default
June 2017
Gems and their Hardness Rating
May 2017
Emeralds: The Green Gem of South America
April 2017
The Diamond is April's Luxurious Birthstone
March 2017
MORE Jewelry Myths & Legends
February 2017
Jewelry Myths & Legends
January 2017
The Value of Gold
December 2016
Rembrandt Charms - Known the World Over for Fine Craftsmanship
November 2016
Mommy Chic from Berco
October 2016
Camelot - Over 75 Years of Stylish Engagement Rings
September 2016
Benchmark - Comfort You Can Trust
August 2016
Unique Settings of NY: Proudly Made in the USA!
July 2016
The Ruby, July's Birthstone, Has Been Treasured For Ages
June 2016
Colore | SG
May 2016
Offering the Best in Posh Mommy Jewelry
April 2016
Pearls: An Imperial History
March 2016
Pulsar Watches: Tell it Your Way
February 2016
Citizen Eco-Drive - The Leader in Ecology Friendly Timekeeping
January 2016
Supreme Jewelry - Diamonds, Bangles and More!
December 2015
Our Holiday Catalog Flahery's Jewelers Offers Turquoise for the December Birthstone Lover
November 2015
Ladies Night Beautiful Jewelry from FACET
October 2015
Overnight Mountings: Rings for Every Occasion
September 2015
Heavy Stone Rings: A Style to Please Any Man
August 2015
The Use of Silver in Jewelrymaking
July 2015
Stuller
June 2015
Pearl: The Symbol of Rarity
May 2015
Special Gifts for Women
April 2015
Flaherty Jewelers Offers Quality Jewelry Made by Chisel
March 2015
Types of Engagement Rings
February 2015
Engagement Rings: Origin
January 2015
New Year, New You: The Chrysalis Collection
December 2014
Tanzanite is December's Birthstone
November 2014
Shades of November: Citrine
October 2014
Opal Was Once The Gem of the Gods
September 2014
A Look at Sapphire, September's Birthstone
August 2014
Sardonyx is August's Birthstone
July 2014
Ruby is July's Birthstone
June 2014
Understanding Pearls - Types, Formation and Quality
May 2014
Emerald: The Green Gem That is May's Birthstone
April 2014
Diamond is April's Birthstone
March 2014
Jasper: March's Birthstone
February 2014
Amethyst: The Birthstone for February
January 2014
January's Birthstone is Garnet
December 2013
Tanzanite: December's Birthstone
November 2013
The November Birthstone is Citrine
October 2013
The Opal - October Birthstone
September 2013
The Sapphire - September Birthstone
August 2013
August Birthstone - Peridot
July 2013
Captivating Ruby - The Birthstone of July

Blog

Thursday, June 01, 2017
Gems and their Hardness Rating
by Flaherty Jewelers
When you visit Flaherty Jewelers, you will find an informative staff knowledgeable about the type of gemstones we offer and their characteristics. The "hardness rating" of a gemstone is very important and has an effect when creating jewelry, especially rings. The durability of a gemstone is important. For example, some rings, like wedding rings, are worn every day. This makes them vulnerable to thumps and knocks that can be hazardous to a gemstone. Some gemstones are stout enough to be placed in a ring that can be worn day-to-day, other gems are best for rings worn on an infrequent basis, and there are some gems that are not fit to be used in rings at all!

Gems and their Hardness Rating
One vital factor in measuring gemstone resilience is hardness. In gemology, a stone's hardness is gauged on a scale called the Mohs Scale, which allocates minerals a hardness rating between 1 for the softest and 10 for the hardest stones. The Mohs Scale was created in 1822, by a German mineralogist named Frederick Mohs. It characterizes hardness depending on the gem's scratch-resistance, in which a harder stone will scrape a malleable one, but not in reverse.

Diamonds are rated the hardest with 10, sapphires and rubies follow with 9, spinel, emerald, and topaz 8, quartz, tourmaline, and garnet 7. The supplest stones are talc-1, gympsum-2, calcite-3, and fluorite-4. The margin between harder and softer gemstones is usually given a Mohs rating of 7. Gems with a solidity of 7 or higher is best for rings, hardness ratings below 7 are not.

Is the Moh's System still Relevant Today?
The Moh's system, which determines the hardness rating of a gemstone, is somewhat simplistic in the eyes of today's gemologist. For instance, for a wedding or engagement ring intended to be worn everyday a hardness rating of 8 to 10 is advised. However, other factors are relevant as well. Take emeralds, they are characteristically heavy with various minute interior fractures. Therefore, in spite of its hardness rating of 8, emeralds are not considered tough enough for daily wear.

Moreover, Mohs scale is a "relative-scale" not an absolute one. It only demonstrates which gem is harder than another one, a comparative concept. Prior to any scientific equipment being used to examine minerals optically, mineralogists relied unswervingly on the Mohs Scale scratch-test much more than they do today. At present, with more advanced technology, the scratch assessment method for hardness is hardly utilized because of its vague testing of hardness and the likelihood of impairing the specimen being tested.

At Flaherty Jewelers, we use the latest and best hardness rating methods to determine the strength of any of the gemstones we offer. This way, we ensure that our customers are satisfied with their jewelry purchase.







AT: 06/01/2017 11:12:35 AM   LINK TO THIS ENTRY
0 Comments:

Post a Comment
 
Comments are closed.