Is cobalt blue spinel valuable?

Is cobalt blue spinel valuable?

Although cobalt blue spinels do owe their vivid color to traces of cobalt, it’s the color that makes them valuable, not the presence of that coloring agent. If your spinel has a rich saturated blue color, it is rare and valuable whether or not it contains traces of cobalt.

What gem is cobalt blue?

The traditional gemological technique for distinguishing natural from synthetic blue spinel has involved the use of refractive index and absorption spectra.

What color spinel is most valuable?

The crystal structure of spinel is isometric, and its crystal habit is octahedral or twinned octahedral (macles) and to a lesser extent, cubic or dodecahedral. Red is the most valuable color, followed by orange red, pinkish red and purplish red.

What is blue spinel worth?

The value and pricing of spinels is gauged through the above five quality factors….Spinel Price Guide.

Colour Carat Price Per Carat (USD)
Red 1.0 – 5.0 $800 – $5000
Jedi Pink – Burma 1.0 – 5.0 $800 – $5000
Hot Pink 1.0 – 5.0 $500 – $3000
Cobalt Blue – Vietnam 0.8 – 3.0 $2000 – $8000

How do you identify cobalt blue spinel?

Pure blue color in a natural Spinel is a sure sign that the gem is a genuine Cobalt Spinel. But whether iron of cobalt is the dominant chromophore may not always be obvious simply by looking at the color, or by checking the absorption spectrum with a hand-held spectroscope.

Where is cobalt blue spinel found?

Blue spinels are mined in Sri Lanka, Tanzania, Myanmar, Pakistan, and Vietnam (Shigley and Stockton, 1984; Delaunay, 2008; Pardieu and Hughes, 2008). Vietnam’s two major spinel deposits, Luc Yen and Quy Chau, were discovered at the end of the 1980s.

Are spinels good investment?

Red Burmese spinels and the neon pink-red spinels from Mahenge, Tanzania have the best investment potential. Spinel is completely untreated and prices on fine pieces have risen significantly in the last 5 years.

How can you tell if a blue spinel is real?

The proper way to analyze whether Spinel is real is to put it under a UV Radiation Light. Set it to long-wave and look for any stones that are particularly glowy. If the stones are glowy, that means it’s synthetic and not natural.

Are spinels more expensive than diamonds?

The black spinel is a seldomly seen gem, and because it is commonly mistaken for black diamonds due to its opaque, jet-black appearance, it becomes even more hidden in the market….Black Spinel vs Black Diamond.

Black Spinel Black Diamond
Price $200-$500 $2,000-$4,000
Size various sizes various sizes

How much is spinel worth?

Top Spinels in the 2 to 5 carat size will often sell for $3,000 to $5,000 a carat. For the very rare stones over 5 carats, prices in the range of $8,000 to $10,000 per carat are not unusual for the top colors.

Is blue spinel the same as aquamarine?

This chameleon quality means you’ll love the way it looks with almost everything in your closet. Unlike aquamarine, the gem it most resembles, aqua blue spinel doesn’t need to be over five or ten carats in size to have a lovely color.

Is cobalt spinel rare?

Cobalt Blue Spinel from Luc Yen mine in Vietnam is the rarest and most desirable fine stone, and the biggest hype in the modern gem industry.

Why is spinel so expensive?

Interestingly, red spinel is much rarer than rubies, but due to its extreme rarity there is little demand for it and therefore it is not as valuable. As with any gemstone, spinel with even saturation and intense hue are the most valuable.

How can you tell fake spinel?

How do you check a cobalt spinel?

Cobalt shows slightly different absorption features on a spectrometer graph than does iron. High cobalt content also causes Spinel to appear bright pink under a Chelsea filter, or even bright red when the concentration of cobalt is high enough. Cobalt Spinels also fluoresce pink or red under long wave UV light.

What is cobalt spinel?

One of the most prized varieties of Spinel, this Cobalt Blue Gem from Ceylon features the distinctive hue and coveted name on the report. Faceted as an oval, the Natural Cobalt Spinel displays great luster and clarity, and the rare size for this precious material two and a half carats. Stone type: Spinel.

Is spinel a good investment?

Is spinel a cheap stone?

Although spinel is still less expensive than ruby, the market for spinel has been increasing. And, now that spinel has been added as a third August birthstone, its popularity may increase further still, bringing its value up as well.

Is cobalt Spinel rare?

How can you tell if a blue Spinel is real?

What is blue spinel with dolomite?

The blue spinel with dolomite is covered in black calcite. This is a special stone because it happens naturally and is one of the few in the market. It contains high levels of iron, which can turn the stone color dark. It may appear blue-gray or violet-blue rather than blue stone. Blue Spinel qualities of strengthening emotional power.

Is the blue spinel gemstone right for You?

In the gemstones domain of intellectual power, one can regulate the powers of the blue spinel. This will help to reduce or eliminate any doubt about incompetence. This stone is right for you if you want your religion to be nurtured.

What are the different types of blue spinels?

Mostly Blue spinels are natural stones and free from modifications by any human being. Other blue stones that are inverted similar to it are Tanzanite, Sapphire, and Aquamarine.