Shiraz Jewelry

Shiraz Jewelry

Tuesday, 02 July 2019 22:13


Color: Red with brown tint
Hardness: 7 - 7.5 Mohs
Specific Gravity: 3.65 - 3.80  
Refractive Index:  1.730 - 1.760 

What is Rhodolite?
In simple word, Rhodolite is rose-colored garnet. Rhodolite is a name for red with brown tint mineral pyrope, family of garnet group. They appear as transparent red-pink-purplish gemstones, including all the different color between violet and red. The color, combined with their brilliance, durability (7 to 7.5 Mohs is considered hard enough for jewelry that can be worn everyday), and availability of Rhodolites have brought some strong demand for the gem in the jewelry industry.

Where are Rhodolites coming from?
Most deposits are from Sri Lanka, Brazil, Tanzania, Madagascar, etc.

How much is a Rhodolite?
You'd probably already know that the bigger the carat, the more expensive a stone will be. Also the better the quality (ie: no inclusion, good cutting, great luster) the higher the price per carat. Luckily, Rhodolite is abundant, and the price of Rhodolite can go as low as US$26 per carat or about 800 Baht per carat. Considering the quality, experts expected the price to be appreciated much higher rapidly.

Why are Rhodolite so popular?
Simply because of the color and hardness. They allow you to have a particular look without using rubies, which are extremely much expensive. So next time you visit local jewelry store, ask for Rhodolite if you don't want to spend much. You may find interesting piece that suits your need.


Monday, 01 July 2019 15:22


Color: Pink, red, violet
Hardness: 7 - 7.5 Mohs
Specific Gravity: -  
Refractive Index: 

Rubellite is in fact tourmaline in red or pink color. Classified as 'semi-precious', rubellite is the most valuable tourmaline although green tourmaline is the most desirable color.

Understanding the Price
As you can guess, the price highly depends on size and quality. The bigger the size, the more expensive it is per carat. That goes with the quality too - the cleaner, the more expensive it gets. Luckily, there are large quantities available in the market. Check your nearest jewelry shop for a better price range.

Where are they coming from?
Some Brazilian crystals can reach enormous size but may not be gem quality. Fine ones are from several African countries. Sri Lanka may be the first source of this gem.


Thursday, 27 June 2019 13:26

Spinel Ring

Center Stone: Natural Spinel
Side Stones: -
Metal: 18K White Gold / Yellow Gold
Size:  Free Resizing 

As spinel tend to have fewer flaws than sapphire or ruby, it is ideal for jewelry. The higher demand for spinel makes it one of the most desirable gems in the market. Made by hand, you choose the spinel yourself when making the ring and we will make sure the ring will last.

When you are in Chiang Mai and visiting our store, bring your ideas. We will make your dream engagement ring comes true.

Thursday, 04 April 2019 16:49


Color: Yellow-green, olive green, brownish
Hardness: 6.5 - 7 Mohs
Specific Gravity: 3.27 - 3.37 
Refractive Index:  1.654 - 1.690

It was the early crusaders who brought peridots into Europe during the Middle Ages, and they were very popular. Peridots have been mined for 3,500 years! Now, peridots are everywhere and they are not expensive.

The August birthstone, peridot, has yellow-green or olive green. It was added not long ago in 2016 as the August birthstone along with Sardonyx, and Spinel. Peridot symbolizes strength.

Peridot is a relatively soft stone, ranging from 6.5 to 7 on the hardness scale, making it softer than amethyst or emerald. The stone is also highly sensitive to rapid temperature changes. Because of these, we usually recommend peridot in jewelries that are not for daily use.

Where do Peridots come from ?
Beside from earth, peridots are also come from outer space. A meteorite landed in Siberia back in 1749 with peridot crystals large enough to be set into jewelry. Those mined from earth comes from China, Pakistan, and the United States.

How to clean Peridot jewelry ?
The safest way to clean your peridot jewelry is with warm, soapy water. Do not expose your peridot to drastic temperature changes, which can damage the stone. You should also avoid cleaning peridot in ultrasonic or steam cleaners.

Wednesday, 03 April 2019 12:16

Diamond Engagement Ring

Center Stone: HRD / GIA Certified Natural Diamond
Side Stones: Diamonds
Metal: 18K White Gold / Yellow Gold
Size:  Free Resizing 

These radiant diamond rings are adorned best-of-nature round diamonds. Your style say it all, whether the center diamond to be complimented by side small side diamonds, or simple plain design. Made by hand, we choose the diamonds individually by looking at them each one of them under the loop. The gold setting is strong and sturdy, that you can be sure the ring will last.

When you are in Chiang Mai and visiting our store, bring your ideas. We will make your dream engagement ring comes true.

