Natural and Lab-Grown Diamonds and Gemstones

Experience the Brilliance of Diamonds and Gemstones With J.P. Haase Jewelers

When it comes to diamonds and gemstones, J.P. Haase Jewelers is your trusted partner. Whether you are looking for a natural earth-mined diamond or a lab-grown diamond, we have the perfect selection for you to choose from. We invite you to visit our store and experience the sparkle and allure of our exquisite collection.

Advantages of Jewelry Shopping at J.P. Haase Jewelers

Our selection of diamonds and gemstones is unparalleled in Milwaukee and Waukesha Counties. Here are the reasons why you should choose us:

• Full CAD designing ensures precision and attention to detail
• Outstanding quality jewelry at affordable prices
• Quality selection, service, and prices
• Accommodating special orders and custom in-house jewelry options
• Responses by the next business day

For the finest diamonds and gemstones, don't hesitate to visit J.P. Haase Jewelers.

Experience the J.P. Haase Jewelers Difference

What sets us apart from other jewelers is our commitment to providing you with the best service and products. Here's what you can expect from us:

• Full custom design and completion in two to three weeks
• Most repairs completed within one week
• Complementary polishing, cleaning, and checking while you wait
• Custom artistic drawings and carvings
• Jewelry preview rendering
• Satisfaction guaranteed with our 30-day return policy
• Milwaukee's #1 source for lab and mined diamonds
• We beat all local competitor's pricing

Visit J.P. Haase Jewelers, and let us help you find the perfect diamond or gemstone.

Our Diamonds and Gemstones

We offer a wide range of diamonds and gemstones, including natural earth-mined diamonds and lab-grown diamonds. Our lab-grown diamonds are created through chemical vapor deposition (CVD) and high-pressure, high-temperature (HPHT) methods, ensuring their quality and brilliance. Contact us today to learn more.



Contact J.P. Haase Jewelers Today

Ready to discover the perfect diamond or gemstone? Visit J.P. Haase Jewelers today. We look forward to serving you.

Learn More About Our Diamonds

Natural Earth-Mined Diamonds

The characteristic chemical composition and crystal structure make diamonds a unique member of the mineral kingdom. Diamonds form under high temperature and pressure conditions that exist only within a specific depth range (about 100 miles) beneath the earth’s surface. Their crystal structure is isometric, which means the carbon atoms are bonded in essentially the same way in all directions. 

Another mineral, graphite, also contains only carbon, but its formation process and crystal structure are very different. The result is that graphite is so soft that you can write with it, while diamond is so hard that you can only scratch it with another diamond. Only one part per million of mined rock material ends up diamond material. Now, that’s rare!

Lab-Grown Diamonds

These diamonds, grown in a laboratory, share most of the characteristics of their natural counterparts. There are two common methods of producing these diamonds:

• Chemical vapor deposition (CVD): CVD allows diamond growth in a vacuum chamber due to a chemical reaction that releases carbon atoms that precipitate on diamond seed plates.
  
• High pressure, high temperature (HPHT): HPHT diamond growth is from a melt flux that dissolves carbon at higher temperatures, and the diamonds form on seed crystals in a lower temperature portion of the growth chamber.   

Diamond Cuts