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2. Passivation (chemistry) - Wikipedia

   en.wikipedia.org/wiki/Passivation_(chemistry)

   In physical chemistry and engineering, passivation is coating a material so that it becomes "passive", that is, less readily affected or corroded by the environment. . Passivation involves creation of an outer layer of shield material that is applied as a microcoating, created by chemical reaction with the base material, or allowed to build by spontaneous oxidation

3. Ammolite - Wikipedia

   en.wikipedia.org/wiki/Ammolite

   Ammolite is usually fashioned into freeform cabochons and mounted in gold, with diamonds as accents. Due to its delicacy, ammolite is best reserved for use in pendants, earrings, and brooches; if used as a ring stone, ammolite should be given a hard protective cap, namely one of synthetic spinel as used in triplets. Whole polished ammonites of ...

4. Rhodium - Wikipedia

   en.wikipedia.org/wiki/Rhodium

   It is electroplated on white gold and platinum to give it a reflective white surface at time of sale, after which the thin layer wears away with use. This is known as rhodium flashing in the jewelry business. It may also be used in coating sterling silver to protect against tarnish (silver sulfide, Ag 2 S, produced from atmospheric hydrogen ...

5. Jewellery cleaning - Wikipedia

   en.wikipedia.org/wiki/Jewellery_cleaning

   Jewelry with gemstones such as diamonds or sapphires can be cleaned at home as well using mild soap and warm water. However, gemstones such as opals and pearls should be done professionally. Another issue is the age of jewelry, as certain materials or build strategies of older jewelry (such as from the Georgian era ) may have restrictions, such ...

6. Diamond-like carbon - Wikipedia

   en.wikipedia.org/wiki/Diamond-like_carbon

   Diamond-like carbon (DLC) is a class of amorphous carbon material that displays some of the typical properties of diamond. DLC is usually applied as coatings to other materials that could benefit from such properties. [1] DLC exists in seven different forms. [2] All seven contain significant amounts of sp 3 hybridized carbon atoms.

7. Glamorous gold jewelry staples you can wear on repeat — all ...

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   Affordable gold jewelry on Amazon. Amazon. Pavoi 14K Yellow Gold Plated Lightweight Chunky Open Hoops. Sometimes, the most simple designs are the greatest show-stoppers. Hypoallergenic, nickel ...

8. Baublebar's sitewide Black Friday sale is one you can't miss ...

   www.aol.com/lifestyle/baublebars-sitewide-black...

   Get 30% off all jewelry at Baublebar during the brand's sitewide Black Friday sale. Get 20% off custom items, too. ... These 18K gold hoops are a simple statement piece that add class to just ...

9. Gold bar - Wikipedia

   en.wikipedia.org/wiki/Gold_bar

   The standard gold bar held and traded internationally by central banks and bullion dealers is the Good Delivery bar with a 400 ozt (12.4 kg; 27.4 lb) nominal weight. However, its precise gold content is permitted to vary between 350 ozt (10.9 kg; 24.0 lb) and 430 ozt (13.4 kg; 29.5 lb).