Skip to primary navigationSkip to main contentSkip to footer
  • (781) 769-5470 (781) 769-6644
    1135 Washington St.
    Norwood, MA 02062
  • Toggle Search Menu
Keegan's Jewelers logo
  • Toggle Search Menu
  • Toggle My Account Menu
  • Toggle My Wishlist
  • Toggle Shopping Cart Menu
  • Engagement
    Engagement Rings
    Diamond Engagement RingsLoose Diamond SearchChoosing The Right SettingDiamond Education
    Men's Wedding Bands
    Men's Diamond Wedding BandsMen's Gold Wedding BandsAlternative Wedding Bands
    Women's Wedding Bands
    Women's Diamond Wedding BandsWomen's Plainum Wedding BandsWomen's Gold Wedding Bands
    Create Your Own
    Create Your Own

    Explore All Engagement
  • Designers
    Allison KaufmanBering TimeCarla CorporationChatham
    CitizenGems OneKeegan's CustomLeStage
    Malo BandsMarathonOstbyePre-Owned Omega
    Pre-Owned RolexRembrandt CharmsSeiko

    Designers
  • Jewelry
    Rings
    Diamond RingsGold RingsCladdagh RingsColored Stone RingsPearl RingsSilver RingsMen's Gold RingsMen's Claddagh Rings
    Chains
    Gold ChainsSilver Chains
    Earrings
    Diamond EarringsGold EarringsColored Stone EarringsPearl EarringsSilver Earrings
    Necklaces
    Diamond NecklacesGold NecklacesColored Stone NecklacesPearl NecklacesSilver Necklaces
    Pendants and Charms
    Diamond PendantsGold Pendants and CharmsColored Stone PendantsPearl PendantsSilver Charms
    Bracelets
    Diamond BraceletsGold BraceletsColored Stone BraceletsPearl BraceletsSilver Bracelets
    Special Collections
    Convertible JewelryCape Cod JewelryReligious JewelryMedical JewelryChildren's Jewelry
    Create Your Own
    Create Your Own

    Explore All Jewelry
  • Watches
    Pre-Owned Rolex
    Pre-Owned Rolex
    Bering Time
    Bering Time
    Pre-Owned Omega
    Pre-Owned Omega
    Citizen
    Citizen
    Seiko
    Seiko
    All Watches
    All Watches

    Explore All Watches
  • New Arrivals
    • Seiko Watches
  • Services
  • Our Store
    About Us
    About Us
    Testimonials
    Testimonials
    Store Policies
    Store Policies
    Appointments
    Appointments

    Explore All Our Store
  • Contact Us
  1. Home
  2. Education
  3. Gemstones

Learn About Gemstones

Gemstones

Learn about gemstones and birthstones by using our Gemstone Guide.

  • Search by Month
  • Search by Stone Type
  • January
  • February
  • March
  • April
  • May
  • June
  • July
  • August
  • September
  • October
  • November
  • December
January Birthstone - Garnet

Garnet comes from the Latin word granatus, meaning grain. Garnet is mostly mined in Southeast Asia, Brazil, and Africa. Occurring in every color except blue, the garnet is a versatile stone, appropriate for a multitude of applications and occasions.

Shop Garnet Jewelry

February Birthstone - Amethyst

Amethyst is a member of the quartz family, and ranges in color from light to deep purple. Amethyst is derived from the Greek word emthystos meaning not drunk. The ancient Greeks and Romans made drinking cups out of Amethyst believing that it would prevent intoxication.

Shop Amethyst Jewelry

March Birthstones - Aquamarine, Bloodstone

Aquamarine

Aquamarine, from Latin “aqua marina” or “water of the sea”, was named because of its blue or turquoise color. In the U.S., Aquamarine can be found in central Colorado and Wyoming.

Shop Aquamarine Jewelry


Bloodstone

Also known as heliotrope, Bloodstone is a deep-green variety of chalcedony flecked with vivid red spots of iron oxide that resemble droplets of blood—hence its dramatic name. Revered by the Greeks for its supposed power to turn the sun red at sunset, and by medieval Europeans as a talisman to staunch bleeding and bolster courage, Bloodstone has long been linked to vitality and protection. Major deposits are found in India, Brazil, Australia, and the United States, where its toughness and earthy beauty make it popular for cabochons, intaglios, and men's signet rings.