Monday, 18 March 2019 23:00

Apatite Earring

Main Stone: Natural Apatite
Side Stones: (none)
Metal: Silver, Gold 
Size:  All size 

There is really no limit when it comes to jewelry design. This Apatite earring has unique color suitable for you who is young, modern and stylish. The gem was unearthed in Burma and carefully cut and polished into these beautiful stones. Visit our store to view more designs available. 

Note that apatite is not always available.

Sunday, 17 March 2019 10:59

Ruby Ring with Diamonds

Center Stone: Natural Ruby
Side Stones: 2 x Diamonds
Metal: 18K White Gold 
Size:  Free Resizing 

When we design this ring, we realize that a good quality Ruby is getting more difficult to find. But we love Ruby and pair it with 18K white gold they make a stunning ring. We know exactly what we put in the ring. When you are in Chiang Mai and visiting our store, we show you this ring if you will. 

It doesn't have to be diamond. Ruby can be a great center stone for an engagement ring.

Note that the ruby's weight may vary.

Tuesday, 12 March 2019 13:53


Color: Sapphire blue, amethyst, violet
Hardness: 6.5 - 7 Mohs
Specific Gravity: 3.35 
Refractive Index:  1.691 - 1.700

The name Tanzanite was introduced by the New York jewelers Tiffany & Co after an East African state called Tanzania. The name is accepted by the gems trade, but scientist refer to it as Blue Zoisite. We have to thank Tiffany & Co for disliking the name 'Blue Zoisite' which sounds pretty much like 'Blue Suicide'.

Where do we get Tanzanite gems
Obviously in Tanzania we can see the mines operating to get tanzanite gems. Nowhere else. However, the government of Tanzania banned the export of rough stones weighing more than one gram. Most likely you will see the fine, polished tanzanite gems when you visit your local gems store.

Heat treatment
Most (if not all) tanzanites used in jewelry industry are heat treated. The temperature is usually between 730-390°C for 30 minutes, and the stones should not have any cracks or bubbles, as they could shatter or the cracks/bubble could increase in size during furnace heating. (Ref: Wikipedia)

Other treatment
Recently, coated tanzanites were discovered and tested by the AGTA and AGL laboratories. A thin layer containing cobalt had been applied to improve the color. It was noted that "coatings in particular are not considered permanent", and in the United States are required to be disclosed at the point of sale.


Monday, 11 March 2019 23:47


Color: Colorless, yellow, red-brown, light blue, pinky red, pale green
Hardness: 8 Mohs
Specific Gravity: 3.35 - 3.56
Refractive Index:  1.610 - 1.638

In the past all yellow and brown gemstones were called "topaz". With advancement of technology we can happily distinct topaz from the less valuable gemstones such as citrine. A variety of impurities and treatments may make topaz wine red, pale gray, reddish-orange, pale green, or pink (rare), and opaque to transparent.

Important Topaz deposits in the world
Today's most important mines are located in Brazil, Sri Lanka, Burma, and Russia. Some clear topaz crystals from Brazil can reach boulder size and weight hundreds of pounds.

Most desirable Topaz color is pink and orange
Colored topaz are rarely vivid. The most common color is yellow with a red tint. The most valuable is pink. Orange topaz also known as precious topaz. Some topaz can fade on exposure to sunlight.

Topaz must be carefully handled
Although topaz is very hard, they must must be treated with greater care than some other gemstone of similar hardness (such as sapphire, ruby) because of a weakness of atomic bonding in different planes. This gives topaz a tendency to fracture along such a plane if struck with sufficient force. An experienced stone setting would have a good knowledge on how to set topaz into jewelry.


Thursday, 28 February 2019 23:07


Color: Blue, colorless, pink, orange, yellow, green, purple, black
Hardness: 9 Mohs
Specific Gravity: 3.99 - 4.00
Refractive Index:  1.766 - 1.774

Sapphire is a precious gemstone which is typically blue, but natural 'fancy' sapphires also occur in yellow, purple, orange, and green colors. They occur also in gray and black, and can be colorless.

Sapphires are hard stone at 9 Mohs, making them perfectly suitable for rings, engagement rings, earrings, pendants, or any other jewelries used everyday.


If you can see the tiny lines in this sapphire means the stone is natural and real. Some will dislike it considering...

Posted by Shiraz Jewelry on Sunday, March 31, 2019


Heat Treatment
It is common practice to heat natural sapphire to improve or enhance color. Evidences shown that the practice goes back at least to Roman times. Now, heat treatment often accompanied by beryllium under very high heat (just below the melting point of sapphire).

Synthetic Sapphire
Be aware when you found a sapphire gemstone that is very, very, cheap. The saying, 'if it is too good to be true, then probably it is not true" applies here. They are typically very clean without any inclusions. Visit only your trusted store to ensure you get genuine sapphire. 

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