Mohs Scale – Choosing Durability

mohl-1009_blog Unique Engagement Rings

Created in 1812 by the German geologist Friedrich Mohs, the Mohs scale rates the hardness of gems and minerals. A gemstone’s hardness determines its resistance to scratching. He chose ten minerals and assigned them numbers based on how easy or difficult they could be scratched by the other minerals.  Today, this scale is an important tool to utilize while shopping for diamond or gemstone jewelry. A Mohs rating helps us identify a gem’s durability, and the more durable a gemstone the greater its longevity in a piece of jewelry that will be worn on a daily basis.

When consulting the Mohs scale, its important to remember that the gaps between the ten incriminates are not actually equal, even though they are evenly space on the scale. Diamonds are known for being one of the hardness substance on Earth, so hard, that they take the number ten position on the scale. Though only one seat away from corundum, diamond is actually 90 times harder in comparison.  Corundum, which includes Sapphire and Ruby, is five times harder than Topaz which earns the rank directly below it.

Based on the Mohs scale, at Knox Jewelers we always recommend diamond or fancy colored diamond first  in engagement rings or rings worn everyday. Falling in second place, Sapphire, Fancy Colored Sapphire and Ruby are durable enough to be featured in engagement rings or wedding bands. Sapphires are a great way to add a little contrast to your engagement ring, they are available in nearly every hue imaginable. Gemstones rated lower than a nine are not recommended for everyday rings, they could eventually become scratched or scuffed from daily wear.

Gemstones and their Mohs Rating

10Diamond, Fancy Diamond

9Sapphire, Ruby, Fancy Sapphire

8.5 – Alexandrite

8 – Topaz

7.5 – Aquamarine, Emerald, Morganite

7 – Amethyst, Garnet, Tourmaline

6 – Tanzanite

The Mohs scale and hardness are not the only factor to consider when buying gemstone jewelry, but it is an essential factor to help you understand how well that gem will survive years of wear.  At Knox Jewelers, we want your ring to last several lifetimes, and choosing a proper gemstone could aid in that longevity.

If you have any questions about Mohs rankings or the jewelry creation process at Knox Jewelers, please be sure to let us know. We’re always happy to answer any questions you may have, and we look forward to working together with you to design a work of art that will last and be passed down throughout the ages. Contact our friendly and professional staff today, and we’ll get started on the journey of creating your very own, one-of-a-kind piece of custom jewelry.

Platinum – The Ideal Metal

When customers ask what our metal of choice is for their engagement ring, they will always be told Platinum. Platinum has many desirable attributes that will make your ring look spectacular and last a life time.

For reference sake, we use 950 Platinum Ruthenium, which has the best combination of tensile strength (durability) and scratch resistance compared to other Platinum alloys.

Platinum is hands down the best metal to use in jewelry. It’s a very heavy, dense metal, providing a strong hold on stones and solid structural integrity. Platinum does not wear down like other precious metals. When scratched, the metal is actually displaced and pushed elsewhere on the ring, not rubbed or worn off. This characteristic puts Platinum in a class of it’s own, making it suitable for everyday wear over a lifetime and maintaining the greatest security for your gemstones.

Platinum is and will always be white. It will never yellow like white gold, which requires Rhodium plating. It will never tarnish like silver either. Platinum’s natural white color is ideal for settings, from colorless diamonds to vibrant gemstones.

Platinum is also hypoallergenic unlike common white gold alloys which contain nickel. Imagine your finance not being able to wear her ring because she’s allergic to it.

Platinum does not react with Chlorine, unlike white gold, which will corrode and discolor. Chlorine is found in pools, hot tubs, and common house cleaning chemicals.

When making a decision on the right ring, make sure you understand what it’s made of. We want your setting to last a lifetime, protecting the valuable gemstones it holds. No metal does this better then Platinum. With a platinum engagement ring, you don’t have to worry about allergic reactions, chemical breakdowns, or yellowing color. Make Platinum your metal of choice for life.