Shop Bloodstone Jewelry

April Birthstone - Diamond

The word Diamond comes from the Greek word adamas, meaning unbreakable, or unalterable. Diamonds are composed of a single element, and are the purest of all the gemstones. The Diamond is the ultimate symbol of love, and is said to symbolize strength, and enhance relationships.

Shop Diamond Jewelry

May Birthstone - Emerald

Emeralds can range in color from light to dark green. Its name comes from the Greek word smaragdos meaning green gem. Emeralds from Columbia are generally considered the most valuable.

Shop Emerald Jewelry

June Birthstones - Pearl, Moonstone, Alexandrite

Pearl

When thinking of the Pearl the color white usually comes to mind, but you can find pearls in black, gray, blue, yellow cream, lavender and mauve. When purchasing a Pearl you want to consider the surface, luster, color, and shape. The ideal pearl is perfectly round and smooth, but there are many shapes of pearl.

Shop Pearl Jewelry


Moonstone

A stone of unearthly beauty, the inner glow is due to the scattering of light between microscopic layers of feldspar and other minerals. It is sometimes attributed to have feminine energies.

Shop Moonstone Jewelry


Alexandrite

Named for Czar Alexander II, which is very fitting as it was discovered in Russia's Ural Mountains in 1830. The same stone can appear to shift in hue between Purple and Sapphire Blue depending on the light it is exposed to.

Shop Alexandrite Jewelry

July Birthstone - Ruby

The word Ruby is from the Latin ruber, meaning red. The ruby is pink-red in color. The Ruby is extremely hard, and second only to the diamond in hardness. The ruby is one of the four precious stones, along with sapphire, emerald, and diamond.

Shop Ruby Jewelry

August Birthstones - Peridot, Spinel, Sardonyx

Peridot

Peridot is one of the few gemstones that occur in only one color, an olive green. The most valued color is a dark olive-green.

Shop Peridot Jewelry


Spinel

Referred to in ancient Sanskrit as “the daughter of Ruby”, this stone comes in a similar range of colors and styles, though it also boasts a more modest pricing.

Shop Spinel Jewelry


Sardonyx

Sardonyx is a banded member of the quartz family that layers reddish-brown sard with contrasting white or black onyx. The name blends the Greek words sard (a brownish-red stone once sourced near Sardis in ancient Lydia) and onyx (meaning “claw” or “fingernail,” a nod to its translucence). prized by the Romans for cameos, seals, and amulets, Sardonyx was thought to grant courage, eloquence, and protection in battle. Today it is mined primarily in India, Brazil, Madagascar, and Uruguay, and its striking stripes continue to make it a favorite for carved jewelry and ornamental objects.

Shop Sardonyx Jewelry

September Birthstone - Sapphire

Sapphire is from the Greek word sappheiros, meaning blue stone. Although blue is the most well-known color for sapphires, sapphires are made up of any color of corundum except for red, which are rubies.

Shop Sapphire Jewelry

October Birthstone - Opal, Tourmaline

Opal

97% of the world's Opal is from Australia. Opals fluctuate in color and are often multi-colored. The most valuable is black.

Shop Opal Jewelry


Tourmaline

Available in a wide range of colors, Tourmaline’s name derives from the Sinhalese name, Turamali, which roughly translates to "stone with mixed colours". Occasionally they are discovered with a green to red color striation, which is referred to as "Watermelon Tourmaline".

Shop Tourmaline Jewelry

November Birthstone - Citrine, Topaz

Citrine

Citrine is a premier stone of manifestation, imagination, and personal will. Carrying the power of the sun, it is warm and comforting, energizing and life giving. It stimulates the chakras like the sunlight of spring, clearing the mind and stirring the soul to action.

Shop Citrine Jewelry


Topaz

Naturally golden brown to yellow, it can appear in a variety of colors, but previously the name Topaz was used to refer to any yellowstone. Interestingly there is an English superstition that Topaz cured lunacy.

Shop Topaz Jewelry

December Birthstone - Blue Topaz, Turquoise, Zircon, Tanzanite

Blue Topaz

Blue Topaz is a stone of peacefulness, calming to the emotions, and ideal for meditation and connecting with spiritual beings. It is a natural magnifier of psychic abilities, assisting those who wish to attune to inner guidance, as well as those who serve others through readings or spiritual healing.

