Zinc Polishing Lap

Zinc Polishing Lap

Aluminum Master Lap

Aluminum Master Lap

8" Girdle Polishing Chrome Oxide Lap

Polish girdle of your stones easily with this 8" Girdle Polishing Chrome Oxide Lap

Our specially manufactured Girdle Polishing Chrome Oxide polishing Lap is ideal for polishing girdle of your gemstones. It is carefully fabricated using the finest raw material procured from the most authentic sources in the industry. Known for its durability, sturdy construction, and exceptional performance, this premium lap is widely used for lapidary polishing by artists over the world for polishing Emerald, Quartz, Jade, Garnet, and other stones with a hardness range from 5 to 8 on Moh's scale.


As low as US$180.00
Availability: In stock


  • Chromium oxide is a green-colored, hard lapidary polishing agent, that is the most effective for polishing gemstones.
  • Chromium Oxide is an ideal choice for polishing softer gemstones that have hardness from 5-8 on Moh’s scale.
  • The polishing lap comes infused with the chromium oxide polishing powder and diamond compound (premium model), hence there is no requirement of charging the lap with any other polishing compound before usage. 
  • Width of the polishing area is 1".
  • Chromium oxide lapidary polishing lap ensures scratch-free polish that provides a mirror-like surface to the gemstones.
  • For an Emerald cutter, this lap is the perfect answer for wholesome, easy, fast, clean, and satisfactory polishing of Emeralds.
  • It also has the ability to function on a wide variety of gemstones such as polishing Quartz, Jade, Garnet, Aquamarine, Beryl, Tourmaline, Tanzanite, Peridot, and other similar stones. 
  • The chromium oxide lap baseplate is machined with strong aluminum, which gives it a sturdy construction and the ability to last long.
  • This polishing lap only requires drips of water on the surface while functioning, which works as a coolant so that overheating of the lap is avoided.
  • The lapidary polishing lap has been manufactured with the utmost precision to provide a perfectly flat and parallel to the surface lap. This ensures great balance and accuracy for smooth, superior quality lapping of a gemstone.
  • The lap needs to be dressed from time to time in order to maintain the plane and smooth surface for lapidary polishing. The best results will be achieved using a dressing stick that delivers perfect results.
  • It is available in two variant qualities that are Standard and Premium (impregnated with diamond compound for even better polishing results) to suit your needs. Check out our complete range of polishing and faceting supplies here.


  • This lap is a one-of-a-kind polishing and faceting supplies that is charged with chromium oxide, differentiating it from the conventional polishing laps made of compounds such as zinc, tin, etc. 
  • Before usage, the lap does not require to be charged with any additional agents. This makes the lapidary polishing and faceting process easier, effortless, and convenient as there is no risk of the polishing agent/powder seeping into the gemstones through cracks or nicks. This avoids deterioration of the quality and value of gemstones. Using chromium oxide lap is a far better and an elegant polishing process for gemstones.
  • The quality of high-concentration and reduced friction contributes to the superior quality of the polishing laps.
  • Another point that makes this polishing lap stand out from other versions of lapping with chromium oxide is that it does not leave green stains on clothes and fingers. Hence, you don’t need to worry about any kind of a mess.
  • It is guaranteed that it will outperform other kinds of lapidary polishing supplies to give you unsurpassed quality results of polishing gemstones.
  • It imparts a rapid, fast-paced, yet reliable quality performance for desired results of polishing gemstones and brings versatility to the whole process.
  • This lap is a valuable investment and proves to be cost-effective in the long run, due to its longer life and better polishing.


  • Arbor: ½” 
  • Diameter: 8”
  • Depth (Polishing Region): 13.55mm
  • Polishing Area Width: 1"
  • Overall Depth: 27mm
  • Ideal Running Speed: 1800 RPM
  • Compound: Chromium Oxide #600 (Standard model), Chromium Oxide #600 + Diamond Compound #50,000 (Premium Model)


  • Best results from these lapidary polishing laps for faceting are obtained when you put the least pressure while polishing valuable gemstones such as Emerald, Quartz, Jade, Garnet, etc. It should be such that constant contact is maintained. High pressure could lead to scratches and chipping away of the top polished layer.
  • The surface of the polishing lap should be constantly lubricated with water to keep the surface moist, as heat is absorbed in the process. Hence, the lap will work efficiently for a longer time.
  • You need to be aware of the type of compound of the polishing and faceting lap that will be ideal for your choice of gemstone. It varies according to the hardness and type of stone. Chromium oxide is utilized best for polishing gemstones such as Emerald, Quartz, Garnet, Jade, Beryl, Tourmaline, Peridot, Feldspar, and other similar stones. Check out our complete range for polishing laps here if you are looking for a different polishing compound. 
  • It is imperative to always keep the gemstone and polishing lap clean to achieve a superior quality of shine and polish of the gemstone.
  • The room chosen for lapping should also be free of any dust to avoid even the minutest of scratches and dirt from the gemstone.
  • We suggest that the lap speed should be moderate, i.e. around 1500 RPM as high speed leads to more stock removal of the gemstone being polished.
  • The dressing of the lap should be done carefully to achieve a true plane surface as it determines the quality of the polished stone.


  • Time for shipping varies depending on the shipping region but usually, it takes a maximum of 5-7 business days to be delivered anywhere in the world, once it’s dispatched. 
  • The shipping of our green chromium polishing lap is insured. 
  • For International customers, the fees on import duty or customs charges will not be incurred by us. Every country’s customs policies are different and must be considered by the customers on their own.


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