Stowe Gems
Gem Charts: Significant Dates, Events & Meanings

 

Days of the Week

Sunday:
Topaz
Monday:
Pearl
Tuesday:
Ruby
Wednesday:
Amethyst
Thursday:
Sapphire
Friday:
Emerald
Saturday:
Diamond/Turquoise
Zodiac Gemstones
Signs Stone
Aquarius Garnet
Pisces Amethyst
Aries Bloodstone
Taurus Sapphire
Gemini Agate
Cancer Emerald
Leo Onyx
Virgo Carnelian
Libra Peridot
Scorpio Aquamarine
Sagittarius Topaz
Capricorn Ruby
Birthday/Month Gemstones
Month Stone Meaning
January Garnet Constancy
February Amethyst Sincerity
March Aquamarine Courage
April Diamond/White Sapphire Innocence
May Emerald Love/Success
June Alexandrite/Moonstone Health/Long Life
July Ruby/Chrome Garnet Contentment
August Peridot Happy Marriage
September Sapphire Clear Thinking
October Opal/Tourmaline Hope
November Precious Topaz Fidelity
December Blue Topaz Prosperity
     
Year     Anniversary Gift
1 Gold Jewelry
2 Garnet
3 Pearls
4 Blue Topaz
5 Sapphire
6 Amethyst
7 Onyx
8 Tourmaline
9 Lapis Lazuli
10 Diamond Jewelry
11 Turquoise
12 Jade
13 Citrine
14 Opal

 

 

 
 Year     Anniversary Gift
15 Ruby
16 Peridot
17 Watches
18 Tanzanite
19 Aquamarine
20 Emerald
25 Silver Jubilee
30 Pearl Jubilee
35 Emerald
40 Ruby
50 Golden Jubilee
55 Alexandrite
60 Diamond Jubilee
75 Platinum

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Seasonal Gift
Spring Emerald
Summer Ruby
Fall Diamond
Winter Sapphire
Amethyst - is a gemstone variety of quartz
Birthstone: February
Hardness: 7
Toughness: Good
Specific Gravity: 2.63-2.65
Ref. Index: 1.544 to 1.553
Double Refraction: +0.009
Main Source: Africa, Brazil
Treatment: Routinely heated to enhance its color.
The color should remain stable and not fade.
Reaction to Heat/Torch: Fair, possible color change.
Ultrasonic: Good, rarely a problem
Steamer: Fair, usually no problem

Aquamarine - is a gemstone variety of beryl
Birthstone: March
Hardness: 7 ½ to 8
Toughness: Fair
Specific Gravity: 2.71 (+-.03)
Ref. Index: 1.575 to 1.583
Double Refraction: -0.006
Main Sources: Africa, Brazil
Treatment: Heat treated to get a darker blue color. (color may lighten slightly
if over-exposed to direct light).
Reaction to Heat/Torch: Fair to poor, heat may cause color change.
Ultrasonic: Good, rarely a problem.
Streamer: Good to fair, prolonged use may cause problems


 

 