Shop Blue Topaz Jewelry


Turquoise

An opaque blue-to-green mineral, Turquoise has long been used to ornament clothing, tribal masks, and worn as jewelry. The iconic burial mask of Tutankhamun was inlaid with turquoise as well as other stones. It was long thought to be a holy stone that could bring the wearer good fortune.

Shop Turquoise Jewelry


Zircon

Though most famously of a sky blue color, it can be nearly every color of the rainbow, from earth tones to near colorless, Zircon's rarity and relative affordability make it a prime choice for fashion jewelry.

Shop Zircon Jewelry


Tanzanite

Naturally occurring only in the Tanzanian Mountains of Africa, this stone comes in a variety of shapes that can fluctuate between Lavender and Ocean Blue.

Shop Tanzanite Jewelry

  • Alexandrite
  • Amethyst
  • Aquamarine
  • Diamond
  • Black Diamonds
  • Lab Grown Diamonds
  • Emerald
  • Garnet
  • Lapis Lazuli
  • Moonstones
  • Morganite
  • Onyx
  • Opal
  • Pearl
  • Peridot
  • Rhodolite
  • Ruby
  • Sapphire
  • Spinel
  • Tanzanite
  • Topaz
  • Tourmaline
  • Turquoise
  • Zircon
Alexandrite

Named for Czar Alexander II, which is very fitting as it was discovered in Russia’s Ural Mountains in 1830. The same stone can appear to shift in hue between Purple and Sapphire Blue depending on the light it is exposed to.

Shop Alexandrite Jewelry

Amethyst

A variety of quartz often used in jewelry, and was thought by the ancient Greeks to protect the owner from drunkenness, and even went so far as to carve drinking vessels from the stone.

Shop Amythest Jewelry

Aquamarine

A beautiful blue or cyan stone, commonly from Sri Lanka. The largest Aquamarine ever found weighed over 110kg in Brazil.

Shop Aquamarine Jewelry

Diamond

Though often thought of as a colorless stone, a truly colorless diamond is a rarity. Usually diamonds have a light yellow tint, sometimes brown. Unique in that it's the only gem comprised of a single element carbon.

Shop Diamond Jewelry

Black Diamonds

This stone was considered in Medieval Times to have the ability to restore the love back to the relationship of a married couple. These Diamonds are black due to the vast quantity of inclusions in its Carbon structure.

Shop Black Diamond Jewelry

Lab Grown Diamonds

These man-made diamonds are identical to the naked eye to a Natural Diamond that is created over billions of years below the surface of the Earth. In recent years, there’s been a large shift towards Lab Grown Diamonds due to their having a significantly smaller effect on the Earth.

Shop Lab Grown Diamond Jewelry

Emerald

A true, deep green color, the emerald is a striking stone alleged to give its wearer a quicker wit and a higher IQ. These rare gems are often carved into a rectangular step cut, which is known as the emerald cut.

Shop Emerald Jewelry

Garnet

Available in a variety of natural colors with reddish shades being the most common, the garnet is a fairly common gemstone most commonly used in the Late Antique Roman world, and were often inlaid in gold jewelry.

Shop Garnet Jewelry

Lapis Lazuli

It’s name means blue stone, and was once considered to be a powerful aphrodisiac. Long ago it was used to create the vibrant blue skies in Renaissance Paintings.

Shop Lapis Jewelry

Moonstones

A stone of unearthly beauty, the inner glow is due to the scattering of light between microscopic layers of feldspar and other minerals. It is sometimes attributed to have feminine energies.

Shop Moonstones Jewelry

Morganite

Commonly seen in pink and peach, Morganite usage has skyrocketed in recent years for use in fashion jewelry.

Shop Morganite Jewelry

Onyx

This volcanic product is naturally available in a multitude of colors, though most famously black, with a rich black color that is used in a variety of jewelry types.

Shop Onyx Jewelry

Opal

The national gemstone of Australia, the Opal can appear in a variety of colors, with black being the rarest. A wonder of nature is the fire opal which can include colors that seem to flicker between yellow to orange to red to green.

Shop Opal Jewelry

Pearl

A hard object that grows in the soft tissue of a shelled mollusk. The ideal pearl is perfectly round and smooth in shape, but are common in a variety of other shapes. Pearls are seen as a classy alternative to typical gemstones, and are frequently worn with nearly every level of classiness.

