Diamond Jewelers — Fine Diamonds & Jewelry in Centereach, NY

Sunny beach scene with umbrella, beach ball, and chair
Holiday promotion — Diamond Jewelers
Person relaxing on a dock with a cocktail overlooking the water

Like Summer, Our sale will end soon!

The Only Thing That Sparkles
More Than Our Diamonds,
Is Our Reputation!

Almost 50 Years

Our Story

We are a family owned and operated business for almost 50 years, known for our expertise in Diamonds, gemstones, custom design and jewelry making. As your trusted source we have always helped generations of Long Islanders find the perfect pieces of jewelry or Diamonds to celebrate special moments in their lives.

Diamond Jewelers store exterior
Expert jewelry repair
Jeweler soldering a ring with torch

On-Site Craftsmen

Expert Repairs – Jewelers on Premises

Repairing your jewelry is a very special process. The Jewelers who work at our stores are experts at repairing all types of jewelry, whether it's silver, gold, platinium, or Diamond rings, bracelets, necklaces, earrings, and more. We use only quality materials to restore your valuable jewelry at an affordable price. Our skilled craftsmen will ensure that your precious item looks like new! We offer free estimates for our services and consultations. Visit us to see what we can do for you.

Ring Sizing & Reshaping
Prong Re-tipping & Retipping
Stone Setting & Replacement
Chain & Clasp Repair
Rhodium Plating & Polishing
Engraving
Bracelet & Necklace Repair
Watch Battery & Band Service

Diamonds Are Our Specialty

Natural diamonds - Lab grown diamonds - Colored diamonds - Certified diamonds - Fancy shaped diamonds

Round cut diamond
Oval cut diamond
Pear cut diamond
Princess cut diamond
Diamond
Diamond
Diamond

Diamond Jewelers is the best place to purchase Diamonds!

Our clients come to us, often by recommendation, because we provide exceptional service and we make dreams come true!

Our highly-trained professional staff will provide you with a personalized shopping experience to help you find the perfect Diamond.

We Offer Natural & Lab-Grown Diamonds

Diamonds Are Our Specialty, We Make Dreams Come True!

The Choice is Yours — Visit us for a wonderful and exciting experience learning about the many facets of Natural & Laboratory Grown Diamonds while we show you the many options available to you. We have the Diamond you are looking for.

Diamond proportions diagram

Diamond Education

Color

Diamond color grading chart D through M-Z

Carat Size

Diamond carat size reference chart 0.10ct to 2.50ct

Clarity

Diamond clarity grading chart IF through I3

Cut Shapes

Diamond cut shapes chart Emerald Marquise Pear Oval Round Princess Cushion Asscher Heart Radiant
Oval diamond engagement ring white gold halo
Oval diamond engagement ring white gold pave band
Oval diamond engagement ring yellow gold halo
Oval diamond engagement ring yellow gold pave band
Oval diamond engagement ring rose gold halo
Oval diamond engagement ring rose gold three stone
Round brilliant solitaire diamond engagement ring platinum
Oval cut diamond engagement ring white gold pave band
Cushion cut diamond halo engagement ring white gold
Emerald cut diamond solitaire engagement ring platinum
Pear shaped diamond engagement ring rose gold pave band
Round diamond three stone engagement ring platinum baguettes
Princess cut diamond solitaire engagement ring white gold
Radiant cut diamond hidden halo engagement ring yellow gold
Round diamond vintage art deco halo engagement ring milgrain
Round diamond split shank twisted pave engagement ring rose gold
Oval diamond bezel set engagement ring platinum minimalist
Round diamond double halo engagement ring white gold micro pave
Marquise diamond east-west engagement ring white gold pave band
Asscher cut diamond solitaire engagement ring platinum art deco
Round diamond cathedral solitaire engagement ring yellow gold
Cushion cut diamond floating halo engagement ring rose gold
Trillion cut diamond three stone engagement ring white gold
Round diamond twisted infinity band engagement ring platinum
Emerald cut diamond east-west bezel engagement ring yellow gold
Round diamond floral halo engagement ring white gold romantic

Symbol of Love

Engagement Rings — The universal symbol of love and commitment

Engagement rings are symbols of Joy, Love & Commitment. They represent unity, togetherness and everlasting love. Getting engaged is one of the most special moments in your life!