Diamonds, Gemstones, and Jewelry


        People have worn and loved Jewelry, Gemstones and Diamonds for thousands of years.  Some of the oldest human remains ever found, dating back over thirty thousand years were wearing simple Jewelry adornment, necklaces, bracelets, earrings and rings, some bearing Gemstones and even Diamonds!  Our Gemstone and Diamond Jewelry is the best we can make.  We cut our own Gemstones and Manufacture the finest quality Gemstone and Diamond Jewelry in Vermont.  Our Jewelry starts with original design and timeless style. From there we select the appropriate Gemstone from our vast selection of natural Gemstones from around the world.   In some cases only a custom cut Gemstone from our lapidaries will do. Gemstones are our first love; to us nothing is as beautiful as a Perfectly Cut Gemstone mounted in a expertly made example of Fine Jewelry accented with natures own crisp White Diamond.
        The word Gem is derived from the Greek word GEMMA meaning Flower or Flower Bud, reflecting the ancients appreciation of natures Gemstone perfection.  Not all Gemstones are perfect as-is when they come from the ground for jewelry making.  The art of fashioning gemstones for jewelry has been perfected over thousands of years.  Originally people were trying to improve the level of perfection found in natures Gemstones and to make them more sparkly and attractive.  The art of Cutting Gemstones
and Making Jewelry is alive and well at Stowe Gems!  Diamonds, for instance, when found are not always perfect or even sparkly, it is the gem cutters skill that brings out the full beauty of the rough gemstone and allows the jewelry to take full advantage of
natures inner gemstone beauty.  Jewelry Quality Diamonds are very difficult to cut, and that, combined with the intrinsic rarity of Diamond, has made Diamond perhaps the most treasured of Gemstones.  Diamond is legendary for its hardness, Ten on the Mohs Scales, a Diamond is actually much harder than any known natural substance.  Diamond is also potentially the most transparent substance known, there factors and Diamonds ability to take a uniquely high polish, make Diamond the most south after Gemstone for Jewelry.  The Diamonds we use in jewelry are produced in a manner sensitive to social and political conflict based on personal knowledge and/or relying on information provided by the seller.  Our Diamonds have been produced by legitimate sources of Diamonds not involved in funding conflict and in compliance with United Nations Diamond resolutions, to the best of our knowledge.
        Our Canadian Diamonds are a perfect example of non - conflict Diamonds they are from Canada’s North West Territory Diamond Mines.  These Diamonds have, as a rule, Beautiful White Color and Great Clarity.  These Diamonds are graded the same way as other Diamonds from any other Diamond Producing Region in the World.  Mounted in our Jewelry these Diamonds are Spectacular!
        We import these great Diamonds directly from the Diamond Miners and Diamond Cutters, there are no middlemen as in the traditional Diamond distribution system.  We are very excited about this new source of Diamond, as these Diamonds are supplies out side of any controlling Carte.  This means that Stowe Gems will be able to provide a steady supply of Diamond, as supplies are controlled and restricted even more in the future.

        Diamonds, Gemstones and Jewelry, its what Stowe Gems is all about!

 

 

Gemstone Information

 

All natural gemstones occur in different quantities and qualities. Some gemstones are abundant, while others are rare and found in limited supply. In order to make more rough material usable, sometimes gemstone enhancements are used.
Gem cutting and polishing are considered enhancements, because they are necessary to display the full beauty of a gem. Throughout history countless methods have been employed to improve the appearance of nature's product. In the same way that people want to appear attractive to others, the gem cutter strives to improve the gem.
Stowe Gems only uses the best available material and any enhancements are permanent and stable. For instance, Amethyst is rarely enhanced. However, sometimes overly dark stones can be transformed into beautiful Citrine.
Aquamarine is generally a blueish green color. To improve their popularity, these are heated to produce a more blue color. The heating does not make the stone darker: it only removes the greenish component.
Turquoise is commonly enhanced to prevent the natural blue color from turning to green through wear and skin oils.
Natural Opal is seldom enhanced, but care must be taken when wearing this Gem  because while hard, it can be brittle
.
These gems have not been enhanced by heat,chemicals, radiation, fillers or coatings - we guarantee it!
Bloodstone, Chalcedony, Chrysoprase, Chrome Pyrope Garnet, Color Changing Garnet, Iolite,
Rhodolite Garnet, Mozambique Garnet, Opal,  Spessatite Garnet, Tsavorite Garnet,Moonstone, Nephrite Jade, Mexican Fire Opal,Genuine Black Star Sapphire, Peridot, Genuine Blue Star Sapphire, Precious Topaz.

