Manufacturing Warranty

A Pledge To Guarantee Quality

Lifetime Manufacturing Warranty

At Stienhardt & Stones we have made it our priority to provide high-quality jewelry and lab-grown diamonds to our customers. We guarantee that all jewelry purchased from our website will be free from manufacturing defects in materials and workmanship at the time of delivery and that the optical properties of the lab grown diamonds will never fade or cloud over time.

Our diamonds and jewelry are manufactured to the highest standards and use the highest quality materials. Each item is carefully inspected at our factory and our distribution facility prior to shipment.

We offer a Lifetime Manufacturing Warranty to all of our customers, regardless of the price and type of item. The Lifetime Manufacturing Warranty is effective from the date of purchase only for purchases made at Stienhardt & Stones, and it is non-transferrable.

Although we stand behind our product, we do exclude the following defects from the Lifetime Manufacturing Warranty:

  • General wear and tear, scratching, trauma, loss of center stones, product loss, theft, or improper cleaning and storage.
  • Fading or discoloration of metals over time due to inadequate care (Examples: wearing it in the hot tub or swimming pool, spraying perfume or other chemicals directly on the jewelry, etc.)
  • Precious metals, and especially prongs, wear down over time as part of normal use. Thinning of prongs due to regular wear might cause them to open up and the stone could be at risk of falling out. This is not considered a manufacturing defect.
  • The loss of the center stone caused by trauma or damage is not covered under the Manufacturing Warranty.

Should you have an issue with your purchase due to manufacturing, please email us at here and we will send you a pre-paid shipping label in order to send your jewelry in to us. Once received, we will inspect the jewelry to determine if damage is covered by our Manufacturing Warranty. If it is covered, we will complete the work or, at our discretion, replace the item without charge and ship it back to you. If the damage is not covered by our Lifetime Manufacturing Warranty, we will email you a price quote before the work is performed. If you approve the quote, we will collect payment for the repair and shipping. We will then complete the repair and ship the item back to you using a standard ground shipping method.

We recommend that you insure your jewelry for loss, theft, catastrophic damage, or damage to your center stone. Examples of damage to center stones may include chipping, cracking, or breaking. While diamonds are very durable, they are not indestructible, and normal wear and tear, especially on rings, can cause damage.


Sometimes due to regular wear and tear, your jewelry will need to be repaired and maintained. These services are available at our US facility, and we will be happy to help. Since our customers are our very important to us, we will always do our best to keep the repair costs low, at the same time ensuring the integrity of the piece. Remember, repairs by third-party jewelers will void your warranty with us. Some common types of repairs we offer are replacing side stones, tightening prongs, re-polishing, re-plating rhodium, or a thorough cleaning. All you need to do is pay to ship the item to and from us!

For orders shipped internationally, we cannot offer ring resizing since taxes are levied every time a jewelry item crosses the border. 


We offer 1 free resizing after purchase of your ring. The customer will be responsible for shipping back to Stienhardt & Stones NYC location. Some rings that have pave diamonds will not be able to be resized more than 1 or 2 ring sizes due to the structural integrity of the ring.


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