
Zircons of various colors and cuts are available in our Bangkok and Moscow stocks. Fine selection, high quality, best prices. Worldwide delivery.
Zircons are rare minerals with a wide variety of colors. Some gems come in golden-yellow, red, brown, yellowish-green and sky-blue colors. The color palette of minerals is created by admixtures of different metals, such as iron, copper, zinc, calcium or titanium. Natural zircons are small, pointed crystals with a regular edge.
Transparent colorless zircons are characterized by a high index of refraction and strong dispersion. When these stones are cut well, they resemble diamonds. They sparkle under the rays of light that fall on their facets. The play of light is more noticeable in the pale crystals. Stones of darker shades play worse.
The gemological uniqueness of zircons consists of a considerable variation of density and light refraction, which goes far beyond the results attributed to differences in the chemical composition or to the presence of voids in the crystal structure.
Experts consider zircon one of the most undervalued gems on the market and predict an increase in value. The precious zircon is yet to reach its maximum market potential; we believe it has only a few years left. Already we see an increase in demand for this stone not only among collectors but also among big-name jewelry houses that release limited editions and collections with this beautiful gemstone. Zircon jewelry from the German company Hemmerle is famous all over the world.
Prices for zircons vary in color varieties, but the main pricing factors are: the weight of the stone, clarity, cut and most importantly - the degree of saturation of color. The most expensive variety is the blue Cambodian zircons. Large rich-blue, almost blue, quality-cut samples may cost $280-450 per carat. Lighter coloring ranges from $150 to $280 per carat. Yellow, red, brown, and colorless zircons cost an average of $100-200 per carat.
Jewelry zircon is mined only in a few fields. The best minerals come from Cambodia and Sri Lanka. The gems from these countries have the most diverse color palette that includes instances of a reddish-brown, yellow and green. Interestingly, all Starlite arrive on the market exclusively from Cambodia. Most of the gems becomes colorless color after refining by heat treatment. Along with this produces a small amount of natural colorless zircons in the area called Matara in southern Sri Lanka. Gem of good quality is mined in the deposits in Burma, Thailand, Tanzania, Madagascar and Vietnam.
Note that the zircon blue, Golden-yellow and colourless crystals, which is now at the peak of popularity are sanitized reddish-brown minerals from Cambodia. Interestingly, the results of heat treatment of the crystals are highly resistant.
The raw material of zircon is brown or, less frequently, orange in color. Zircon mined material acquires a blue color after being annealed in special furnaces. The color of zircons changes color to colorless, yellow, or orange after heating. Mineral zircons are heat-treated for over 90% of their color. Thermal treatment of zircons is generally accepted by the gemological community and does not affect their value, similar is the case with tanzanites. Heating takes place in a homemade box furnace, where a refractory container with raw material is placed. The container protects the crystals from direct flame, which prevents the raw material from cracking. The process takes only a few hours. Sometimes the crystals are heated in two steps to correct their color. The color change as a result of annealing is stable.
The rare natural stone zircon, because of the similarity in name, is often confused with cubic zirconium (cubic zirconia), a cheap synthetic stone that is used as an imitation of a diamond. This is not the only name confusion that arises among buyers. Zircon is also confused with the similar-sounding zirconium, which is indicated as Zr in the Mendeleev table.
To summarize:
Jewelry with zircons from German company Hemmerle and other lesser-known brands are known all over the world. The designers of the jewelry houses make exclusively exclusive pieces.
GEMSTOCK.ORG COMPANY LIMITED, Tax ID: 0105561148825
919/1, Jewelry Trade Center, 2nd Floor, Room No. 201, Si Lom Road, Si Lom Sub-district, Bang Rak District, Bangkok, Thailand 10500
+66613953588
