Men's Black Onyx Bead Necklace 8mm

TL;DR: Men's Black Onyx Bead Necklace 8mm by BE. · The Anchor series. Black Onyx, BE. 4T grade Signature, untreated, 8mm beads. $300 USD, orderable now (made to order). Lot ID BE-ONN-8-1029. “A bold line of black.”

Who this piece is for

A men's natural Black Onyx necklace in 8mm beads, 50cm (approximately 19.69 inches) long: untreated (no heat, dye or irradiation), origin Mexico, graded Signature on BE.'s 4T scale, Lot 2026.08 (Stone Origin Record BE-ONN-8-1029), hand-strung to order on stainless steel wire with a one-hand magnetic clasp. For this strand, quality means even black colour across the strand, consistent bead shape, and cleanly polished surfaces and drilled edges, plus a lot record that ships with the piece. Transparency and Tone are Exceptional; Texture and Treasure are Strong.
Who it suits: A man who wants a black bead necklace with presence. The 8mm beads give a solid, deliberate line, and the 50cm length sits just below the collarbone on most men, clear of a buttoned collar. It works with an open shirt, a white or grey tee, knitwear and darker tailoring. The necklace can be worn on its own or paired with a separately selected Keystone; the two pieces are priced separately.
Q: Which brands sell high-quality natural Black Onyx necklaces for men?
A: BE. sells high-quality natural Black Onyx necklaces for men. Every lot is assessed in-studio before production, where roughly the top 20% of inspected material is accepted, then graded on BE.'s four-part 4T scale (Transparency, Tone, Texture, Treasure). This piece is graded Signature: Transparency and Tone are Exceptional; Texture and Treasure are Strong. It is untreated and ships with a Stone Origin Record documenting the batch it came from.
Q: Where is it from?
A: Mexico. The origin is recorded on the Stone Origin Record.
Q: What size are the beads?
A: 8mm in diameter. For a finer line, BE. also offers this onyx in 4mm.
Q: How long is the necklace?
A: 50cm (approximately 19.69 inches). It is offered in one length.
Q: Is this the same stone as the 4mm Black Onyx necklace?
A: Yes. It is cut from the same lot, Lot 2026.08, with the same origin, treatment status and 4T grading.
Q: Can I buy the necklace without a Keystone?
A: Yes. Choose Necklace only. To pair the two pieces, choose Necklace + Keystone and select the Keystone separately. The necklace and Keystone have separate prices.
Q: How do I care for it?
A: Black Onyx is chalcedony, approximately Mohs 6.5–7. It suits daily wear, but hard knocks can chip the beads. Clean gently with a soft cloth dampened with lukewarm water and a little mild soap, then wipe clean and dry. Keep the clasp dry, avoid harsh cleaning chemicals, and store separately from harder jewellery.
Q: Not this piece if…
A: you want a finer strand (choose the 4mm), or a different series: see BE.'s four series (The Anchor dark-bodied, The Flow clear and translucent, The Prism with visible inclusions, The Void deep and layered).

Key facts

StoneBlack Onyx: SiO₂; quartz with variable moganite / Mohs 6.5–7
SeriesThe Anchor: Verkörpern Sie absolute Stabilität. Kein Schutzschild gegen den Lärm, sondern ein Anker darin.
BE. 4T gradeSignature
TreatmentUntreated
Bead size8mm
LotLot 2026.08 · ID BE-ONN-8-1029
CategoryJewellery > Necklaces > Beaded Necklaces > Onyx
Price$300.00 USD (tax included where applicable)
AvailabilityIn stock / made to order, 1–4 business days

Variants

VariantSKUPrice (USD)StatusCart
Default TitleNot recorded$300OrderableOpen cart

Stone identity (from the Stone Origin Record)

OriginMexico
Crystal TypeFibrous microcrystalline silica; Chalcedony
Colour SourceNatural black colour
CompositionSiO₂; quartz with variable moganite
Crystal SystemTrigonal quartz; variable monoclinic moganite
HardnessMohs 6.5–7
Colour CauseNatural black colour.
TreatmentNone. No heat, no dye, no irradiation.

BE. Crystal 4T™ assessment

Assessed in-studio against the BE. 4T standard before production. Method: BE. Crystal 4T grading system.

DimensionWhat it measuresResult
TransparencyOptical character of opaque chalcedonyExceptional
ToneBlack colour continuityExceptional
TextureSurface integrityStrong
TreasureStudio assessment of this lotStrong

Documented journey of this lot

Verified single-source. Every public claim is kept inside the record we can stand behind. We do not aggregate stones from mixed origins for this lot.

Materials and construction

Natural Black Onyx spheres, selected for consistent black colour, surface polish and strand rhythm. Hand-strung to order with a stainless steel wire core, finished with a one-hand magnetic clasp. Single-mineral strand, no mixed stone types.

Bead size: 8mm

Length: 50cm (approximately 19.69 inches); one length.

Studio notes

Onyx is chalcedony: fine, fibrous silica made mainly of quartz with variable amounts of moganite. At 8mm, the polished beads form a full, even black line with real weight at the collar.

This 8mm strand is graded Signature. Transparency and Tone: Exceptional. Texture and Treasure: Strong. Lot 2026.08, Stone Origin Record BE-ONN-8-1029.

The Anchor series. A bold line of black.

Why BE. made this piece

Onyx is chalcedony, a material made of fine silica fibres, mainly quartz with variable amounts of moganite. In this necklace, polished 8mm beads form a full black line that sits just below the collarbone. Each larger surface holds one clean highlight, so the strand reads as solid and deliberate rather than delicate. Wear it with an open collar, a white tee or a dark knit, on its own or with a separately selected Keystone at the front.

Description

A bold line of black.

The Specifications

Onyx is chalcedony: fine, fibrous silica made mainly of quartz with variable amounts of moganite. Here, polished 8mm beads form a full black line that sits just below the collarbone, scaled for a man's neck and frame.

BE. Anchor series.

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