Diamond Resources

Diamonds are one of the most extraordinary minerals on Earth. Their extreme and inherent beauty makes them one of, if not the, most sought-after gemstones around. Natural diamonds require extreme temperature, pressure, and time in order to be fully formed. They are incredibly rare and easily one of the most valuable commodities on Earth.

K. Rosengart prides itself on supplying the best and highest-quality diamonds for our clients. When purchasing diamonds, you need to know everything you can in order to get exactly what you need and want. We’ve put together this group of resources for anyone that needs to know more about diamonds and our services.

Frequently Asked Questions

Despite being one of the most visible and well-known resources, there is still a lot people don’t know about diamonds. Below we try to answer some of the most frequently asked questions about diamonds and our business.

Do you sell larger stones as well as melee?

Absolutely. We offer larger GIA Certified stones alongside our extensive melee diamond inventory.
How much does shipping cost?

Depending on where we’re shipping the order, the price can vary.
Are there minimum orders?

No – we do not have minimums. We can ship you one stone or thousands of carats.
How do you ship the goods?

Most orders are shipped via armored courier if needed. Our system will send you an automated email that allows for you to check delivery status.
Do you sell colored stones?

Yes. We offer colored melee as well as larger stones. Click here to check out our color guide.
Do you take trade-ins?

Yes. We currently offer this service to all our clients. If you bought the stone from us we’ll give you a trade-in value. Not our stone? Send it in and we’ll make you an offer free of charge.
I am working on a piece that takes several sizes, can I have the goods on memo?

Yes – we will provide the needed sizes and extra stones so you can finish your job without needing to swap out stones and having production delays.
Do you accept credit cards?

Yes – we accept Mastercard, Visa, AMEX & Discover.

Diamond Guides & Documents

Looking for more information about diamonds? Our diamond guides are here to help you get exactly what you need or want.

Documents

Google Rating

5.0

Based on 32 reviews

K.Rosengart

Susan Casas

18:43 16 Aug 22

Working with K.Rosengart was a wonderful experience. They listened to me carefully and made a beautiful custom diamond band to fit perfectly with my engagement ring. I am thrilled with the way it turned out! I highly recommend K.Rosengart for all of your custom jewelry needs.

Ron Chielli

23:16 31 Dec 21

Lynn A.

22:58 14 Oct 21

K Rosengart has phenomenal, ideal-cut diamond melee that they sell both to the trade AND to hobbyists and consumers without onerous minimum order requirements. The melee I have gotten from K Rosengart has been top quality and better priced than what I could get even from manufacturers in China.

David Allen

19:50 12 Aug 21

I have had a decades long relationship with Karen from K. Rosengart. From the engagement ring she created over 31 years ago to new diamond wedding bands there is no other person I trust to take care of my wife and I when it comes to diamonds. The combination of trust, creativity and communication is unmatched!!!

Morgan Burger

15:03 10 Aug 21

Robert Sledge

20:50 06 Aug 21

Best place to buy Melee diamonds. Great variety of shapes.

Valery Brinda

15:29 16 Jun 21

Such a great experience - fast, easy, accurate and such nice people to work with!

Jordan K

21:02 13 Apr 21

Karen and her team helped me craft the perfect custom engagement ring for my proposal with a princess cut diamond and melee diamonds on the band. Thanks for helping me look like a rock star!

Emanuel Sofiev

02:06 13 Jan 21

BJ Palmer

22:36 20 Dec 20

Elisa Melegari

19:01 20 Dec 20

Great customer service and high quality diamonds!

Tacey Anderson

17:14 03 Dec 20

Quality was excellent The diamond was beautiful Customer service was the best We will use them again

Rodrigue TovR

15:26 30 Jul 20

Helped make my order through chat since the checkout wasn’t working and attended to my needs quickly .

Bob Disinger

15:36 14 May 20

I stumbled onto K Rosengart during this whole Covid-19 issue. She has been excellent to work with. Great diamonds and prices but most of all great service. I have been in the biz for 30 years. I highly recommend you give her a try.

