Mad Cave Studios and Vault Comics have told Diamond Comic Distributors that they will not be distributed by Diamond any more.

Signet Jewelers (NYSE:SIG), the world's leading retailer of diamond jewelry, is currently facing concerns raised by The Bear Cave regarding the growing popularity of lab-grown diamonds.

The Bear Cave issued a cautious report on Signet Jewelers (SIG), saying the firm believes today’s youth and future generations will shift ...