The Loupe

Sphalerite-A gem rarity from Spain

Sphalerite-A gem rarity from Spain

We like the unusual and rare gemstones.  Sphalerlite is one of those gemstones.   It is a zinc ore material that typically contains iron. When it has a high iron content, Splalerlite is opaque black.  Gem quality material has a low iron content , resulting in transparent crystals.  The gems we have here in the store are from the Aliva mine in Spain which has been closed since 1989.


Sphalerlite is not often seen in jewelry due to it’s lack of hardness.  It is not recommended to be worn daily in rings that get general wear and tear.  However, Sphalerlites brilliance and high dispersion make it a beautiful gemstone for jewelry.  It is best used in pendant where it would be protected.


Shalerlite is thought to provide its wearer with strength and vitality.  It is said to increase recovery from illness and protect against infection, exhaustion, and fatigue.   Sphalerlite is not a traditional birthstone but it is the non traditional gemstone for those born under the sign of Gemini.


When time allows, make a point to stop in the store and see this rare gem.

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Post Hurricane Irma Devastation - Please Help us Help our Neighbors.

Our family was incredibly fortunate. Everyone remained safe and our homes as well as Kristoff (miraculously) sustained no damage. As we anxiously returned home (from Arizona, Atlanta, and North Carolina), our joy quickly turned to a sickening mix of anxiety and sorrow. Our beautiful Naples looked completely foreign with trees ripped from the ground and damage at practically every turn.

Kristoff Jewelers - 5th Avenue South during Hurricane IrmaImagine our reaction to seeing this on the news! All of 5th Avenue South flooded and that is Kristoff right in the middle!

 Downtown Naples post Hurricane IrmaDowntown Naples post Irma.

Naples, FL post Hurricane IrmaNaples.

However, our city was considered a place that was "spared". It hardly looked spared, which brought tears thinking of what it must be like in our neighboring Marco Island, Everglades City, and Goodland, which all experienced incredible devastation.

Aerial View of Damage in Goodland post Hurricane IrmaAerial View of the damage in Goodland, about 20 miles south of Naples.

Goodland is still completely without power and water over two weeks post Irma. The homes that remain are filled with about 2.5 FEET of MUD. Just think about that! There is no describing the scope of the devastation, so please join us in helping our neighbors!

We are collecting donations at the store. Then, along with our friends (who also secured our hurricane shutters when we were in Arizona! THANK YOU!) we will be personally driving all of your donations directly to families in need in these communities. Below you will find specific items that are desperately needed as well as other ways you can donate.

We sincerely THANK YOU for any contribution you are able to make.  We will be posting updates as we go and sharing photos.


You can drop off items for donation to the store during open hours.
640 5th Avenue South, Naples.
Sat. 11am-4pm

We will be delivering these items to Everglades City, Goodland, Marco and other hard hit areas.

Urgently Needed Items Include:
General Cleaning Supplies
Simple Green Cleaner (best for mold)
Large Flat Shovels (Many homes still have over 2 feet of mud inside)
Contractor Trash Bags
Shop Towels
Paper/Plastic Plates and Utensils
Large Plastic Storage Tubs
Personal Hygiene Items
Mosquito Repellant
Baby Formula
Baby Bottles
General Baby Care Items


Lots of the needed items listed above can easily be purchased online via Amazon. Ship these items to the store and we will deliver them directly to those in need.

Ship to: Kristoff Jewelers
640 5th Avenue South
Naples, FL 34102


One of the greatest needs is monetary donations and gift cards. Many families in our area have lost their homes or sustained catastrophic damage, and have also been unable to work since the storm. 

We're starting with a $500 cash donation and 5% of all sales through October will be donated to local families. Monetary donations will be accepted in person and via phone. Gift cards can be dropped off or sent to the store.

100% of donations will go directly to local families in need.

If you have questions feel free to call us 239-263-8999 or email: Michael@kristoffjewelers.com

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Our attempt at a Vintage Inspired Velvet Ring Box.

Our attempt at a Vintage Inspired Velvet Ring Box.

Some number of years ago Martha Stewart Weddings did a cover with the most beautiful little candy colored velvet ring boxes.  I was instantly in love and on a mission to find them. I contacted Martha Stewart Weddings about them and was told that "her team" had made them, so there was no chance of purchasing them. 

A few years later I got word that a company called The Mrs Box had begun making these yummy little boxes.  The colors are divine, but the price tag is a bit shocking at $75 dollars for a single ring box that is barely over an inch big.

The artist and jeweler in me couldn't resolve paying so much for something that I could surely make. Well, I made up my mind that I was going to purchase a few Mrs. Boxes to use in photographing our jewelry at Kristoff. Then, late one night creative instincts crept in and I decided to scour Amazon to see if I could get the supplies I needed at a reasonable price. I could, so I decided to give it a go before spending hundreds of dollars on 4 or 5 teeny tiny little velvet ring boxes.

I'm adept at computer aided design, trained in the delicate art of goldsmithing, always been good at math, and I have an art degree from Pratt Institute. If anyone should be able to make these little things - it was me.

