A Rudraksha report carries three numbers that are easy to skip past: the bead's width, its height and its weight. They are not filler. They are the fingerprint that links the report to one physical bead, and they carry information about origin and condition that the eye cannot supply.
What is measured
Width — the largest diameter across the bead, at right angles to the hole, in millimetres to a tenth.
Height — the length along the axis of the hole, pole to pole, in millimetres.
Weight — on a balance reading to a hundredth of a gram.
A DRGTL card gives width by height (for example "17.2 × 18.0 mm") and weight in grams. Both are recorded before any other test, on the bead as received.
What size tells you
Size is the first indicator of origin. Himalayan beads are large — commonly 15 to 25 mm, with fine specimens over 30 mm in the higher mukhi. Indonesian beads are small — 5 to 15 mm is the usual run. There is overlap, but a 22 mm bead is almost certainly Himalayan and a 9 mm bead almost certainly Indonesian.
Size also relates to mukhi count. Higher counts need more chambers, and more chambers need a larger stone; a very small bead with a very high count is unusual enough to warrant a careful X-ray. Nepal vs Indonesian (Java) Rudraksha covers the origin question.
Mala beads are sold by size — 5 mm, 6 mm, 8 mm and so on — and the stated size should match the measurement.
What weight tells you
Weight relates to size, maturity, drying and treatment. A well-matured, fully dried Himalayan bead of 18 mm might weigh 2–4 g; the same size bead that has been oiled will weigh more; an immature or poorly formed bead will weigh less. A bead that is unexpectedly heavy for its size may be dense wood, a composite with mineral filler, or a bead with metal or filler in its hole. A bead unexpectedly light may be resin or hollow.
Weight is not an identity test — genuine beads span a wide range — but a figure well outside the expected range for the size is a prompt for closer examination.
Density
Density is weight divided by volume. Laboratories rarely measure it precisely for Rudraksha because the bead's volume is awkward to determine (the hole and the irregular surface complicate immersion methods) and because the range for genuine beads is so wide that it discriminates poorly. What the examiner does is compare weight and size against experience: does this bead feel and weigh like what it is claimed to be? The number the report gives is weight; density is a judgement behind the scenes.
This is also why the water test — a crude density test — fails. Genuine beads range across the density of water. The Rudraksha water test.
Using the numbers to match your bead
This is the most practical use of the figures. Weigh your bead on a jeweller's or kitchen balance that reads to 0.01 g, and measure its width with a vernier calliper or a ruler. Compare with the report.
- Weight within a few hundredths of a gram, and dimensions within a few tenths of a millimetre: the bead is very likely the one tested.
- Weight off by a tenth of a gram or more, or a dimension off by a millimetre: the bead may be different, or may have been oiled or dried since testing. Oiling adds weight; drying removes it. A difference in size, which does not change, is more telling than a small difference in weight.
- Large differences: the report does not describe this bead.
Combine the numbers with the photograph. Surface features — a distinctive ridge, a pit, the shape of the crown — are individual, and a good photograph makes the match certain. Matching the report to the article in your hand.
Frequently asked questions
Does a bigger Rudraksha mean a better one?
It means a larger one, which for Himalayan beads usually means more expensive. Quality — surface condition, well-formed grooves, absence of cracks — is separate from size.
My bead weighs slightly more than the report says. Is it a different bead?
If the dimensions match and the weight is up by a few hundredths of a gram, oiling or humidity is the likely reason. If the dimensions differ, the bead is different.
Why does the report give width and height separately?
Because beads are not spheres. Many are wider than they are tall, or the reverse, and the two figures together describe the shape as well as the size.
Is there a standard weight for each mukhi?
No. Weight depends on size, origin, maturity and treatment, and beads of the same mukhi vary widely. Any "weight chart" for mukhi counts is a rough guide at best.
Can size identify Bhadraksha or other substitutes?
Not alone; substitute seeds come in similar sizes. Surface texture and the X-ray do that work.