Wipe clean with a soft dry cloth after each wear. Keep the stone away from perfume, hairspray and harsh chemicals, and store the pendant separately from harder pieces so the polish is not scratched.

Frequently asked

Does it come with a chain?
No — the pendant is sold on its own so you can pair it with a chain you already own. Any chain with a small clasp will thread through the bail; a chain of about 1–1.5 mm suits the 20 mm size best.

Is the onyx real?
Yes. It is black onyx, cut as a smooth 12 mm cabochon rather than faceted — which is why it reads as a solid, deep black instead of catching light.

Can I wear it every day?
Yes. It is hypoallergenic and made for daily wear. Put it on after perfume and lotion have dried, and take it off before showering, swimming or the gym.

Will the finish fade?
The 18K gold tone is applied as a vacuum ion finish over a copper-zinc alloy base. With normal wear and the care routine above, it keeps its color far longer than ordinary fashion jewelry.

When will it arrive?
Orders are dispatched within 3 business days. Standard delivery takes 7–12 business days after dispatch, so most orders arrive within 10–15 business days. Flat US$5.90 worldwide, free on orders over $30 after discount.

Read the full jewelry care guide