Rare Paraiba and Diamond Rings from Coast at Costello Jewelry Company of Chicago

rare paraiba halo engagement fashion ring coast diamond

These days we are all intrigued by rare. We want to be different. Express our love in a unique way. When buying the gift of fine jewelry that is rare, unique or different you need a “real” jeweler. Over fifty years ago Joe Costello founded Costello Jewelry Company in Chicago with the mantra of Costello Jewelry Company is a “real” jeweler. They have a staff of well trained and experienced craftsmen, a team of GIA certified Gemologists and customer service associates who are sincere and truly desire to meet your jewelry needs. Find something rare for your loved one with the “real” Costello Jewelry Company of Chicago, our Coast Diamond Retailer of the Week.

Rare Paraiba

A Paraiba tourmaline is instantly recognized by its rare glow that radiates from the inside out. It was discovered in Paraiba, Brazil about 30 years ago and more recently in Mozambique and Nigeria, making them more accessible to you. They are hand-mined so as to protect the stone from damage. Larger Paraiba gemstones are rarer and thus extremely costly per carat. The Coast 5.20 CT oval Paraiba ring in our featured image is surrounded by diamonds and set in platinum (LSK10101-PAR).

The Paraiba is the perfect gift for a love that is rare.

coast diamond paraiba halo ring (lck20114-par) rare

This Coast Diamond halo engagement ring (LCK20114-PAR) is crowned with a Paraiba stone and accentuated with a halo of fishtail set diamonds.

The Coast Diamond Signature Color Collection has exquisite Paraiba ring, pendant, and earring designs. Visit Costello Jewelry Company of Chicago to learn more about the Paraiba and Coast Diamond.

What else is rare and popular at Costello’s?

Rare Brilliance

Coast Diamond band WC20015 0.50ctw micro-prong setting Allure Collection

The delicately set diamonds of the Coast Diamond one-half carat diamond band (WC20015) are brilliant. The brilliance is created by the close setting of diamonds in micro-prongs.

Rare Design

coast diamond 2 ct halo engagement ring lc10028 3 row diamond band

This unique Coast Diamond 2 CT round halo engagement ring (LC10028) features three rows of diamonds (0.52 ctw) on the shoulders of the ring, the center row rising to meet the halo. Excellent craftsmanship and imagination combine to create this remarkable design.

Costello Jewelry Co. has two beautiful showrooms for you to find your rare and wonderful gift of Coast Diamond.


Glen Ellyn


474 N. Main Street
Glen Ellyn, IL 60137
Phone: (630) 790-3272



33 W. Jefferson Avenue
Naperville, IL 60540
Phone: (630) 355-1311

Contact Costello Jewelry Company


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Congratulations Costello Jewelry Company of Chicago, for being our Coast Diamond Featured Retailer of the Week!


Click here to find a Coast Diamond Authorized Dealer near you.

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Coast Diamond Engagement Ring of the Week: Festive 8.29 Carat Alexandrite and Diamond Halo, Set in Platinum

December is here at last, and there are only 25 days left until Christmas! Where, oh where, did the year go? If you’re expecting a marriage proposal this month, be sure to let your significant other know the Coast Diamond engagement ring you really want. (Also share this post with him so he can easily link to our site to find the Coast Diamond authorized dealer nearest to his home or office.)

Today we’re thrilled to share this week’s Festive Engagement Ring, the second in a series of Coast Diamond’s “Five Festive Rings” that we’ve selected to help you celebrate the holidays – and your love – in the most stylish way:

Coast Diamond Engagement Ring of the Week LSK10085-ALX

Coast Diamond Engagement Ring of the Week: Festive 8.29 Carat Alexandrite and Diamond Halo Platinum Engagement Ring

The 8.29 carat unheated Alexandrite is a gorgeous green color and is set in platinum and surrounded by a halo of diamonds. This spectacular ring is very rare, and available by special order at your local Coast Diamond retail store. (Product number LSK10085-ALX)

Once you’re done with your Cyber Monday shopping, get in the car and head to your nearest jeweler to try on Coast Diamond engagement rings, fashion rings, jewelry and other sumptuously unique items from our Coast Diamond Signature Color Collection.

Follow Coast Diamond on Facebook to see all #FiveFestiveRings as they’re unveiled every Monday!