Franz Ferro

15:55 14 Apr 20

Amazing service even during these crazy times!Very friendly, kind assistant named Karen, professional, fast delivery (overnight) and the exact diamond quality and color I've ordered, for a fair market price. Already recommended to others.

Irfaan Hassan

09:58 09 Apr 20

Diamonds 💎💙😊

Original Eve Designs

16:45 08 Apr 20

K. Rosengart is the most reliable place in the jewelry industry for diamond melee purchases. The team is pleasant, reliable, and extremely capable. I could not recommend them and their product more highly!

Derek Katzenbach

16:08 12 Mar 20

Karen and Arielle are the best! They’re willing to help with any job, big or small. Highly recommend them.

Lewis Williams

17:55 09 Dec 19

Excellent product + customer service

Jason Kohler

20:54 15 Oct 19

I had an excellent experience purchasing melee diamonds from K Rosengart. I was building my own engagement ring for my (now) fiance, and Karen was very helpful. Great communication by phone, email, and actually the online chat as well. Most retailers I talked to only wanted to deal with customers associated with the jewelry trade, so I am grateful K.Rosengart was happy to deal with smaller customers like me!The 10 melee diamonds were excellent as far as I could tell. All had great diameter and color consistency. Prices were good. Overnight shipping arrived on time.

Jeffrey Thomson

16:04 10 Oct 19

The melee was gorgeous real VS and the sizes were all 1.5mm as asked only tiny variances. Great customer service. Calling them today actually. Jeff at J Thomson Custom Jewelers OKC OK USA

Jessica - Finch Jewelers

15:52 10 Oct 19

I met Karen at a conference last month and really appreciated how approachable she was to chat with. I told her one of my biggest issues with ordering melee in bulk was how inconsistent the parcels were. I work in CAD so I need my melee consistent with size and quality. She told me that was one aspect that set her apart form other vendors. I gave her a shot and have been extremely pleased with what she has been sending me. Her price is competitive, but the attention to detail surpasses other companies I've been ordering from. What will really keep me coming back is the warm personalities of her and her staff; she is a pleasure to work with.

John Korschen

23:32 19 Sep 19

My experience with Karen was exceptional!!!! This was my first time sending a diamond to be repaired. I called alot of people and asked alot of questions before settling on Karen to fix my diamond. There is a lot of trust that needs to be present to send your diamond to a business out of state. Not only with shipping, but with the person you send it to. She answered my million questions cheerfully and with exacting answers. After speaking with her I knew where my diamond would be and what would be done with it from start to finish. To my surprise, it was done before expected and back in my hands in under a week. The diamond was 100% again and they did it without affecting the size very much. I trust her to care for future diamond projects I will be working on in the near future. She is very trustworthy and the work is AMAZING!!!! Thanks again Karen!

Daniel Namdar

00:31 09 Aug 19

Amazing people, real experts!

Thomas W. McKinney

17:18 05 Jun 19

So easy to do business with Karen and her diamonds are really beautiful. Will continue to use her as my diamond source on additional projects.

Theresa Kump Leghorn

12:19 12 May 19

King Street Diamonds

18:04 29 Apr 19

Great communication and overall customer service for diamond orders. Karen and her team were very good at ensuring every step of the way was easy, efficient and effective. Overall, outstanding work! We highly recommend them for any orders/services they provide

Jeff Hapeman

11:51 23 Apr 19

Outstanding quality, excellent service

Vance Reusch

15:30 10 Apr 19

Very helpful, very knowledgeable, and best of all, I consistently get exactly what I order.

Buddy Austin

18:46 09 Apr 19

Karen and her team are the most helpful and friendly group of people I've worked with to date in the diamond world. I'm super grateful to know them on an individual level and their business model is extremely beneficial to me as an independent designer and small business owner.The quality of their product is always on point and consistent.

Cassie T

19:37 07 Nov 17

Bill Teubner

19:47 02 Oct 17

Purchased a one of kind diamond necklace from K. Rosengart recently. They took the time to understand what I wanted and delivered ahead of schedule. I'll be back again!

See all reviews Write a review

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Diamond Resources

Frequently Asked Questions

Diamond Guides & Documents

Documents

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