Looking for something specific? We carry dozens of styles — from classic solitaires to intricate halos, in every metal and diamond shape.

Show Me More Styles of Diamond Engagement Rings
Diamond halo engagement ring on driftwood
Round diamond engagement ring on driftwood
Floral cluster diamond engagement ring
Diamond engagement ring on display
Marquise diamond engagement ring on crystal

She Said Yes!

These happy couples have chosen to share their special moment with us. Thank you for allowing us to be part of such an important part of your new lives together.

We are honored to be part of your love story. From the moment you walk through our doors, our goal is to help you find the perfect symbol of your commitment — a diamond as unique and brilliant as the bond you share.

Whether you are just beginning your search or you know exactly what you want, our expert team is here to guide you every step of the way. We invite you to visit us and experience the Diamond Jewelers difference for yourself.

Congratulations to all our happy couples!

Wedding & Anniversary

Choose the Perfect Rings for your Wedding or Anniversary

Discover the Perfect Pair for the Perfect Pair!

Choosing wedding rings is a wonderful experience to share with your Fiancée. We will help you discover the perfect rings for you…the perfect couple! We have a huge collection of wedding rings, anniversary rings and eternity bands. We can create One-of-a-kind rings as unique as you both are!

Diamond eternity band white gold round brilliant channel set
Matching his and hers diamond wedding band set white gold milgrain
Wide baguette and round diamond channel set wedding band white gold
Delicate stackable pave diamond wedding band white gold
Vintage filigree milgrain diamond anniversary band white gold
Men's channel set diamond wedding band white gold brushed finish
Emerald cut bezel set diamond eternity anniversary band white gold
Oval diamond eternity anniversary band white gold prong set
Marquise diamond half eternity wedding band white gold channel set
Pear and round diamond alternating anniversary ring white gold
Cushion cut diamond bezel set eternity band white gold
Oval and baguette diamond alternating anniversary band white gold
Pear diamond eternity band white gold alternating up and down
Marquise diamond eternity ring white gold north-south set
Oval three stone diamond anniversary ring white gold cathedral setting

Crafted for You

Diamond Jewelry Designed for Love

Let our experienced staff assist you in selecting or designing unique jewelry and heirlooms you want for all the special moments in your life.

Diamond tennis bracelet white gold channel set
Diamond solitaire pendant necklace white gold
Diamond stud earrings platinum four-prong
Diamond halo pendant necklace yellow gold oval
Diamond bypass ring rose gold two stone
Diamond drop earrings white gold pear halo
Diamond cross pendant necklace white gold pavé
Diamond bangle bracelet yellow gold half eternity
Ladies diamond Star of David pendant white gold pavé

Color & Beauty

Kaleidoscope of Spectacular Color — Gemstones & Diamonds!

We offer an extensive collection of color in every type of jewelry from around the world. Including Diamonds, Rubies, Emeralds, Sapphires, Tanzanite, Topaz, Citrine, Amethyst, Garnet, Aquamarine, Onyx, Opal, Tourmaline, Blue Topaz, Pearl and so much more.

Colorful precious gemstones — green, yellow, orange and red on black background
Several gemstone rings displayed on driftwood branch
Ruby gemstone ring on driftwood
Opal jewelry collection rings on hand

Timepieces

About Our Watches

Diamond Jewelers offers an exquisite selection of high quality, pre-owned watches. Many with customized finishes.

