14k gold and stone items must be ordered by Monday, November 26th at 2:00PM EST, for guaranteed Holiday delivery. These items require 2-4 weeks for production; any 14k gold or stone orders received after November 26th may not be delivered in time for the Holiday. 

Order processing may require more time than our usual 3-5 business day turnaround. Please note, this does not include shipping time.

Backorders may occur. We do our best to keep ample inventory of every style, however we do tend to sell through some items completely during the holiday shopping season. If your item is not in stock we will notify you as quickly as possible with options for your order.

Black Friday and Cyber Monday discount codes cannot be combined with other offers or applied to previous purchases.

Live in NYC and need your necklace ASAP? Visit the retail store, STORY, in Chelsea to build your necklace at their Custom Necklace Bar. STORY only has plain sterling silver pendants and our thin cable chain in stock; all other components will have to be ordered via our website and will follow our regular processing and shipping procedures. STORY is located at 144 10th Ave @ 19th St.


We accept the following methods of payment: Visa, MasterCard, American Express, Discover, JCB, Diners Club, PayPal, Apple Pay, Amazon Pay and Mathematics by Beth Macri gift cards issued in USD.

Your card will be charged at the time of order. If, for any reason, we are unable to fulfill your order, we will issue a full refund to you by your payment method.


Orders from the sterling silver Hidden Message Collection will be filled from stock if available and shipped within 3-5 business days; this does not include shipping time. When stock is not available, your order will be custom made and should ship in 2-4 weeks. We will e-mail you if your order is not in stock and you may cancel or change your order if you so choose.

Items from our 14k Collections are made-to-order and take 2-4 weeks to be made.

A signature will be required for all orders valued at $500 USD and above. If you would like to waive this requirement please contact customerservice@mathematics.nyc.