Skip to primary navigationSkip to main contentSkip to footer
  • Toggle Search Menu
  • Toggle My Account Menu
  • Toggle My Wishlist
Marks of Design logo
  • BRIDAL
    Engagement Rings
    AsscherCushionEmeraldHeartMarquiseOvalPearPrincessRadiantRoundBridal SetsView All Engagement Rings
    Men's Wedding Bands
    18k White Gold Bands18k Yellow Gold Bands14k White Gold Bands14k Yellow Gold Bands14k White & Yellow Gold Bands14k Rose Gold BandsCeramic BandsCobalt Chrome BandsPlatinum BandsTitanium BandsTungsten BandsView All Men's Bands
    Women's Bridal Bands
    18K White Gold Bands18K Yellow Gold Bands18K Rose Gold Bands18K Two-Tone Gold Bands14K White Gold Bands14K Yellow Gold Bands14K Rose Gold Bands14K Two-Tone Gold Bands14K White & Rose Gold Bands14K Yellow & White Gold BandsPlatinum BandsView All Women's Bands
    Custom Bridal Jewelry
    Custom Bridal Jewelry
  • Diamonds
    Search Diamonds
    Round Princess Emerald Asscher Radiant
    Cushion Oval Pear Marquise Heart
    Diamond Jewelry & Watches
    Diamond Fashion RingsDiamond EarringsDiamond PendantsDiamond CharmsDiamond NecklacesDiamond BraceletsDiamond Men's JewelryDiamond WatchesDiamond Accessories
    Diamond Education
    The 4Cs of DiamondsCaring for Diamond JewelryDiamond Buying TipsLab Grown Diamond EducationAntwerp Diamonds
  • Custom
    Learn About Our Process
    View Our Previous Designs
    Make an Appointment
    Custom Bridal Jewelry
    Custom Bridal Jewelry
    Custom Fashion Jewelry
    Custom Fashion Jewelry
  • Jewelry
    Bridal
    Engagement Ring SettingsWomens Wedding BandsMens Wedding BandsBridal Sets
    Rings
    Diamond Fashion RingsColored Stone RingsPearl RingsSilver Rings
    Earrings
    Diamond EarringsColored Stone EarringsPearl EarringsSilver Earrings
    Pendants
    Diamond PendantsColored Stone PendantsPearl PendantsSilver PendantsReligious Pendants
    Charms
    Necklaces
    Diamond NecklacesGold NecklacesPearl NecklacesSilver NecklacesChains
    Bracelets
    Diamond BraceletsColored Stone BraceletsPearl BraceletsSilver BraceletsCharm Bracelets
    Mens Jewelry
    Mens RingsMens EarringsMens PendantsMens NecklacesMens Bracelets
    Watches
    Unisex WatchesWomens WatchesMens WatchesPocket Watches
    Gifts and Accessories
    Belt BucklesCard CasesClocksCollar StaysCufflinksJewelry SetsKeychainsMoney ClipsPinsPocket KnivesTie ChainsTie Bars and TacksWatch Chains
  • Designers
    Allison KaufmanAndrea CandelaBellarriBenchmarkBezame BridalCape CodChatham
    CitizenColor MerchantsDavid KordDovesGalateaGEMSONEGenesis Bridal
    Imperial PearlsINOXJorge RiveraKeith JackKelly WatersKiddie KraftMadison L
    MichouMidasNaledi CollectionNicole BarrOstbyeParleQuality Design Group
  • Events
  • Our Store
    Get to Know Us
    About UsBlogOur StaffStore AddressStore Events
    Service & Repair
    Cleaning & InspectionFinancingJewelry RepairsWatch RepairsView More Services
    Contact Us
    AppointmentsGive Us a CallSend Us a TextSend Us a Message
    Directions to Our Store
    Directions to Our Store
Marks of Design logo
Log In My Cart (0)
Marks of Design Shelton, CT

Lab-Grown Diamonds

Lab-grown diamonds are chemically, optically, and physically identical to naturally occurring diamonds and the hardest of all gemstones. We love using lab-created diamonds in engagement rings and tennis bracelets or other jewellery that sees heavy use since they retain their brilliance, fire and scintillation better than other gemstones. Colored gemstones, such as rubies, sapphires, and emeralds, aren’t as hard as diamonds, which are a 10 on the Mohs hardness scale. Diamonds can be worn for a lifetime and maintain their brilliance throughout. If you’re looking for a lasting gemstone choice for yourself or a loved one, created diamonds are one of your best options.

