VINTAGE Rock Creek MONTANA SAPPHIRE Yellow Faceted round brilliant 1.10 cts src14

Sold by GEMSOFAMERICA
$880.00
+ $15.00 shipping

Only 1 available

$880.00
+ $15.00 shipping
In stock
Preparation takes 1-3 business days
Arrives from the United States
Returns and exchanges accepted
See this seller's return policy

Features
Vintage

Item details

Rock Creek sapphire - a bright, vintage golden yellow Montana sapphire, round brilliant cut, weighing 1.10 carats, with dimensions 6.1 x 6.1 x 4.0 mm. Rock Creek sapphires of good color and over 1 carat are quite rare, and very few are available in the marketplace. Even fewer are available in sizes over 1-2 carats. This gem is very typical for Rock Creek yellow stones, being a multi-hued gem with a 'stripe' of orange running across a yellow body color. There is a tiny 'swarm' of red inclusions near one edge which are likely iron oxide, and an overall "sleepy" aspect due to very fine residual silk that was not completely dissolved in the host during heat treatment.

Sapphire and ruby are both color varieties of the mineral corundum (aluminum oxide), which is colorless when pure. Traces of chemical impurities create a huge range of hues, spanning all the colors of the rainbow as well as many intermediate shades. The red or pinkish-red variety of corundum has a special name: ruby. ALL OTHER colors are called sapphire. The word sapphire derives from the Latin "sapphirus", which means "blue", and so for centuries it was assumed that all sapphires are blue. In recent years all the other colors have become recognized, and available, in the commercial gemstone marketplace, and now "rainbow suites" of sapphires, set in bracelets and rings, have become commonplace in jewelry stores.

Ruby is corundum colored by a trace of chromium. In sapphire, manganese produces pink shades, and the blue color is caused by a combination of iron and titanium. Iron alone results in shades of yellow and green. Many sapphires contain excess titanium, which appears in the form of included tiny needles of titanium oxide (rutile) and is called "silk". (Rutile in larger crystals also occurs in quartz, where it creates amazing bursts and sprays of golden needles). The silk in a sapphire can be removed, and the stone made visually cleaner, by heating (at high temperature the rutile dissolves into the corundum structure).

Joel is part owner of the largest sapphire mine in the western hemisphere, the Rock Creek deposit in Montana. Montana sapphires have been known for more than a century, and in fact were once intensively marketed by Tiffany and Co. Sapphires in Montana occur in many distinct colors, but are usually zoned, with several colors present at the same time. Careful heating removes the silk, but also intensifies the colors and helps to create many distinctive hues, depending on the chemistry of the original crystal. The visual appearance of several colors is a distinctive characteristic of Montana sapphire. In this case the strong lemon yellow color is modified by an intense orange component.

The "precious" stones are generally said to be diamond, ruby, sapphire, and emerald (opal and pearl are sometimes included). The value of these gems is a function of size, color and clarity, with "pure" colors being the most desirable. A Kashmir sapphire is a true rarity, and extraordinarily expensive, because of its intense pure dark blue color, with only a tinge of violet. This lovely yellow Montana sapphire is typical for the locality, but fine quality, displaying a lovely light yellow hue. It has been heated to remove the silk, with no other form of treatment.

Sapphire is the birthstone for September. Surveys of the jewelry industry have been done yearly to assess gemstone popularity, and for the past five years sapphire has been consistently number one on the list.

The price is for the one yellow sapphire, that we guarantee to be from Rock Creek, Montana and heat is the only treatment that has been applied. The shipping cost includes insurance.


FAQs

I sell vintage products that in most cases cannot be replaced. The quality and uniqueness of my items does not allow for negotiation on prices. While I may offer special promotional sales from time to time (such as free shipping on orders at my discretion ), my inventory prices are final as listed.

I have more than 60 years of experience in the world of gems and minerals. I am widely regarded as one of the leading authorities in the world on colored gemstones. After obtaining my Ph.D. in Mineralogy from Harvard University, I was a Smithsonian curator and went on to publish numerous books that are still among the most widely used references and guidebooks on crystals, gems and minerals in the world. The Color Encyclopedia of Gemstones has for 40 years been the world's most authoritative source of information on (and color pictures of) gemstones, including many of the rarest collector gems. You can feel 100% confident purchasing from my shop! Visit my own website for more information about my credentials http://www.joelarem.com

TO RETURN ITEMS: Joel E. Arem P.O. Box 5056 Laytonsville, Md. 20882 Once I receive your returned item, I will issue you a credit to your PayPal account MINUS YOUR SHIPPING COSTS to return them TO SEND A MONEY ORDER: Please make it out to: Joel E. Arem and mail it to me at P.O. Box 5056 Laytonsville, Maryland 20882. I will notify you as soon as it arrives and your order will be shipped.

I am more than happy to mail your purchase directly to the gift recipient! Just add their shipping address in NOTES TO SELLER when you check out, and let me know that it is a gift. And of course I will NOT include a sales receipt in their package. I am happy to include a gift enclosure with your message on it. Just let me know what you'd like me to write for you.

I sell vintage products that in most cases cannot be replaced. The quality and uniqueness of my items does not allow for negotiation on prices. While I may offer special promotional sales from time to time (such as free shipping on orders at my discretion ), my inventory prices are final as listed.

I have more than 60 years of experience in the world of gems and minerals. I am widely regarded as one of the leading authorities in the world on colored gemstones. After obtaining my Ph.D. in Mineralogy from Harvard University, I was a Smithsonian curator and went on to publish numerous books that are still among the most widely used references and guidebooks on crystals, gems and minerals in the world. The Color Encyclopedia of Gemstones has for 40 years been the world's most authoritative source of information on (and color pictures of) gemstones, including many of the rarest collector gems. You can feel 100% confident purchasing from my shop! Visit my own website for more information about my credentials http://www.joelarem.com

TO RETURN ITEMS: Joel E. Arem P.O. Box 5056 Laytonsville, Md. 20882 Once I receive your returned item, I will issue you a credit to your PayPal account MINUS YOUR SHIPPING COSTS to return them TO SEND A MONEY ORDER: Please make it out to: Joel E. Arem and mail it to me at P.O. Box 5056 Laytonsville, Maryland 20882. I will notify you as soon as it arrives and your order will be shipped.

I am more than happy to mail your purchase directly to the gift recipient! Just add their shipping address in NOTES TO SELLER when you check out, and let me know that it is a gift. And of course I will NOT include a sales receipt in their package. I am happy to include a gift enclosure with your message on it. Just let me know what you'd like me to write for you.



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