Black Onyx-Look CZ Flat Back Stud, 18G Threadless

Gold 2mm / 5mm Short

$28.90 CAD

Black Onyx-Look CZ Flat Back Stud, 18G Threadless

Name: Black Onyx-Look CZ Flat Back Stud, 18G Threadless
Rating: 4.87 (62 reviews)

$28.90 CAD

Color Gold 2mm Gold 2.5mm Gold 3mm Silver 2mm Silver 2.5mm Silver 3mm

Size 5mm Short 6mm Standard 8mm

● Dispatched within 1 working day.

Free standard shipping
US: $50 USD+ · Canada: CA$100+

Hypoallergenic

Returns by delivery country

Gift packaging

One small black stone and nothing else: this stud keeps a dark point of color on the ear in 2mm, 2.5mm or 3mm. The black stone is cubic zirconia, set in 925 sterling silver on an 18G threadless push pin post, so the flat disc back lies against the skin. Sold in single.

What is in this black stone flat back stud?

The top is a black CZ in a 925 sterling silver setting, and it fits an 18G threadless push pin post, which holds by tension rather than screw threads. Gold labels carry 18K gold plating and Silver labels rhodium plating.

Detail	Specification
Base metal	925 sterling silver
Gold label finish	18K gold plating
Silver label finish	Rhodium plating
Stone	Black cubic zirconia
Stone size options	2mm, 2.5mm, 3mm
Gauge	18G
Closure	Threadless push pin, flat back
Post length options	5mm Short, 6mm Standard, 8mm
Head Only No Backing	Decorative top alone, no post or back
Quantity	Single earring

Related styles are grouped in our flat back earrings category.

How do the two option menus work together?

The Color menu sets both the plating and the stone size in one label: Gold 2mm, Gold 2.5mm, Gold 3mm, Silver 2mm, Silver 2.5mm and Silver 3mm. The Size menu then sets the post, either 5mm Short, 6mm Standard or 8mm as a complete earring, or Head Only No Backing for the top on its own. Check the selected option and displayed price before adding to cart.

When is a black stone the right choice?

Choose black if you want a defined dark point instead of sparkle. It keeps its outline against both gold and rhodium plating, and the 2mm reads as a small dot while the 3mm gives the stone more presence in a stack.

What does Head Only No Backing include?

Just the decorative top, with no post and no back, for customers who already own matching Marafine components. Fit with other sellers' backs is not confirmed.

Is the stone natural onyx?

No. It is a black cubic zirconia; the onyx name describes the deep black color rather than the material.

How many earrings come per order?

One. This style is sold in single, so order two if you want a matching pair.

How do I care for it?

Remove it before bathing, swimming and applying perfume, wipe it with a soft dry cloth, and keep it away from chemicals and abrasive polishing.

925 sterling silver · 18k gold-plated options · nickel-free

925 sterling silver base, with 18k gold-plated and rhodium-plated options. Nickel-free and made to be worn every day.

Measurements are listed in millimetres. “Single” is one earring; “Pair” is two. Choose the diameter that suits the look you’re building.

Keep dry and away from water, perfume and lotions. Store in the pouch provided and gently polish with a soft cloth.

United States: free standard shipping from $50 USD after discounts and before taxes; dispatch normally within 1 business day. Request an eligible refund within 14 days of delivery or store credit within 30 days. Returns require unworn items in original condition and packaging, with all parts included; worn earrings, earring components, sale and final-sale items are excluded. A $9.95 USD return shipping fee is deducted; no fee applies to items that arrived defective, damaged or incorrect.

Canada: standard shipping is CA$7.50 below CA$100 and free from CA$100 after discounts and before taxes. Dispatch normally takes 1 business day, followed by an estimated 3–10 business days in transit. Express is CA$25.99; contact us for an express delivery estimate. Request an ordinary return within 7 calendar days of delivery. Items must be unused, unworn, in original condition and original packaging; used or worn earrings are excluded for hygiene reasons. The customer pays return postage. No in-person returns.

Obtain approval before mailing any return. Defective, damaged or incorrect items are assessed separately; applicable statutory rights are preserved. See our Shipping Policy and Returns, Exchanges & Warranty Policy for country-specific eligibility and instructions.