SKU: 67225109949

DEGUSSIT® Ruby® Stones, Half Round 4" x 3/8"

Sale price$138.66 Regular price$154.07
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Ships within 48 hours · Estimated delivery Sep 5 - Sep 10

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Description

DEGUSSIT® Ruby® Stones, Half Round 4" x 3/8"Gesswein Ruby Stones and Files are made by Friatec Degussit from pure, sintered crystals of synthetic ruby. No bonding material is used, so these stones are extremely hard and resistant to changes in shape. This is particularly important for quality precision grinding and finishing. In addition, since Gesswein Ruby Stones have an outstanding resistance to wear, they are more economical to use than other comparable tools. Use dry or with Gesswein

Gesswein Ruby Stones and Files are made by Friatec-Degussit from pure, sintered crystals of synthetic ruby. No bonding material is used, so these stones are extremely hard and resistant to changes in shape. This is particularly important for quality precision grinding and finishing.

In addition, since Gesswein Ruby Stones have an outstanding resistance to wear, they are more economical to use than other comparable tools.

Use dry or with Gesswein Stoning Oil to grind, touch up or debur steel and carbide parts. Ruby stones are also recommended for use on materials such as glass, quartz and porcelain.

All are 100mm (4") long, medium grit in a variety of shapes & sizes.

*All dimensions have tolerance of ±0.1mm.

Ruby Stones are the ideal choice for deburring, blending, dressing, and fine polishing of molds & dies made of hard metals such as hardened tool steel, carbide and surgical stainless steel. Jewelers use them for sharpening of carbide and high speed steel engravers and other tools.

Mold & Die Uses:
  • Deburring ejector pin holes.
  • General deburring and edge breaking on mold steel and carbide.
  • Blending a surface where a straight edge meets a radius.
  • Polishing highly detailed areas on dies (after dressing Ruby Stone to a fine point).
  • Ruby Midget Files (see "Related Products" below) can be used in an Ultrasonic Handpiece for fast deburring and blending in ribs and other hard to reach areas. Ruby Stones cut faster than our very popular Super Ceramic Stones.
Medical Instruments:
  • Fine polishing of surgical stainless steel instruments.
Jewellers and Engravers:
  • Polishing and shaping of carbide & high speed steel gravers.
These fine grinding stones are made of Degussit DD57 (sintered ruby) which is a homogenous mixed-crystal material. The main element is aluminum oxide. The characteristic red colour is the result of an admixture of chromium oxide.

Because Degussit DD57 is a homogenous ceramic material which is bondfree, these stones cannot be classified in terms of "grit" but only in terms of the average grain size. The average grain size of types "fine" and "medium" is about 10µ. Type "coarse" has two average grain sizes at about 10µ and 100µ.

No bonding material is used, so these stones and files are extremely hard and resistant to changes in shape. This is particularly important for quality precision grinding and finishing.

In addition, since Degussit Ruby Stones and Files feature outstanding resistance to wear, they are more economical to use than other comparable tools.

Use dry or with Gesswein Stoning Oil to grind, touch up or debur steel and carbide parts. Also recommended for use on materials such as glass, quartz and porcelain.
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 67225109949

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MK
Boise, US
★★★★★ 5
Amazing for quality and price
Size: 10 Inch, Unit Count: 100
Love these for the price! Normally I get Walmarts off brand but this is so much better quality and delivery right to my door! Love how sturdy and leakproof they are and ease of use for party friendly events or everyday use; very versatile!
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Reviewed in the United States on April 7, 2026
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Emari
Lake Worth, US
★★★★★ 5
Great value!
Size: 10 Inch, Unit Count: 372.0, Size: 10 Inch, Unit Count: 372.0
Nice paper plates! They’re sturdy enough to hold two fairly heavy sweet potatoes safely in one hand, they have a waxy layer so liquid and gravy don’t soak into the plate. The design is nice. For the price and the quantity alone, I’ll keep ordering these!
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Reviewed in the United States on April 17, 2026
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Michael sweet
Pawtucket, US
★★★★★ 4
Great for the money
Size: 10 Inch, Unit Count: 100, Size: 10 Inch, Unit Count: 100
It's really nice. A little shorter than the actual size listed.
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Reviewed in the United States on May 29, 2026
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Ilda Espana
Fort Morgan, US
★★★★★ 5
Sturdy and good price
Size: 10 Inch, Unit Count: 44
These plates a wide and sturdy. We use them everyday at home to minimize dirty dishes which makes cleaning really easy. We’ve had even stew on them which can be very soupy and they don’t leak and they don’t get soggy. It’s also a good price point for the amount of plates it comes with. Good for everyday use or for hosting as well
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Reviewed in the United States on April 3, 2026
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Ana Tagoai
Carnegie, US
★★★★★ 5
Sturdy, Strong, and Leakproof
Size: 10 Inch, Unit Count: 100
Come on now, its paper plates, it means i don’t have to do dishes. Their sturdy, leakproof, and has a cute design. Good for parties and everyday use. Holds a lot, inexpensive compared to name brand, i would buy them again.
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Reviewed in the United States on March 30, 2026

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