Well, let me start by telling you that The Mrs Box is WORTH EVERY BIT of the $75.

After taking quite a bit of time figuring out the sizes all of my pieces would need to be, it took me 3 hours to measure, cut, and assemble the box. I'm sure I would become quite a bit faster in making subsequent boxes, but I figure I'd be lucky to cut the time in half.

Planning and Cutting to make our Velvet Ring Box

In progress - handmade velvet ring box

Making a Mrs Box

Of course, this test box used inexpensive material, not vintage French velvet, and in making one I learned a number of tweaks that I could make to end up with a much cleaner result, but I'm not sure that I care to make another.

Our Completed Velvet Ring Box

Completed Mrs Box

I've satisfied my artistic curiosity, and I look forward to purchasing some Mrs. Boxes!

If you want to get your hands on one of these pretties, believe me, they are worth it.  You should not feel bad about splurging just a bit in order to store your precious rings in an equally precious box.



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Custom Design - Luis's ENORMOUS Opal!

Custom Design - Luis's ENORMOUS Opal!

We are fortunate to have some pretty spectacular clients that allow us to constantly expand the boundaries of custom designed fine jewelry.

The process we use removes all of the guess work so you know exactly what your piece is going to look like before we ever begin making it. As a little peek into what it's like to design a truly one-of-a-kind heirloom piece of jewelry, we're going to take you inside our designing of an enormous opal ring for a dear client and friend, Luis.

Michael and Luis

H. Michael Rose and Luis Coronado at Kristoff Jewelers in Naples, FL

Luis loves big rings! He often admired our selection of rare Ethiopian opals that we have in the store, but they weren't quite big enough for him.  So, he set us on a mission to find him a 20+ carat opal. We were able to locate a very rare Australian opal that originated from an area that hasn't been mined in over 25 years.  The area was known for producing crystal opal with a lot of red in it.  None of the opal that has been mined in more recent years has been discovered with as much color. So, finding an opal with the color play in Luis's is nearly impossible.

The opal we used in his ring was actually a large free form piece of opal that had been polished in it's original shape, and had never been cut. We were able to secure it from the mine owner's private collection and have it cut to our specifications - 26 x 19.5 mm and over 22 carats!

The Computer Aided Design (CAD) of the Ring

CAD Design of Custom Opal Ring


Photo-realistic renderings of the ring prior to production.

3/4 Render of Opal Ring

Rendering of Opal Ring

Side View Rendering of Opal Ring

Through Finger View Rendering of Opal Ring



To scale rendering of the ring to show the size of the ring on the hand.

Rendering of Custom Opal Ring on Hand

3/4 Rendering of Opal Ring on Hand

Side View Rendering of Opal Ring on Hand


The finished beauty!

Custom designed rings by Kristoff Jewelers

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Uncommon Finds - Caesar Bracelet and Gold Scripture Book

Uncommon Finds -   Caesar Bracelet and Gold Scripture Book

We love an unusual find, and this collection of two very unusual pieces from London Goldsmith Konstantin Liamin is something you'll never see elsewhere.  Both pieces are one-of-a-kind and were completely handmade in the oldest traditions of goldsmithing.

The cover of the gold scripture book depicts Jesus surrounded by his apostles, followed by 10 pages of finely wrought and hand engraved Bible text from Matthew 5:1-48 and Model Prayer Matthew 6:9-13. The back cover has Archangel Michael framed by Seraphim.  

Gold Scripture Book    

The Caesar bracelet, which is incredibly detailed in 18 karat yellow gold, has six round and six octagonal custom cut pieces of nephrite jade of the finest quality.  It was completely made by hand and is finished with a fabulous opalescent enamel.


Konstantin learned and honed his craft in his native Russia.  He was taught by one of the country's most respected goldsmiths in the reserved tradition of jewelers like Karl Faberge.

A personal invitation by Bentley and Skinner of Bond Street London, led Konstantin to be involved in the creation of Damian Hirst's famed diamond skull.

His workshop is currently in London's Hatton Garden. If you are in Naples, we invite you to see and experience these in person.


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We Welcome our New Diamond Cutter

We Welcome our New Diamond Cutter

We are so excited to have welcomed our in-house diamond cutter, David Flores, over the summer.  Diamond cutting is a process that most in the jewelry industry never have to opportunity to see with their own eyes.  So, his presence at Kristoff is truly special, and he's quickly become part of the family at Kristoff. He began cutting diamonds when he was just 16 years old, and is now passing the skill and tradition onto Michael Rose, the owner at Kristoff.

We welcome you to stop in to witness a diamond being cut, and we now offer repair services on diamonds.  We can fix chipped diamonds, recut diamonds, or do custom cuts. For more information or pricing on these services, you can call us at 239-263-8999, or stop in the store located at 640 Fifth Avenue South in Naples, FL.

David Flores Cutting a Diamond

Diamond being cut.

Michael Rose and David Flores


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Welcome to The Loupe

Welcome to The Loupe

The Loupe is a place where we'll be sharing expert tips on purchasing and caring for your jewelry, the stories behind some of our most unusual pieces, and a look behind the scenes of our world of high-end jewelry and custom design.


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