Nishmat's Women’s Health and HalachaIn memory of Chaya Mirel bat R' Avraham

  • Hebrew
  • English
  • Espnaol
  • Francais
  • donate
Side Bar

Evaluating size of stain

26 November, 2015


I am having trouble calculating and understanding what a "gris" is, when a stain is not in a perfect circle. I am in my 7 clean days and just got 2 small-ish red spots – which normally does not happen – so I am hoping it is a stain but don't know how to assess it..?
Thank you! This is a great web-site!


Assuming the two spots are on a white cloth surface (and not on your body), each spot is assessed independently.  The gris is a measure of area, roughly the same area as an American dime or Israeli shekel.  If each spot is totally covered by such a coin, it is clearly smaller than a gris.

Since the measure is one of area, if the stain extends beyond the coin but does not fill it (i.e., it is long and thin or uneven), you could trace its shape onto a piece of paper, cut out the tracing, and then cut it up and rearrange the pieces to see if the area clearly fits within the area of the coin.  If you are still not sure, or if the result is borderline, you should bring it to a rav for evaluation.

Please get back to us with any further questions.

This internet service does not preclude, override or replace the psak of any rabbinical authority. It is the responsibility of the questioner to inform us of any previous consultation or ruling. As even slight variation in circumstances may have Halachic consequences, views expressed concerning one case may not be applied to other, seemingly similar cases. All health and health-related information contained within Nishmat's Women's Health & Halacha Web site is intended to be general in nature and should not be used as a substitute for consulting with your health care professional. The advice is intended to offer a basis for individuals to discuss their medical condition with their health care provider but not individual advice. Although every effort is made to ensure that the material within Nishmat's Women's Health & Halacha Web site is accurate and timely, it is provided for the convenience of the Web site user but should not be considered official. Advice for actual medical practice should be obtained from a licensed health care professional.

For further questions or comments: 

The Nishmat Women's Health and Halacha Site is a public service of Nishmat, The Jeanie Schottenstein Center for Advanced Torah Study for Women. This project and others like it are made possible by contributions from people like you. If you have benefited from the service, and wish to enable us to help others, click here to donate.

Users of Internet filtering services: This site discusses sensitive subjects that some services filter without visual indication. A page that appears 100% complete might actually be missing critical Jewish-law or medical information. To ensure that you view the pages accurately, ask the filtering service to whitelist all pages under

Accessibility Toolbar