Second Suspect Arrested in Murder of Colorado Jeweler
Wheat Ridge, Colorado police took a 50-year-old man into custody Wednesday following a two-month search.

Late Thursday, the Wheat Ridge Police Department announced the arrest of Michael McCormack, 50.
McCormack faces charges of second-degree murder, second-degree kidnapping, aggravated robbery, and second-degree motor vehicle theft, police said.
He is the alleged accomplice of 41-year-old Charles Robinson Shay of Aurora, Colorado, whom police arrested in December after DNA recovered from a pair of flex cuffs found in Arguello’s store linked him to the crime.
Shay was charged with one count of first-degree murder and two counts of second-degree murder on Jan. 18.
Arguello, 64, owned Peter Damian Fine Jewelry & Antiques, located on W. 38th Avenue in Wheat Ridge, which is about 20 minutes northwest of Denver.
According to an affidavit filed at the time of Shay’s arrest, videos of the robbery homicide show that one man pulled a gun on Arguello and attempted to bind him with the flex cuffs.
Arguello resisted, the affidavit states, and the man shot him three times.
Two persons were seen leaving the jewelry store through the back door and fleeing the scene in a red Chevrolet Silverado pickup truck, which police later determined had been stolen in Glendale, Colorado, the month before the murder.
On Dec. 1, police found the red pickup truck in Centennial, Colorado.
According to the affidavit, it had been set on fire and was badly damaged, but police recovered two hats from the bed of the truck that matched the hats worn by the suspects seen fleeing the scene of Arguello’s murder.
The Wheat Ridge Police Department said Thursday that it issued the arrest warrant for McCormack on March 7 and had been trying to track him down ever since.
With the help of the Jefferson County Sheriff’s Office, Wheat Ridge detectives located McCormack in the Black Hawk area, about 40 miles west of Denver.
He was taken into custody Wednesday with the help of the sheriff’s office and the Black Hawk Police Department.
The Latest

This year’s honorees include a Midwest retailer and two multi-store independents, one in New York and the other in New England.

As an homage to iconic crochet blankets, the necklace features the nostalgic motif through a kaleidoscope of cabochon-cut stones.

Discover the dozen up-and-coming brands exhibiting in the Design Atelier for the first time.

When investing in your jewelry business, it's important not to overlook the most crucial element of success: the sales associates.

The “Royal Ruby” Collection is a quintet of untreated rubies curated by collector Jack Abraham.


The entrepreneur and “Shark Tank” star will share his top tips for success.

Two existing executives have been given new roles.

More shoppers are walking out without buying. Here’s how smart jewelers can bring them back—and the tool they need to do it right.

Meredith Tiderington, an electrical engineering student, was selected for the award.

It will quit assigning the stones specific color and clarity grades in favor of applying “new descriptive terminology.”

From design trends to sustainability, here’s a roundup of can’t-miss education sessions at JCK Las Vegas.

Her new role is director of strategic initiatives.

The designer is embracing bold pieces with weight to them in “AU79,” a collection she celebrated with a creative launch party.

On an earnings call, CEO J.K. Symancyk discussed what’s working for the company and how it’s preparing for the potential impact of tariffs.

The index partially rebounded after months of decline, due in part to the U.S.-China deal to temporarily reduce import tariffs.

The actress stars in the latest campaign set in Venice, Italy, and is set to participate in other creative initiatives for the jeweler.

The company has joined other labs, including GIA and Lotus Gemology, in adopting the Chinese term for "jadeite jade."

The large stone will be offered at its June sale along with a selection of secondary-type rubies from a new area of the Montepuez mine.

Located in Bangkok, the laboratory is Gemological Science International’s 14th location worldwide.

Those born in June have a myriad of options for their birthstone jewelry.

The diamond industry veteran has been named its senior sales executive.

The company plans to raise the prices of select watches to offset the impact of tariffs.

Between tariffs and the sky-high cost of gold, designers enter this year’s Las Vegas shows with a lot of questions and few answers.

Designed by founder Renato and his daughter Serena Cipullo, it showcases a flame motif representing unity and the power of gathering.

However, the tariffs remain in effect in the short term, as an appeals court has stayed the U.S. Court of International Trade’s decision.

The pop icon is one step closer to launching her “B Tiny” jewelry collection, a collection she first began posting about last fall.

Sponsored by Stuller