Browse Our Collection of Pre-Owned Watches for Men & Women
Luxury pre-owned watch
Rolex Datejust with diamond bezel
Rolex Submariner vintage
Luxury pre-owned watch
Datejust stainless steel blue dial
Two-tone Datejust champagne dial
Rolex GMT-Master II
Rolex Datejust mother-of-pearl diamond dial
Cartier Roadster black dial automatic
Cartier Ballon Bleu stainless steel
Man in formal suit wearing a luxury watch
Men's diamond bracelet white gold channel set
Men's gold signet ring with diamond center stone
Men's diamond stud earrings bezel set white gold
Men's diamond wedding band white gold channel set
Men's heavy yellow gold Cuban link chain necklace
Men's diamond pinky ring white gold pavé
Men's two-tone yellow and white gold link bracelet
Men's diamond cross pendant necklace white gold pavé
Men's diamond Star of David pendant yellow gold chain
Men's luxury yellow gold diamond cufflinks
Men's yellow gold Cuban link chain with diamond accents
Men's white gold diamond tennis bracelet

Bold. Refined. Timeless.

Fine Jewelry Designed for Men

From bold diamond bracelets and Cuban link chains to classic signet rings and diamond studs — we carry a distinguished selection of fine jewelry crafted for men.

Whether you're looking for a meaningful gift or a personal statement piece, our experienced staff will help you find exactly what you're looking for — or create something entirely custom.

Vintage Collection

Estate Jewelry — Own a piece of history

We have an extraordinary vintage collection of unique, one of a kind, and rare pre-owned fine jewelry.

We Sell - Buy - Trade - Free consultations.

One-of-a-Kind Estate Jewelry
Art Deco diamond rings on white stands
Diamond filigree chandelier earrings on driftwood
Vintage cameo brooch with gold filigree
Antique-style diamond filigree estate ring
Ornate gold filigree diamond estate bracelet

Cash · Trade · Transform

We Buy Gold for Cash

Also Buying: Silver · Coins · Flatware · Gold Watches · Rolex Watches · Platinum · And All Precious Metals

Your old jewelry has real value — let us help you unlock it. Whether you want cash, a trade-in credit, or a completely fresh new piece, our expert jewelers are here to help.

We Buy Gold for Cash

Turn your unwanted gold, silver, and platinum jewelry into instant cash. We offer fair, competitive prices based on current market values — no appointment necessary.

Trade-Ins Welcome

Ready to upgrade? Trade in your existing jewelry and apply its value toward something new. We'll put that value to work for you.

Restyle Your Old Jewelry

Don't let sentimental pieces sit in a drawer. Our expert jewelers can transform your old jewelry into a stunning new design you'll love wearing every day.

We Buy — Sell — Trade
All Precious Metals

US silver coins collection
US gold coins collection
Silver bullion bars and coins
Silver bullion collection
Silver bars collection
Silver flatware collection
Scrap silver jewelry and silverware
Antique sterling silver tea service
Broken gold watches collection

Immediate Payment

We also buy jewelrylarge diamondscoinsgold wristwatches Gold pocket watches,  and broken or unwanted jewelry.

Stop in anytime — no appointment needed.  (631) 467-0603  ·  2257 Middle Country Rd, Centereach, NY

Find Us

Directions & Location

We are conveniently located on Middle Country Road in Centereach, NY. Stop in and see us — we would love to meet you.

Address

2257 Middle Country Rd.
Centereach, NY 11720

Store Hours

Tuesday – Saturday
10:00 AM – 5:00 PM
Sunday & Monday: Closed

Get Directions

Get In Touch

Contact Us

[email protected]

Have a question about jewelry, a repair, or a custom design? We'd love to hear from you!

Our Hours

Open 10am – 5pm Tuesday – Saturday

Closed Sunday & Monday

Jeweler on Premises

Wednesday – Saturday 10am – 5pm

Location

2257 Middle Country Rd.
Centereach, NY 11720

Phone: (631) 467-0603

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Financing

Synchrony Financial 12 Months Special Financing Available Every Day

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