When shopping for a diamond, whether for an engagement ring, earrings or pendant, a few important benchmarks should be taken into consideration: 

1/ The first and foremost is the cut of the diamond.    

                           

With Round, Cushion, Emerald Cut, along with the many additional options of shapes available, a finely cut diamond will display more brilliance and fire than a diamond that was cut to save carat weight from the original crystal.
A diamond that is cut too deep or too shallow, regardless of size, will lack the potential for the balance of brilliant white light and spectral colors that are available to the beholder of an ideal cut diamond.

Even diamonds of lower clarity grades and color will exhibit a better reflectivity as long as the proportions, polish and symmetry are given prominence. A cut grade such as the American Gem Society “Ideal” or the GIA “Excellent” grade will assure the wearer of this desired attribute.

2/ The Second important criterion for choosing a diamond is the color grade.

The standard color grades range from colorless “D” to fancy intense yellow.

Selecting a diamond which ranges from “G” color, (rare white) through “I” (slightly tinted white) will offer a near 100% amount of white light to be reflected back to the observer with only a minuscule amount of the crystal’s natural body color impacting the brilliance of the Diamond.

The choice of a near colorless diamond allows for the beauty of the stone to shine through without the steep price increase for a “D” or absolute colorless diamond.

3/ The third standard in choosing a diamond is the clarity grade.

The grade of flawless is the top quality grade through “I3” or Imperfect 3. A clarity grade of flawless means that under a 10 power magnification, no inclusions (clouds, pinpoints, crystal growth lines, etc.) are visible to the eye.

This grade might be desirable should the purchaser seek a diamond for investment purposes. However, for a beautiful wearable diamond, an above mid-point grade of anywhere from VS1 to SI1, (very slightly imperfect to Slightly imperfect) encompasses minor inclusions not usually visible to the naked eye which do not deter from the dynamics of a diamond’s brilliance.

Again, choosing a clarity grade VS-SI1, reduces the cost of the diamond without affecting the beauty of the diamond.

A stunning diamond can be chosen with an emphasis on the first criteria and modest deductions in grading on the remaining two benchmarks, gaining a reduction in cost while achieving a gem of quality.

In summary, when shopping for a diamond the proportional cut being the primary category of importance with color and clarity following.

Jeff Deleuse, Graduate & Certified Gemologist Appraiser

55 Broadway, Fairfax, Ca 94930

415-459-3739     deleuse@deleusejewelers.com

   

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“Janet, thank-you for everything you do. As I said before, you are truly an artist, and that is why it is so special buying jewelry from you.” Peter, Atlanta, GA

” Beauty, exquisite design, pleasant and personalized attention. These qualities have been constant in our 20 years of shopping with Janet and Jeff Deleuse – Two exceptionally talented and caring people. The Best!’ Helen P.,Belvedere

"This store has a very pleasant environment and Jeff and Janet are both kind, wonderful people. I used Jeff a few times for appraisals and he was very thorough and was happy to answer lots of questions. He uses scientific methods and tests rather than going solely by appearance as some jewelers will try to do, and his expertise is well respected. On one occasion, he even went out of his way to help expedite a deal for me. He has my highest recommendation. Suzanne T., San Rafael, CA

“Jeff is an incredible gemologist who knows everything there is to know about gem stones. He is a true professional and can be trusted. The quality of their work is impeccible and always consistent. I would recommend Deleuse Jewelers to anyone looking for a new, “bauble,” for themselves or someone special!” Terri B., Ross

"I have used Deleuse Jewelers for many years - for everything from purchasing jewelry to repairing jewelry to getting appraisals on jewelry. Their service and work is superb. I highly recommend them." Suzanne S., Tiburon, CA

"I purchased this beautiful chain from Janet Deleuse about 3 weeks ago. It was an online purchase so I was hoping I would be pleased. It exceeded my expectations as it was exactly as pictured. Delicate and perfectly crafted. Packing was very secure and shipping was quick. I would not hesitate to purchase from Deleuse again! Michele, New Jersey

“Janet and Jeff designed and crafted our wedding rings and did a great job. They worked with existing diamonds we had in an antique ruby cocktail ring, added the sapphire stone and made a beautiful pendant with the ruby. In addition, they designed earrings for our daughters. All are still in great shape today. They are easy to work with and very reliable and trustworthy.” Peg M., San Anselmo

Accreditation includes diplomas from the Gemological Institute of America and the American Gem Society and thirty years of experience.

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