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How the hardness of gemstones matters

Posted on July 31, 2015 by Shayna Gavin, Jewellery Designer, Sky with Diamonds

We specialise in helping to bring your jewellery ideas to life

Call it custom design, made it order, or bespoke jewellery, we love to turn sketches into beautiful pieces of jewellery. 

One of the biggest considerations is the gemstones you use. 

Rings that will be worn most days, for many years, need to be carefully designed. 

  • for their beauty
  • sentimental value
  • and longevity!

This is especially important for engagement rings

The stones used in jewellery need to be durable enough to withstand daily wear. 

Gemmologists use the Moh's scale of hardness. In this context, we are talking about hardness meaning ability to resist scratching.

For example: 

1  Talc can be scratched by a fingernail
2 Gypsum can be scratched by a fingernail
3 Calcite can be scratched by a copper coin
4 Fluorite can be scratched by a knife
5 Apatite can be scratched by a knife
6 Felspar can be scratched by a steel file
7 Quartz will scratch window glass
8 Topaz
9

Rubies, sapphires

10 Diamond

 

Those higher up the scale will scratch those below.

For rings intended to be worn most days, like an engagement ring, we would like the stones to have a hardness of 7 or greater.

If you love a gemstone which is lower on the Moh's scale, it can be worn in a pendant, or as earrings, where it will be subjected to much fewer wear and tear forces.

How does this relate to wearability?

Hardness is only one factor related to wearability. Other things to consider include: 

  • heat sensitivity eg. opals
  • how brittle a gemstone is, and how easily they chip eg. apatite
  • chemical sensitivity eg. turquoise and pearls, which are soft and porous
  • the setting you will use on a ring eg. a high set solitaire stone will be subjected to far more knocks in its life, even if worn only on dress occasions. This is best reserved for very durable gemstones, like diamonds

Further resources: 

This is a great resources with more information about the Moh's scale, and how it relates to hardness and wearability

The International Gem Society's website has many gemstones listed where you can see all information about them, including their hardness. 

 

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Finding your perfect coin

Posted on March 19, 2015 by Shayna Gavin, Jewellery Designer, Sky with Diamonds

Our coin bracelets and necklaces are proving to be a popular way to celebrate birthdays and special anniversaries. They're also selling well as a beautiful fashion item. And the sixpences are a lovely gift for a bride: 
"Something old, something new, something borrowed, something blue, and a silver sixpence for her shoe". The tradition was to put a sixpence in the bride's shoe, but many are choosing to wear them for luck :-)

We can do a range of bracelet or necklace styles, in sterling silver, white gold, rose gold or yellow gold. And of course, we are very happy to custom design something for you.

We have a limited selection of coins available to use, from my grandfather's coin collection (pennies, sixpences, florins) and some reproduction coins in sterling silver. Here's some examples:

We set this coin from Zimbabwe that had a special sentimental value for a customer recently as a personalised Valentine's Day gift. Read more about that story here.

If you are after a particular year or type of coin, internet shopping is your friend!

The Royal Australian Mint sells these penny tokens in all years from 1965 onwards (since Australia moved to decimal currency). They also have a range of special edition, uncirculated coins, and coins made in sterling silver and gold

Or get a beautiful personalised coin for your newborn with their initial on the design!

We also find ebay very useful. If I just type in 'coin 1965' many options from around the world come up, including some from around the $10 mark. There's some stunning designs!

Whatever coin you love, we can set it for you, and create a beautiful piece of jewellery.

Just get in touch and we'll do our best to bring your jewellery ideas to life. 

 

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A sentimental Valentine's day coin

Posted on March 18, 2015 by Shayna Gavin, Jewellery Designer, Sky with Diamonds
A customer contacted us with a very special request for  Valentine's day gift.
Having loved our coin jewellery, he wanted to know if we could set his own coin?
Of course! We can do nearly anything ;-)
This coin is from the couple's travels in Zimbambwe. 
Since they live in Adelaide, it needed to do a little extra travelling by registered post. 
I polished the coin as best I could, set it in a sterling silver surround, and had it back to them ready for Valentine's day. 
It's a good example of how we can custom design jewellery with a great result as an online business, no matter where you live!
I'm pleased to hear it was a well received surprise :-) 

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Flowers and jewellery!

Posted on February 10, 2015 by Shayna Gavin, Jewellery Designer, Sky with Diamonds
Did you know we do flowers as well as jewellery? 
Remember all those lovely flower arrangements in the shop? Well that was us :-)
We've been busy over the summer doing jewellery and flowers for some gorgeous weddings, and we'll look forward to sharing some more great photos with you soon. 
And now we're excited to be offering flowers for Valentine's Day delivery in Melbourne. 
  
We're offering free jewellery delivery along with your flowers on the day too*. Just choose that shipping option when you go through the cart. 
(*Of course custom orders will need a bit longer to get ready,
so they're ineligible for this promotion. Sorry!)
Looking forward to getting together some beautiful Valentine's Day presents :-)

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