Skip to primary navigationSkip to main contentSkip to footer
“We Are Your Trusted Jeweler for Over 30 Years”
  • Toggle Search Menu
Steve Lennon & Co Jewelers  logo
  • Engagement
    • Shop Engagement Rings
    • Browse Loose Diamonds
    • Learn About Ring Settings
    • Learn About Diamonds
  • Wedding Bands
    • Ladies Wedding Bands
    • Men's Wedding Bands
  • Designers
    • A. Jaffe
    • Ammara Stone
    • Citizen
    • Forge
    • Samuel B.
    • Vahan
    • Vlora
    • Alex Woo
    • Ania Haie
    • Anna Beck
    • ArtCarved
    • Benchmark
    • Dee Berkley
    • Fana
    • Freida Rothman
    • Goldman
    • I. Reiss
    • Jude Frances
    • Madison L
    • Mastoloni
    • Meira T.
    • Michele Watch
    • Monica Rich Kosann
    • Phillips House
    • Princesse Legacy Pearls
    • Shy Creation
    • Sydney Evan
    • Tantalum
    • Triton
  • Jewelry
      Lab Gown Jewelry
      Lab Grown NecklacesLab Grown EarringsLab Grown Bracelets
      Rings
      Womens Engagement RingsWomens Wedding BandsDiamond Fashion RingsColored Stone RingsSilver RingsPearl RingsChildren's RingsFashion RingsWedding BandsEternity BandsDiamond RingsDiamond Engagement RingsDiamond Three Stone RingsDiamond Eternity RingsMen's Diamond Wedding BandsDiamond Anniversary BandsGemstone Rings
      Earrings
      Diamond StudsDiamond Fashion StudsDiamond Hoops & HuggiesDiamond Fancy EarringsColored Stone EarringsGold StudsGold Hoops & HuggiesGold Fancy EarringsSilver StudsSilver Hoops & HuggiesSilver Drop EarringsPearl EarringsEar Cuffs & Ear CharmsChildren's EarringsDiamond EarringsHoop EarringsStud EarringsDiamond Hoop Earrings
      Necklaces
      Diamond Classic Necklaces & PendantsDiamond Fashion Necklaces & PendantsDiamond CrossesColored Stone NecklacesGold Necklaces/PendantsSilver Necklaces/PendantsPearl NecklacesLocket PendantsCharms & PendantsChainsChildren's NecklacesDiamond NecklacesGemstone Necklaces
      Bracelets
      Diamond Tennis BraceletsDiamond Bracelets & BanglesColored Stone Bracelets & BanglesGold Bracelets & BanglesSilver Bracelets & BanglesPearl BraceletsOn Trend Fashion BraceletsChildren's BraceletsBangle BraceletsDiamond BraceletsDiamond Bangle BraceletsGemstone Bangle Bracelets
      Men's
      Men's Wedding BandsMen's Fashion RingsMen's NecklacesMen's Gold BraceletsMen's Silver BraceletsMen's On Trend BraceletsRing Inserts
      Watches
      Womens WatchesWomens Watch Straps
    • Diamond Pendants
  • Timepieces
  • Our Store
    • About Us
    • Our Blog
    • Our Staff
    • Repair Services
    • Financing
    • Jewelry Insurance
    • Custom Design
    • In-House Layaway
  • Contact Us
  • My AccountToggle My Account Menu
  • WishlistToggle My Wishlist
  • My CartToggle Shopping Cart Menu
  1. Home
  2. Education
  3. Diamonds

Learn About Diamonds

The Four Cs of Diamonds

Our Four C's of Diamonds guide can help you decide on the most important factors when shopping for a diamond.

  • Carat
  • Cut
  • Color
  • Clarity

The Carat Weight

The word carat derives from the word carob, a Mediterranean seed, which has an extremely consistent weight for measuring. The greater the carat weight, the rarer, and more valuable the diamond becomes. Five metric carats weighs exactly 1 gram.

