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Store hours

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Store hours

Monday – Friday 10am – 7pm

Saturday 10am-5:30pm

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Over 100 Years in Business

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Over 100 Years in Business

Leo Marks began our journey in downtown Toledo in 1916. Leo Marks Jewelers remains a proprietorship to this day and prides itself on the time and personal attention we are able to give each and every client that comes to visit.

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Lifetime Warranty

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Lifetime Warranty

Now that your happily ever after has begun, we want to keep your precious piece of jewelry looking like the day you purchased it. With the Leo Marks promise you can rest assured that we are here for the lifetime of your piece. Whether it be a simple cleaning or repair of a prong, Leo Marks jewelers is here for your every need.

Warranty Coverage

  • Free stone check/tightening of prongs
  • Free prong replacement or re-tipping
  • Free head replacement if needed
  • Free annual polishing/refinishing for the life of the ring
  • Free annual rhodium plating for white gold
  • Free Lifetime appraisal service
  • Free lifetime stone replacement for diamonds in your setting (excludes center diamond) up to 1/5 carat
  • Free sizing for a lifetime*

Leo Marks Jewelers will provide an insurance appraisal for your purchased jewelry to insure your ring against loss, theft, or unforeseen damages.

*Lifetime Sizing is limited to once per year

*Excludes pendant chains

*All warranty coverage is voided if alterations are made by a third party

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Lifetime Diamond Upgrade

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Lifetime Diamond Upgrade

If at any point during the first year of your purchase you feel the need to return your diamond (center stone only), don't worry, you're covered. Leo Marks Jewelers will gladly buy back your diamond at 65% of the original purchase price. We strive to offer our customers the best guarantees in the country. We want you covered from every angle, and we're happy to provide our customers with this great program.

I should you want to upgrade your diamond at any time in the future (center stone only) you can. Leo Marks Jewelers will buy your diamond back at 65% of the original purchase price to put towards any diamond of your choosing. Re-mounting and any needed work on the existing ring are included! We want you covered from every angle and we’re happy to provide our clients with this great program.

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Diamond Education

Diamond Education

THE 4Cs

the 4Cs of Diamond Quality is the universal method for assessing the quality of any diamond.

  • Diamond COLOR
  • Diamond Clarity
  • Diamond CUT
  • Diamond carat weight

DIAMOND COLOR

Diamond Color Actually Means Lack of Color The diamond color evaluation of most gem-quality diamonds is based on the absence of color. A chemically pure and structurally perfect diamond has no hue, like a drop of pure water, and consequently, a higher value. GIA's D-to-Z diamond color-grading system measures the degree of colorlessness by comparing a stone under controlled lighting and precise viewing conditions to masterstones stones of established color value.

GIA's diamond D-to-Z color-grading scale is the industry's most widely accepted grading system. The scale begins with the letter D, representing colorless, and continues, with increasing presence of color, to the letter Z. Many of these color distinctions are so subtle that they are invisible to the untrained eye; however, these distinctions make a very big difference in diamond quality and price.

 

 

DIAMOND CLARITY

Diamond Clarity Refers to the Absence of Inclusions and Blemishes Natural diamonds are the result of carbon exposed to tremendous heat and pressure deep in the earth. This process can result in a variety of internal characteristics called 'inclusions' and external characteristics called 'blemishes.'

The GIA Diamond Clarity Scale has 6 categories, some of which are divided, for a total of 11 specific grades.

  • Flawless (FL)

    No inclusions and no blemishes visible under 10x magnification

  • Internally Flawless (IF)

    No inclusions visible under 10x magnification

  • Very, Very Slightly Included (VVS1 and VVS2)

    Inclusions so slight they are difficult for a skilled grader to see under 10x magnification

  • Very Slightly Included (VS1 and VS2)

    Inclusions are observed with effort under 10x magnification, but can be characterized as minor

  • Slightly Included (SI1 and SI2)

    Inclusions are noticeable under 10x magnification

  • Included (I1, I2, and I3)

    Inclusions are obvious under 10x magnification which may affect transparency and brilliance

DIAMOND CUT

A Diamond's Cut Unleashes Its Light. Diamonds are renowned for their ability to transmit light and sparkle so intensely. We often think of a diamond's cut as shape (round, emerald, pear), but a diamond's cut grade is really about how well a diamond's facets interact with light.

Precise artistry and workmanship are required to fashion a stone so its proportions, symmetry, and polish deliver the magnificent return of light only possible in a diamond.

A diamond's cut is crucial to the stone's final beauty and value. And of all the diamond 4Cs, it is the most complex and technically difficult to analyze.

To determine the cut grade of the standard round brilliant diamond - the shape that dominates the majority of diamond jewelry – GIA calculates the proportions of those facets that influence the diamond's face-up appearance. These proportions allow GIA to evaluate how successfully a diamond interacts with light to create desirable visual effects such as:

Brightness: Internal and external white light reflected from a diamond

Fire: The scattering of white light into all the colors of the rainbow

Scintillation: The amount of sparkle a diamond produces, and the pattern of light and dark areas caused by reflections within the diamond

GIA's diamond cut grade also takes into account the design and craftsmanship of the diamond, including its weight relative to its diameter, its girdle thickness (which affects its durability), the symmetry of its facet arrangement, and the quality of polish on those facets.

The GIA Diamond Cut Scale for standard round brilliant diamonds in the D-to-Z diamond color range contains 5 grades ranging from Excellent to Poor.

DIAMOND CARAT WEIGHT

Diamond carat weight is the measurement of how much a diamond weighs. A metric "carat" is defined as 200 milligrams.

Each carat can be subdivided into 100 'points.' This allows very precise measurements to the hundredth decimal place. A jeweler may describe the weight of a diamond below one carat by its 'points' alone. For instance, the jeweler may refer to a diamond that weighs 0.25 carats as a 'twenty-five pointer.' Diamond weights greater than one carat are expressed in carats and decimals. A 1.08 carat stone would be described as 'one point oh eight carats.'

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