Shop Lab Grown Diamonds
Marks of Design Shelton, CT

We hold all of our created diamonds to the same standards as our mined diamonds, though you may find that the price comparison differs between the two. Labs have refined their processes to create higher-quality diamonds while keeping prices lower than natural diamonds. You can also find created colored diamonds in hues of yellow, blue, and pink in addition to clear.

Using lab-grown diamonds in engagement rings is a very popular recent trend for a variety of reasons. The cost and increased options at affordable prices make them a perfect option if you’re looking to tie the knot or find the perfect gift. The hardness of a diamond cannot be matched by moissanite, cubic zirconia, or any other diamond substitutes!

Grown Sustainably

MINED
DIAMONDS
GROWN
DIAMONDS

1000s of acres of soil is moved while mining diamonds

No soil movement

High air pollution

Negligible air pollution

Gallons of water used

Water usage is lower by a factor of 7

High risk work environment

High employee safety standards

Our Process

1SELECT DIAMOND SEED

Choose the best quality diamond seed. The diamond seed is placed on a metal disk.

2GROW THE DIAMOND

The diamond seed is placed into a specialized chamber. The diamond seed starts to grow.

3CUT THE DIAMOND

After 10-12 weeks, a diamond is created. The diamond is then roughly cut using a laser.

4POLISH THE DIAMOND

Diamonds are faceted into desired shapes by skilled diamond cutters using the same tools and techniques that are used for mined diamonds.

Shop Lab Grown Diamonds
Commonly Asked Questions We get a lot of questions about created diamonds. Here are answers to the most commonly asked questions: Marks of Design Shelton, CT

Commonly Asked Questions

We get a lot of questions about created diamonds. Here are answers to the most commonly asked questions:

Are lab-grown diamonds real diamonds?

Yes! Lab-grown gemstones are chemically identical to naturally occurring diamonds. They are graded the same way that natural diamonds are graded, using the 4 C’s (color, cut, clarity, and carat). Gemological labs with high-powered equipment and specially trained gemologists can tell you if you have a created diamond or a naturally occurring one, but to the naked eye and even under standard microscopes, it is nearly impossible to tell the difference.

Are they better than naturally occurring diamonds?

Not necessarily. Man-made gemstones are still subject to many of the same flaws and inclusions that natural gemstones are, and diamonds are no exception.

How are lab-grown diamonds made?

There are two main processes for producing diamonds in a lab. Both are quite technical procedures that require a few weeks to produce results. High Pressure, High Temperature (HPHT) mimics the way diamonds are formed naturally in the earth but speeds up the process exponentially. Chemical Vapor Deposition (CVD) creates these precious diamonds by using a chemical reaction to break carbon molecules apart and reform them into diamonds.

Are lab-grown diamonds different from engineered diamonds?

Lab-grown diamonds can go by many different names: engineered diamonds, created diamonds, cultured diamonds, and man-made diamonds all refer to the same process of creating a diamond without mining processes. However, if you see the terms “artificial” or “synthetic” when referring to a gemstone, it might not be a diamond at all. Cubic Zirconia, or CZ, are man-made diamond look-alikes that do not have the same chemical structure as a diamond. Always ask your jeweller for specifics when purchasing fine jewelry to ensure you understand the type of product you’re looking at!

If you’re interested in learning more about lab-grown diamonds, Grogan Jewelers can assist you. Visit us at any of our three locations today, or create an appointment to go over your diamond options.

 
CONTACT US
  •  Call Us (203) 924-0030
  •  Text Us (203) 924-0030
  •  Email Us Here
VISIT US
389 Bridgeport Ave., Suite 103
Shelton, CT 06484
Store Hours
Tues-Fri: 10am - 5:30pm
Sat: 10am - 3pm
Sun: CLOSED
Mon: CLOSED
Jewelry
  • Bridal
  • Rings
  • Earrings
  • Pendants
  • Charms
  • Necklaces
  • Bracelets
  • Mens Jewelry
  • Watches
  • Gifts and Accessories
Store Menu
  • About Us
  • Our Staff
  • Store Events
  • Store Services
CUSTOMER CARE
  • Create an Account
  • Orders
  • My Account
  • Financing
  • My Wishlist
Subscribe to Our Newsletter
Follow Us
    • GIA Certified
    • Jewelers Mutual
    • RJO Member

    © 2025 Marks of Design. All Rights Reserved. Website designed, maintained, and hosted by  Punchmark.

    • Privacy Policy
    • Terms & Conditions
    • Accessibility Statement

    My Bag

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