Want to reach the accessory-­conscious male consumer? Here are eight men’s collections to class up your cases.Have you heard the news? Men’s jewelry is booming! There are numerous reasons for the trend—from the rise in same-sex engagements to the influence of rock and hip-hop stars, who regularly appear on television, in magazines, and on social media decked to the nines in jewels—but there’s no doubt that it’s happening. Recent research from the NPD Group reveals that sales of men’s jewelry grew 3 percent from May 2013 to May 2014, to reach $3 billion—part of an overall spike in men’s accessory sales. For jewelers, this means there’s ample cause to expand the in-store selection of men’s pieces to meet growing demand. Need suggestions for what to carry? Consider these eight new men’s lines.(Above) Beaded bracelet with frosted black onyx, fossilized woolly mammoth