Answer:
The mistress is not as beautiful as natural elements.
Step-by-step explanation:
In this stanza, Shakespeare tells us that his mistress is not as beautiful as the natural elements of coral and snow. This is unusual for a love sonnet at the time. However, Shakespeare is using this difference to his benefit, as the sonnet is meant to mock or criticize sonnets that present beauty as overly exaggerated and perfect. Instead, Shakespeare tells us in this poem that although his mistress is not as beautiful as these elements, he still loves her.