For additional gem information, please visit the American Gem Trade Association -
http://www.agta.org/

 

Click Here to Visit the Gemological Institute of America

Click Here to Visit the International Gemological Institute

Click Here to Visit the European Gemological Laboratory

 

Gemstone Properties

 

Blue Topaz
Birthstone: December (Alternate)
Hardness: 8
Specific Gravity: 3.52(+.02)
Toughness: Fair to poor
Ref. Index: 1.61 to 1.63
Double Refraction: +0.008 to .010
Main Sources: Brazil, Sri-Lanka
Treatment: Irradiation & Heating (stable)
Reaction to Heat/Torch: Poor, heat may cause color change
Ultrasonic: Fair, extended use may cause problems
Steamer: Fair to poor, prolonged heat may cause problems

Blue Zircon
Birthstone: December
Hardness: 6 ½ to 7
Toughness: Poor
Specific Gravity: 4.15 (+-.15)
Ref. Index: 1.777 to 1.987
Double Refraction: +0.059
Main Sources: Africa & Burma
Treatment: Heat (color may lighten if exposed to direct light)
Reaction to Heat/Torch: Poor, color change may occur
Ultrasonic: Fair, extended use may case problems
Steamer: Poor, prolonged heat may likely cause problems

Citrine - is a gemstone variety of quartz
Birthstone: November
Hardness: 7
Toughness: Good
Specific Gravity: 2.66 (+-.01)
Ref. Index: 1.544 to 1.553
Double Refraction: +0.009
Main Sources: Brazil, Africa
Treatment: Routinely heated to enhance its color. The color should remain stable
Reaction to Heat/Torch: Fair, possible color change
Ultrasonic: Good, rarely a problem
Steamer: Fair, usually no problems

Emerald - is a gemstone variety of beryl
Birthstone: May
Hardness: 7 ½ to 8
Toughness: Poor
Specific Gravity: 2.72 (+-.05)
Ref. Index: 1.57 to 1.58
Double Refraction: 0.006
Main Sources: Africa, Brazil & Columbia
Treatment: Oiling to fill in fractures.
Reaction to Heat/Torch: Very poor
, may draw out oil in fractures!
Ultrasonic: Poor, recommended for very short time only
Steamer: Very Poor

 Garnet - Pyrope, Almandine, Spessartite & Grossular are the most
common varieties.
Birthstone: January
Hardness: 7 to 7 ½
Toughness: Fair to Poor
Specific Gravity: 3.61 to 4.15
Ref. Index: 1.72 to 1.87
Double Refraction: none
Main Sources: Africa, Thailand & India
Treatment: Not currently known to be enhanced
Reaction to Heat/Torch: Fair to Poor, sudden heat may cause fractures
Ultrasonic: Good to Fair, no problem in most cases
Steamer: Fear to Poor, can be risky in larger sizes

Opal - is a gemstone variety of quartz
Birthstone: October
Hardness: 5 to 6 ½
Toughness: Poor
Specific Gravity: 2.15 (+-.09)
Ref. Index: 1.45
Double Refraction: none
Main Sources: Australia, Mexico
Treatment: Not currently known to be enhanced
Reaction to Heat/Torch: Very poor, cracking will occur
Ultrasonic: Poor, not recommended
Steamer: Poor, not recommended

 Fresh Water (Cultured*) Pearl
*Cultured is the method by which man inserts a seed inside a mollusk and
causes it to produce layers of nacre to protect itself against the irritant
(seed) and thus create a pearl. This is done in salt and fresh water.
Birthstone: June
Toughness: Good
Hardness: 3 - 4
Specific Gravity: 2.60 to 2.78
Ref. Index: 1.52 to 1.66
Double Refraction: weak to none
Main Source: Japan, China & South Sea Areas
Treatment: Sometimes bleached or dyed
Reaction to Heat/Torch: Very Poor, will discolor or crack
Ultrasonic: Poor, not recommended
Steamer: Poor, not recommended

Peridot
Birthstone: August
Hardness: 6 ½ to 7
Toughness: Poor
Specific Gravity: 3.32 (+-.05)
Ref. Index: 1.654 to 1.69
Double Refraction: +0.036
Main Sources: Africa, China & USA
Treatment: Not currently known to be enhanced.
Reaction to Heat/Torch: Poor, heat may cause fracturing
Ultrasonic: Fair, do not emerse for extended time.
Steamer: Poor, not recommended.


