All information listed in this section was submitted by the respective companies. Kenilworth Media Inc. cannot assume responsibility for errors of relevance, fact or omission.

Ideal Cut Diamonds with Hearts and Arrows

Grunberger Diamonds

Diamonds and gemstones (loose and jewellery)
Diamonds, loose - fancy shape

Grunberger Diamonds is the world’s largest producer of American Gem Society (AGS) 0 super ideal-cut melee with hearts and arrows. Specializing in sizes from 1 to 3.89 mm (0.0040 to 0.22 carats), Grunberger manufactures hundreds of thousands of diamonds a month in more than 40 qualities, each ideal cut with hearts and arrows. Grunberger’s diamonds can be calibrated to within 0.0250 of a millimetre, ensuring they will match and fit the settings you designed while being the most beautiful choice you can make.

Founded more than seven decades ago and now in the well-suited hands of the third generation, Grunberger Diamonds continues to thrive worldwide, with four sales offices over three continents. As an AGS supplier, Grunberger Diamonds adheres to the highest level of grading standards and business ethics.



Additional Information

More About Our Diamonds
Subscribe to our newsletter


Contact Information

Phone: 516-482-6212


RELATED ARTICLES

Blockchain and the road to ethics

In recent years, evolving consumer demands and concerns over ‘conflict’ diamonds and minerals have coincided with the emergence of a powerful data-tracking approach known as ‘blockchain.’ This technology, in development since the 1980s, anchors a core tenant of ethical sourcing: traceability and transparency.

Bridal bling: Falling in love with these vow-worthy styles

When it comes to jewellery, today’s couples are seeking fresh, innovative twists on a classic symbol that can express their unique love story while remaining on the cutting edge of fashion (laboratory-grown diamonds, anyone?).

Beyond the tombstones of good intentions

The ethical jewellery cemetery is full of tombstones of good intentions, inscribed with the words:  plus ça change, plus c’est la même chose (i.e. “the more that changes, the more it’s the same thing”).

City of Lights Awaits: Your go-to guide for the hottest styles at JCK Las Vegas

The bright lights in Las Vegas will soon be shining on the latest looks as the jewellery industry travels to Sin City, and you won’t want to miss a thing. Here is a sneak peek of what you can expect to see at JCK this June.

Spectacular shades: The colour of diamonds

Diamonds have fascinated jewellery and gemstone fans for thousands of years. We regard these shiny stones as solidified drops of the crystal-clear, pure morning dew, with the most exceptional among them classified as gems of ‘the finest water.’ These descriptors are all well and good for clear gemstones, but what…

Bolstering economies one diamond at a time

Today’s jewellery consumers are discerning and often make purchases based on sustainability, ethical business practices, and labour sourcing. Many who are purchasing gemstones, however, have misconceptions about the natural diamond industry, as the progress many countries have made within this field is not widely understood.

Read the Latest Issue

July 2026 cover
July 2026
Flipbook
PDF