BeHearty offers the Voss+Agin 7.5mm Freshwater Pearl Necklace $69.99. Coupon code "DNEWSPEARLS" cuts it to $19.99. With $2 for shipping, that's $279 off list and the lowest price we could find. It's set in sterling silver and includes an 18" necklace. Deal ends November 13.
You very likely are putting your laptop battery into an early grave.