Precious Topaz - a gemstone variety of topaz
Birthstone: November
Hardness: 8
Toughness: Fair to poor
Specific Gravity: 3.55 (+-.02)
Ref. Index: 1.610 to 1.638 (dbl)
Double Refraction: +0.008
Main Sources: Brazil & Sri Lanka
Treatment: Heat, color may fade slightly in direct light.
Reaction to Heat/Torch: Poor, color change may occur.
Ultrasonic: Fair to Poor, emerse for short time only.
Steamer: Poor, not recommended.


Rhodolite - is a gemstone variety of garnet
Birthstone: January (Alternate)
Hardness: 7 to 7 1/2
Toughness: Fair
Specific Gravity: 3.84 (+-.10)
Ref. Index: 1.76
Double Refraction: none
Main Sources: Africa
Treatment: Not currently known to be enhanced.
Reaction to Heat/Torch: Fair to Poor, sudden heat may cause fracture.
Ultrasonic: Good to Fair, usually no problem.
Steamer: Poor to Fair, not recommended in most cases.

Ruby - is a gemstone variety of corundum
Birthstone: July
Hardness: 9
Toughness: Very Good
Specific Gravity: 4.00 (+-.03)
Ref. Index: 1.76 to 1.77
Double Refraction: -0.008
Main Sources: Thai, Burma, Vietnam, India
Treatment: Heat (stable)
Reaction to Heat/Torch: Very good, should remain stable.
Ultrasonic: Very Good, usually no problems.
Steamer: Good, usually no problems.

Sapphire - is a gemstone variety of corundum
Birthstone: September
Hardness: 9
Toughness: Very Good
Specific Gravity: 4.00 (+-.03)
Ref. Index: 1.76 to 1.77
Double Refraction: -0.008
Main Sources: Thailand, Australia, Sri-Lanka & Africa
Treatment: Heat &/ or Irradiation to enhance color (stable)
Reaction to Heat/Torch: Good, but possible color change.
Ultrasonic: Very Good, usually no problems.
Streamer: Good, usually no problems.

Tanzanite - is a gemstone variety of zoisite.
Hardness: 6 ½ to 7
Toughness: Poor
Specific Gravity: 3.35
Ref. Index: 1.691 to 1.70
Double Refraction: +0.009
Main Sources: Tanzania
Treatment: Heat treated to change color from pale brown to a vibrant
blue/purple (color is stable).
Reaction to Heat/Torch: Very Poor, stone will fracture or break.
Ultrasonic: Poor, very short time only.
Steamer: Very Poor, do not use.

Tourmaline (Pink & Green)
Birthstone: October (Pink-Alternate)
Hardness: 7 to 7 ½
Toughness: Fair
Specific Gravity: 3.12 (+-.10)
Ref. Index: 1.616 to 1.652
Double Refraction: -0.014 to -0.044
Main Sources: Africa & Brazil
Treatment: Heat & Irradiation (color is stable).
Reaction to Heat/Torch: Poor to Fair, stone may fracture.
Ultrasonic: Fair to Good, extended emersion could cause problems.
Steamer: Fair to Poor, some stones has been known to fracture.

Tsavorite - is a gemstone variety of grossularite garnet.
Hardness: 7 to 7 ½
Toughness: Good to Fair
Specific Gravity: 3.60 (+-.08)
Ref. Index: 1.738 to 1.745
Double Refraction: none
Main Sources: Africa
Treatment: None
Reaction to Heat/Torch: Fair, but sudden change in temp may cause fracturing.
Ultrasonic: Good, usually no problems.
Steamer: Fair to Poor, sometimes problems do occur.