How Laksha Is Graded and Identified: Colour, Form and Purity

What is actually being judged when Laksha is graded?

Laksha is a resin secreted by the lac insect onto the branches of host trees, where it hardens into a crust around the twig. It is an animal derived material rather than a plant exudate, and therefore not a vegan ingredient, which anyone assessing it ought to know first. The collection and processing sequence is set out in the complete guide to Laksha. What follows deals only with the material in the hand.

Grading answers two questions at once: how good the original deposit was, and how far processing has taken it. Nearly every grade in circulation is named for a processing stage rather than a season or a harvest. A pale, clean flake tells you the material has been washed and filtered well; it does not by itself say the raw crust was good, and a practised eye looks for both.

What does raw Laksha look like before any refining?

In its rawest traded form Laksha is called sticklac, and the name is literal. The resin is scraped from the twigs it was deposited on and arrives as irregular, brittle lumps in colours running from dark brick red to a brownish purple that looks almost black. Mixed in with the resin are fragments of bark and twig, the dried bodies of the insects themselves, dust, sand, and a crimson colouring matter that bleeds freely into water.

Sticklac is not a lesser material, only an unfinished one, and its appearance says little about what it will yield once cleaned. Judging it is mostly a matter of the proportion of resin to rubbish: how much twig, how much grit, how much dust settles out of a handful.

How do sticklac, seedlac and shellac differ by eye?

These three names describe one material at three stages, and telling them apart on sight is the most useful skill in the subject.

• Sticklac. Crude scrapings. Lumpy, opaque, dark, visibly mixed with twig and insect residue.
• Seedlac. Sticklac crushed, sieved and washed. Loose granules roughly the size of coarse grain, which is where the name comes from. Colour runs from pale lemon through orange to a deep garnet, and the granules should pour freely.
• Shellac. Seedlac melted, filtered and formed. Thin brittle flakes with a glassy break and genuine translucency, or round buttons where the molten resin was dropped onto a flat surface to set. Dewaxed grades look clearer; bleached grades are pale to nearly white and give up most of their transparency.

Why the same substance carries two names in two different trades is covered in the article on Laksha and shellac.

What does the colour of Laksha tell you?

Colour is the first thing anyone reads and the most misread signal in it. Depth of colour in seedlac and shellac comes from three things: how much of the natural crimson colouring matter was washed out, how much natural wax remains, and how much heat the resin met while it was being filtered. A pale lemon grade has usually been washed hard and filtered carefully; a deep garnet grade has been washed less, or left deliberately fuller in character.

Neither is automatically better, and a grade name describing colour is a description rather than a verdict. What colour does reveal reliably is mishandling. Overheating darkens the resin and dulls its clarity, so a flake that looks dull, muddy brown and flat against the light has probably been scorched. Sound material at any depth of shade keeps its translucency: held to a window, a flake should glow like coloured glass, evenly, with no cloudy patches and no chalky bloom.

How clean should good Laksha be?

Cleanliness is easier to assess than colour because it does not depend on preference. Pour a handful of seedlac from one palm to the other and look at what stays behind. A good grade leaves the hand dry and barely marked. A poor one leaves grey dust, fine grit that can be felt between the fingertips, and a scatter of black specks that are insect residue rather than resin. A large proportion of fines and powder at the bottom of the bag means the material has been handled too often or has started to break down.

Uniformity matters for the same reason. Granules of uneven size point to careless sieving, flakes of uneven thickness to careless forming, and neither on its own condemns a batch, though both indicate a maker who was not watching closely.

What does adulterated Laksha look like?

Because the resin has always been worth more than the things it can be diluted with, adulteration is old and well recorded. The usual additions are a cheaper tree resin blended into the melt, mineral fillers such as chalk or ground stone, starch, extra colouring matter to brighten a dull batch, sand, and ground twig returned after sieving instead of being discarded.

Several of these leave marks the eye can catch. A flat, completely even colour with none of the slight variation natural batches carry is a warning sign. So is a greasy film on the surface, flakes that bend and feel soft instead of snapping, a sweetish pine smell where a faint, slightly sour resinous one belongs, and powder that clumps when it should run. Mineral pigments were used historically to brighten poor material, so an unnaturally vivid, opaque yellow or orange deserves more suspicion rather than less.

How can you check Laksha without a laboratory?

None of these replaces a proper laboratory assay where one is called for. As working checks on material in front of you, they are what the trade has long relied on.

• The snap. A sound flake breaks cleanly and brittly with a glassy edge. Bending, softening or a crumbly break suggests wax, filler or age.
• The light. Translucency held against a window is the single most useful visual check. Cloudiness means insoluble matter is present.
• Alcohol. Genuine material dissolves in ethyl alcohol and leaves very little behind. A heavy residue settling at the bottom of the glass is filler, grit or unmelted matter.
• Petroleum spirit. The resin itself is not taken up by petroleum spirit, while several of the cheaper resins used to dilute it are. Liquid that turns sticky after a wash is a reason to ask questions.
• Warmth. Gently warmed, sound material softens and can be drawn out into a thread. Resin that refuses to soften has aged, because lac slowly hardens and grows less workable with time.

Does grade still matter once Laksha is powdered?

Powdering removes almost every visual cue at once. Colour flattens towards a uniform pale tone, translucency disappears, the snap cannot be tested, and grit becomes hard to feel. Assessment therefore belongs before the mill rather than after it, and anyone working with the powdered form relies entirely on the grade and cleanliness of what went in. That powdered form, which classical sources call Churnam, meaning a finely powdered preparation, is described separately in the article on Laksha Churnam.

Classical descriptions run along a different axis from the physical one, characterising a substance by its own qualities and by its relation to the three Dosha rather than by the state of a particular consignment. Those categories, and the texts they are drawn from, are set out in the article on Laksha in the classical texts. The classical reading says what the material was understood to be; the physical one says what is actually in the bag.

Questions about Laksha quality and grades

What colour should pure Laksha be?

There is no single correct colour. Pure material runs from pale lemon through amber and orange to a deep garnet red, and where a batch sits on that range reflects washing and filtering rather than purity. What matters is translucency and evenness, not the depth of shade.

Is Laksha the same thing as shellac?

They are one material at different points in a single refining sequence rather than two substances, Laksha being the older and broader name. Where the two trades draw the line between them is dealt with in full in the article on Laksha and shellac.

Is Laksha suitable for vegans?

No. It is secreted by an insect and gathered with insect residue, so it remains an animal derived material however thoroughly it is later washed and filtered.

How can you tell if Laksha has been mixed with a cheaper resin?

Smell and feel come first: a sweetish pine note rather than a faint resinous one, and flakes that bend or feel tacky instead of snapping cleanly. A wash with petroleum spirit that turns sticky supports the suspicion, since the resin itself is not taken up by it.

Does Laksha change with age?

It changes rather than spoils. The resin slowly hardens, which makes older material harder to melt and less workable, and it will darken if it has been kept warm. Age is one reason two consignments carrying the same grade name can behave quite differently.

What is the difference between seedlac and button lac?

Seedlac is the washed granular stage and has never been melted. Button lac is a finished form made by dropping melted and filtered resin onto a flat surface, where it sets as thick round discs instead of thin flakes.