Shop Pearl Jewelry

Peridot

Peridot is simply gem-quality Olivine, and only occurs in one color: olive-green. Olivine tends to be rather common, however Peridots are rather rare and can be found in odd places such as lavas and meteorites.

Shop Peridot Jewelry

Rhodolite

A relatively inexpensive pink stone, Rhodolite is commonly discovered with blank manganese veins running through it. It’s name derives from the Greek word rhodos, which means "rose colored".

Shop Rhodolite Jewelry

Ruby

The word ruby comes from ruber, which is Latin for red, and as such, Rubies are almost always red in color. Rubies and Pink Sapphires are commonly confused, and a Ruby must meet a minimum color saturation in order to be called a true ruby.

Shop Ruby Jewelry

Sapphire

A gem long-associated with romance and royal leanings, Princess Di received a blue sapphire engagement ring from Prince Charles back in 1981. Despite a common misconception, not all sapphires are blue. Green, violet-blue, yellow, orange, pink and purple hued stones are known as “fancy” sapphires and range from very light to very dark in saturation.

Shop Sapphire Jewelry

Spinel

Referred to in ancient Sanskrit as “the daughter of Ruby”, this stone comes in a similar range of colors and styles, though it also boasts a more modest pricing.

Shop Spinel Jewelry

Tanzanite

Naturally occurring only in the Tanzanian Mountains of Africa, this stone comes in a variety of shapes that can fluctuate between Lavender and Ocean Blue.

Shop Tanzanite Jewelry

Topaz

Naturally golden brown to yellow, it can appear in a variety of colors, but previously the name Topaz was used to refer to any yellowstone. Interestingly there is an English superstition that Topaz cured lunacy.

Shop Topaz Jewelry

Tourmaline

Available in a wide range of colors, Tourmaline’s name derives from the Sinhalese name, Turamali, which roughly translates to "stone with mixed colours". Occasionally they are discovered with a green to red color striation, which is referred to as "Watermelon Tourmaline".

Shop Tourmaline Jewelry

Turquoise

An opaque blue-to-green mineral, Turquoise has long been used to ornament clothing, tribal masks, and worn as jewelry. The iconic burial mask of Tutankhamun was inlaid with turquoise as well as other stones. It was long thought to be a holy stone that could bring the wearer good fortune.

Shop Turquoise Jewelry

Zircon

Though most famously of a sky blue color, it can be nearly every color of the rainbow, from earth tones to near colorless, Zircon's rarity and relative affordability make it a prime choice for fashion jewelry.

Shop Zircon Jewelry

Keegan's Jewelers
Norwood Location
1135 Washington Street
Norwood, MA 02062
(781) 769-5470
Store Information
Falmouth Location
205 Worcester Ct
Falmouth, MA 02540
1(508) 548-8300
Store Information
Norwood Hours
Mon - Wed:10:00am - 5:00pm
Thursday:10:00am - 5:30pm
Friday:10:00am - 5:00pm
Saturday:10:00am - 4:00pm
Sunday:Closed
Falmouth Hours
Monday:Closed
Tues - Wed:10:00am - 5:00pm
Thursday:10:00am - 5:30pm
Friday:10:00am - 5:00pm
Saturday:10:00am - 3:00pm
Sunday:Closed
Jewelry
  • Engagement Rings
  • Women's Wedding Bands
  • Men's Wedding Bands
  • Rings
  • Earrings
  • Necklaces
  • Pendants and Charms
  • Bracelets
  • Chains
  • Watches
  • Special Jewelry
Designers
  • Allison Kaufman
  • Bering Time
  • Carla Corporation
  • Chatham
  • Citizen
  • Gems One
  • Keegan's Custom
  • LeStage
  • Malo Bands
  • Marathon
  • Ostbye
  • Pre-Owned Omega
  • Pre-Owned Rolex
  • Rembrandt Charms
  • Seiko
Our Store
  • About Us
  • Store Policies
  • Store Services
  • Privacy Policy
  • Terms and Conditions
Schedule an Appointment

Appointments and private showings available during & outside of regular business hours.

Newsletter

Enter your email below to sign up for our newsletter.

Follow Us

© 2025 Keegan's 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.