Some people want the largest diamond possible. If size is a priority, we at Steve Lennon & Co Jewelers can help you classify the proper cut, color and clarity to fit your budget economically, and fit your jewelry beautifully. Many of our engagement rings can fit diamonds up to 5.00 carats, but each ring has different size constraints based on its size and the type of setting. Prong settings can be manipulated to fit virtually any size diamond, but tension-set diamonds and bezel set diamonds have more limitations on size.

The Cut

The true definition of cut is the quality of the proportions and symmetry of the diamond. Your diamond's proportions make a vast difference on how brightly your diamond shines. An 'ideal cut' diamond is one that allows the maximum amount of light to return through the top of the diamond, which takes into consideration the depth, table size, crown height and angle, girdle thickness and more. Our diamond professionals will be happy to assist you in selecting the best diamond cut.

After a rough diamond is mined, it is evaluated to determine its best possible cut, in order to maintain the maximum clarity, color, and carat weight. The term 'cut' is often confused with diamond 'shape', such as round brilliant or princess cut.

Excellent

This is the rarest cut grade and reflects the most light.

Very Good

This cut grade reflects nearly as much light as an Excellent cut grade, but for a lower price.

Good

This cut grade reflects most of the light that enters the diamond, but not as much as a Very Good cut grade.

Fair

This cut grade may appear dull or even glassy, and is very inexpensive.

Poor

This cut grade is not carried by Steve Lennon & Co Jewelers and is typically not recommended.

Excellent
Very Good
Good
Fair
Poor
Not carried by Steve Lennon & Co Jewelers

MORE DIAMONDS

The Color

Color is one of the more noticeable attributes of a diamond and has a heavy impact on the price of the stone. Diamonds range from colorless to yellow or light brown, and are sometimes found in a spectrum of fancy colors, including yellow, blue, and even red diamonds. The less color, the rarer the diamond. After 'Z' on the color scale, diamonds become fancy yellow, which cost more because of their rarity.

Z-N
M-K
Noticeable Color
J
I
H
G
Near Colorless
F
E
D
Colorless
Z-N
M-K
J
I
H
G
F
E
D
Noticeable Color
Near Colorless
Colorless

The Clarity

Diamonds are composed of mostly carbon. During the heating process, other elements become trapped inside, giving each diamond its own unique fingerprint. These inclusions help identify the clarity of your diamond. All diamonds are viewed through a 10x magnification lens by diamond graders.

Flawless

No inclusions or blemishes are visible to a skilled grader.

Internally Flawless

No inclusions and only blemishes are visible to a skilled grader.

Very Very Slightly Included

Inclusions are difficult for a skilled grader to see.

Very Slightly Included

Inclusions are clearly visible but can be characterized as minor.

Slightly Included

Inclusions are noticeable to a skilled grader.

Included

Inclusions are obvious and may affect transparency and brilliance.

FFlawless
IFInternally Flawless
VVS1
VVS2
Very Very Slightly Included
VS1
VS2
Very Slightly Included
SI1
SI2
Slightly Included
I1
I2
I3
Included

MORE DIAMONDS

Shop Loose Diamonds

Steve Lennon & Co Jewelers
Village of New Hartford, NY
23 Genesee Street
New Hartford, NY 13413
(315) 927-8000
Store Information
Store Hours
Monday:Closed
Tues - Fri:10:00am - 6:00pm
Saturday:10:00am - 3:00pm
Sunday:Closed
Our Store
  • About Us
  • Blog
  • Our Staff
  • Product Care for Jewelry
  • Repair Services
  • Financing
  • Custom Design
  • In-House Layaway
Join Our Newsletter

Sign up for special offers and discounts

Follow Us
  • Synchrony Bank
  • Continental Buying Group
  • Preferred Jewelers
  • Jewelers Board of Trade
  • Jewelers Mutual

© 2025 Steve Lennon & Co Jewelers . All Rights Reserved. Website designed, maintained, and hosted by Punchmark. Accessibility Statement.

Learn how we use cookies in our Privacy Policy or manage cookie preferences.