Chiang Mai is located in the mountaineous region of Northern Thailand. It is rich in culture everywhere you go. But while on the trip to Chiang Mai and you're feeling hungry, don't miss this the opportunity to visit Nat Wat Home Cafe.
Located on 330/2 Charoenrat Road, Watket district of Chiang Mai, this cafe offers great value for money. Our team members have personally visited the cafe few times, and we love the food and the coffee. It's mixture of modern and loft style with nice and spacious airy space around. If you decided to go there, the best way is to take any ride-sharing app like Grab.
A review from TripAdvisor user, mrt103 :
Best western breakfast in town. Really inventive breakfast menu with amazing presentation and attention to detail. The chef has a really good grasp of western cuisine and what flavours work well together.
Here is a video to visualize our experience at Nat Wat Home Cafe.
Color: Varying red
Hardness: 9 Mohs
Specific Gravity: 3.97 - 4.05
Refractive Index: 1.766 - 1.774
Ruby is named because of its red color. The red color varies with the individual deposits, so it is not possible to determine the source area from the color, as each deposit yields various tones.
The designation "Burma-ruby" or "Siam-ruby" is erroneous, and refers more to quality than origin. The most desirable color is "pigeon's blood", pure red with a hint of blue.
All natural rubies have imperfections in them, including color impurities and inclusions of needles known as 'silk'. We use these needle inclusions in rubies to distinguish them from synthetics. It is extremely common and acceptable now that almost all rubies are treated in some form, with heat treatment being the most common practice.
Center Stone: Natural Blue Sapphire 1.75ct
Side Stones: 14 x Diamonds 0.32ct
Metal: 18K White Gold
Size: Free Resizing
Since 1982 all Shiraz's engagement rings are made by hand, including this special one. Made as a replica of England's famous royal engagement ring, it is trully a ring you can expect to last and a head turner. The side diamonds around the center stone are individually selected and carefully placed by hand. Visit our shop to inquire.
Note that the blue sapphire's weight may vary. Metal options are yellow and white 18K gold. Large sapphires are rare and they are sometimes named in the same way as famous diamonds.
Color: Colorless, yellow, brown, orange, red, violet, blue, green
Hardness: 6.5 - 7.5 Mohs
Specific Gravity: 3.90 - 4.71
Refractive Index: 1.777 - 1.987
Records shown that Zircon has been used as gemstone since the beginning of history. Carved zircons have been recovered from some of the most ancient archaeological sites. Because of its high refractive index and strong dispersion, it has great brilliance and intense fire. It is brittle and therefore sensitive to knocks and pressure.
How much is a Blue Zircon?
From THB 300 (+/-US$ 12) per carat to THB 7,000 (+/-US$ 244) per carat. Top price per carat is virtually unlimited depending on the carat size, clarity, and color. Prices we mentioned are indication only based on what we have observed in the market in 2021. Check here if you are looking to buy loose Thai blue zircon.
How hard is Blue Zircon?
The hardness is 6.5 - 7.5 on the Mohs scale, however zircon is very brittle and should be handled and worn with great care. It is sensitive to pressures and knocks, and will show signs of wear along the facet edges. Stones in a parcel that are roll against each other may show damage on the facet edges.
Where to buy Blue Zircon?
Thailand, Cambodia, Myanmar and Australia are the sources for high quality gem-type zircons. Some other sources includes Sri Lanka and Malagasay Republic. Zircon itself is NOT a rare mineral, and occurs throughout the world. Bangkok is the cutting and heating center for zircon.
Is Blue Zircon burned/heated?
In short: Yes. Colorless zircons are naturally exist. Unless explicitly mentioned, most blue and colorless stones are the result of heat treatment.
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This is a Blue Zircon from Thailand. The primary sources for zircon are Cambodia and Thailand, where it is found as waterworn pebbles colored reddish-brown to yellowish-brown. The pebbles are heated in primitive coal-burning ovens, sometimes several times. The treatment causes a color change, producing blue, golden-yellow, and colorless material. Bangkok is a cutting and heating center for zircon. Low-type zircon of gem quality is found in Sri Lanka, as worn pebbles in the gem gravels. (Source: Gems and Jewelry, Joel Arem, 1975). #bluezircon #pebbles #heattreatment #thailand #cambodia #gemsandjewelry #gemscutting #chiangmai #shirazjewelry
Naturally most zircon are gray-brown and red-brown. Heat treatment changes to colorless and blue Zircon. Occasionally red or orange stones appear on the market, but these colors are natural and not produced by heating.
What can you do with it?
Anything from ring, pendant, earring, and bracelet will look beautiful with zircon. The refraction index of zircon is very high. If cut as round brilliants, zircons have steely brilliance and dispersive color. These stone can easily be mistaken for diamonds at first glance. However, zircon is very brittle and susceptible to damage when worn in a ring. Small zircon may be used as side stones in jewelry, in place of diamond chips.