The Diamond

Diamonds are billions of years old and in some cases more than three billion years old. The antiquated Romans and Greeks trusted that precious stones were tears cried by the divine beings or fragments from falling stars, and Romans trusted that Cupid’s bolts were tipped with jewels (maybe the most punctual relationship amongst jewels and sentimental love).

Interesting fact: Researchers have found a planet that they believe is made for the most part out of carbon and is 33% unadulterated precious stone! Found in 2004, the planet circles an adjacent star in the Milky Way, and is named “55 Cancri e” (which, as we would like to think, isn’t an adequately alluring name for such an uncommon planet). Maybe considerably all the more astonishing, researchers have found a star that is basically a jewel of ten billion trillion carats. They named the star Lucy after the Beatles melody “Lucy in the Sky with Diamonds.”

Will this being said, the value of a diamond is based largely on rarity and desirability. On this basis, Color, Clarity, and Cut quality, together with Carat weight, comprise the so-called Four C’s that measure a diamond’s value.

The Cut

The cut does not refer to shape (pear, oval), but the symmetry, proportioning and polish of a diamond. The cut of a diamond greatly affects a diamond’s brilliance; this means if it is cut poorly, it will be less luminous.

Improper cutting diminishes the value of any diamond. The ideally cut stone is proportioned so that when light enters it, it is reflected back through the crown or top of the diamond, resulting in maximum brilliance. A diamond that is cut either too deep or too shallow allows an unnecessary amount of light to escape and thus can cause the diamond to lack “fire” and brilliance. This would lower the diamond’s value per carat. Looking at several diamonds will help you decide for yourself what cut details are most important to you. If you are looking for the best diamond engagement or wedding rings in Boston, Sharon, Mansfield or Walpole please visit any of our stores.

The Carat

A diamond’s weight is usually stated in terms of carats, and a carat is broken down into 100 points. Diamonds are weighed on a decimal scale. For example, a diamond that weighs .10 is a 1/10th-carat diamond and 0.50 is exactly equal to 1/2 carat.

Pricing is where the diamond weight comes into play. Let’s say a 0.50-carat diamond has a price of $1400 per carat. That diamond’s price for the stone would be $1400 * 0.50, or $700. Secondly, diamond prices per carat increase as you jump up to higher weight categories.

Custom Designs

The skilled and talented designers at Hefez & Sons can design and craft the engagement ring, wedding band, or fine jewelry item of your personal creation. Provide us with the information, and one of our designers will work with you to prepare drawings of your design for your approval.

Jewelry Cleaning

We perform steam and ultrasonic cleanings to remove accumulated dirt and oils from your fine jewelry.

To clean at home:

  • Remove your jewelry before taking part in any activity where there might be a risk of impact. Not even a diamond (the hardest of gemstones) is invincible to blows.
  • Avoid exposure of your jewelry to chemicals. Chemicals can damage the polished surface of porous gemstones and possibly discolor them. Examples of porous gemstones include: opals, emeralds, pearls, lapis lazuli, turquoise, and amber.
  • Diamonds, sapphires, and rubies can be cleaned in water mixed with a little ammonia. Use a soft toothbrush to remove any accumulation of dirt. Ultrasonic cleaners can also be used to clean these gemstones.
  • Porous or soft gemstones should be cleaned with a damp, clean, soft cloth. Ultrasonic cleaners are not recommended for these gemstones.
  • Pearls need a little extra care by avoiding contact with perfume and hairspray. It is best to put on pearls just before going out.
  • Have your pearls re-strung when they seem loose to the touch and the silk cord discolors.
  • Store each piece of fine jewelry separately.
  • Periodic visits to us for service will help ensure that all your stones are set tightly.

Customers can have the diamonds and precious gemstones removed from their settings and polished to remove surface scratches and bring the jewelry back to its original sparkle.

Jewelry Repair

We offer a wide variety of repair services, including replacing stones, matching missing pieces, and re-stringing pearls to restore your jewelry to wearable condition.

Remounting & Refitting

We offer a large selection of new settings for your cherished diamonds, gemstones, and family heirlooms. Visit our showrooms for a personal consultation about the range of options open to you. We also happily resize rings to make them fit properly.


Hefez & Sons offers customers accurate and in-depth appraisals. All appraisals are professionally completed and are accepted by all insurance companies. In the event of the loss of your precious possessions, it is important to know that you are fully protected. By making sure that all your jewelry is accurately appraised and insured, you’ll be assured that you are properly compensated if a loss does occur.

Frequently Asked Questions

Let us help! You can browse the topics below to find what you are looking for.

Who is the AGS?

The American Gem Society (AGS) was founded in 1996, and, like the GIA, it is recognized as one of the leading diamond grading laboratories. This laboratory provides what is known as the “Triple O” diamond grading document. Their mission is also to help protect the consumer.

Who is the GIA?

The non-profit Gemological Institute of America (GIA) is one of the leading diamond grading laboratories in the jewelry industry. Since 1931, the GIA has educated more than 300,000 jewelers around the world. Its mission is to protect the consumer by encouraging the development of professional and ethical standards. It has developed the most recognized diamond grading, known as the Four C’s (Carat, Color, Clarity, and Cut).