Grades of Mulberry Silk: What Quality Labels Really Mean

Shopping for Mulberry silk can mean sorting through grade letters, numbers and quality claims.

Those labels may help describe a seller’s product, but they are not always presented in a consistent way across every retailer. Read the details around the grade before comparing products.

What does a silk grade refer to?

Silk grade is generally used to describe aspects of the raw silk fibre, such as uniformity or visible defects. A higher grade label may indicate a more consistent raw material in a supplier’s system.

The number alone does not tell you how a finished pillowcase or garment will feel or wear.

Different sellers may use grading terms differently. Ask for a clear explanation if the page does not say what its grade means.

Do not assume that an “A” or “6A” label is a universal certification unless the seller identifies the standard behind it.

It is also useful to separate a fibre’s origin from its quality claim. “Mulberry” describes the silk source, while grade language usually refers to a supplier’s assessment of raw material.

Neither term alone confirms the quality of every seam, dye or finish in a completed product.

Grade is only one part of quality

Finished fabric also depends on yarn, weave, finishing, seams and the way the item is constructed. A well-made product should explain its fibre content and provide practical information about dimensions, care and returns.

Momme is a measure of silk fabric weight, not a grade. Heavier fabric is not automatically the best choice for every use.

Compare the intended product and its construction, and use the AU momme comparison guide to understand how weight is discussed.

What to check on a product page

Read the fibre content first and check whether the item is 100% silk or a blend. Look for clear photographs of the surface, seams, closures and any lining.

Product descriptions should distinguish silk from satin: silk is a fibre, while satin is a weave.

Check the care instructions and whether they fit your routine. A delicate garment that requires special care may not suit someone who wants easy everyday laundering. The AU silk care guide helps set expectations for general handling.

Match the fabric to its use

For bedding, consider how the sheet or pillowcase is made, its dimensions and the feel you prefer. Browse the AU silk bedding range to compare product types and listed weights.

For clothing, fit and construction may matter as much as fabric weight.

If two products use the same grade label, compare their full specifications rather than assuming they are identical. Ask about unclear claims before purchase, especially if the seller uses technical terms without defining them.

For example, compare two pillowcases by fibre content, closure, dimensions and washing method, then consider weight and price. This turns an abstract grade claim into details you can assess for your own use.

A useful buying checklist

Confirm fibre content, understand what the grade label means, compare momme separately, inspect construction details and read care instructions.

Also consider seller transparency and return terms. A grade can be one useful clue, but it should not replace the information that tells you what you are actually buying.