دائري
A true sphere, held to a diameter tolerance of ± 0.05 mm on Luxury Series work. Nothing hides a sphere that is not perfect.
- Standard sizes
- 6 · 8 · 10 · 12 · 14 mm
- Aspect ratio
- 1.00 : 1
- Production note
- The hardest profile to hold to tolerance across 99 beads.
- Available in
- All nine amber varieties
- Minimum order
- 100 pieces per specification
Custom dimensions are routine. If the profile you need is not in the library we tool for it, proof it against a physical prototype, and archive it under your account so it is never produced for anyone else.
Amber weight, by diameter
Integrated from this profile’s own geometry at 1.08 g/cm³, beads only. Amber is traded by weight, so this is the figure that turns a specification into a price.
- 10G
- 8 mm · 33 beads
- 29G
- 8 mm · 99 beads
- 19G
- 10 mm · 33 beads
- 56G
- 10 mm · 99 beads
- 32G
- 12 mm · 33 beads
- 96G
- 12 mm · 99 beads
The profile that wastes the most material
A sphere carries about half the amber of a cylinder of the same nominal diameter, which means roughly half the blank is removed to reach it. In a material sold by weight that is the single largest yield penalty in the range, and it is why a round strand costs what it does relative to a barrel that looks a similar size.
Buyers occasionally read round as the plain, cheap option because it is the simplest shape to describe. It is the opposite, and we would rather explain the arithmetic than let a quotation come as a surprise.
Nowhere to hide, in every direction
A sphere has no flat, no shoulder and no end. Every point of the surface is equivalent, which means any deviation — a slight ovality, a flat spot from over-buffing, an inconsistency in polish — is visible from every angle rather than only one. It is the most honest test of a supplier’s process in the whole range.
It is also the least forgiving of a drill hole that is not exactly on centre, because there is no geometry to disguise it. A round strand that will not hang straight is the clearest possible evidence of poor drilling.
How it reads on the strand
Round beads roll rather than step, so a round strand runs continuously through the hand with no discrete count. It is the profile with the widest cross-cultural acceptance and the one least tied to any regional tradition, which makes it a reasonable choice for markets where you are unsure of preference.
How sphericity is actually checked
A round bead can measure correctly across one axis and be visibly oval across another, so a single caliper reading proves very little. We measure across three axes on the sampled beads and record the spread rather than the best figure, which is the only way the number means anything on a sphere.
This is worth asking any supplier about specifically. If the answer is a single nominal diameter with no mention of how many axes were measured, the tolerance quoted is describing one direction of a shape that has infinitely many. On our Luxury Series specification the spread across axes is held inside the same ± 0.05 mm band as the diameter itself.
Questions about this profile
Across three axes on the sampled beads, recording the spread rather than the best figure. A single caliper reading on a sphere describes one direction of a shape that has infinitely many.
Because there is no geometry to disguise it. On a barrel a slightly off-centre bore is absorbed by the flat ends; on a sphere it shows immediately as a strand that will not fall straight.
No, it is close to the most expensive. A sphere carries about half the amber of a cylinder at the same nominal diameter, so roughly half the blank is removed.
Every point of the surface is equivalent, so any ovality, flat spot or polish inconsistency is visible from every angle.
Markets where regional preference is unclear. It is the least tradition-bound profile in the range.
Quote a round programme.
Send a diameter, a bead count and a quantity. We reply within one business day with a specification and an indicative price.