Gorgeous Light Blue Tanzanite Gemstones - A Rare & Valuable Variety

Introduction to Light Blue Tanzanite

Tanzanite is a beautiful and rare gemstone that comes in a variety of alluring shades of blue and violet. In recent years, light blue tanzanite has become increasingly popular. This gorgeous pale blue gem captures the imagination with its soft icy tones and sparkling brilliance.

Tanzanite belongs to the mineral species known as zoisite. It was first discovered in the 1960s in the Merelani Hills of northern Tanzania, which remains the only source of this precious gemstone. Tanzanite forms under specific geological conditions, when the mineral zoisite undergoes natural heating, causing it to change color from brown to the characteristic blue and violet shades.

While most tanzanite leans towards rich royal blue tones, a small percentage of stones exhibit light pastel blue hues. These rare pale tanzanites stand out with their icy color and vivid fire. The light blue tones have an ethereal quality that feels both modern and vintage.

What Causes the Light Blue Color in Tanzanite

Tanzanite owes its various shades of blue to the presence of trace elements like vanadium within the mineral. The light blue color occurs when there are lower levels of vanadium present. Specific growth conditions also impact the final color, with lighter tones occurring in sections of the tanzanite crystal that cooled fastest.

The vivid sparkle and transparency exhibited in light blue tanzanite is linked to its superior clarity. Stones with very few inclusions allow light to pass through unimpeded, bringing out the full brilliance.

Differences Between Light Blue and Blue Tanzanite

While both share the signature blue tone, light blue tanzanite stands apart from its deeper blue counterpart in some key ways:

• Pastel blue color - Has an icy, pale blue tone compared to rich royal blue
• Lower saturation - More muted and delicate looking color
• Ethereal beauty - Cool, frosted, vintage vibe
• Higher value - Extreme rarity increases desirability and price
• More brilliance - Higher clarity enhances sparkle and fire
• Delicate contrast - Light tone complements all skin tones

Grading Characteristics of Light Blue Tanzanite

Gemologists use several criteria when evaluating and grading tanzanite gems. Here is an overview of the characteristics that determine the quality of light blue tanzanite:

Color

The icy pastel blue is what defines this variety and is the first factor considered. Graders assess the exact hue, tone, and saturation. Stones with an intense, evenly distributed light blue color command the highest value.

Clarity

A high clarity grade indicates few inclusions and blemishes inside the stone. Light blue tanzanite with exceptional clarity will have vivid brilliance and fire.

Cut

Precision cutting is needed to maximize the light return and beauty of the gem. Well-cut light blue tanzanites have excellent polish and symmetry.

Carat

Larger carat weights are rare and desirable in light blue tanzanite. Most cut gems range from 0.5 to 5 carats.

Unique Properties of Light Blue Tanzanite

This lovely gemstone has some special properties that add to its intrigue:

Trichroism

Tanzanite exhibits trichroism, which means it shows three colors depending on the viewing angle. Light blue tanzanite displays pale blue, vivid blue, and subtle violet hues.

Dichroism

This variety also displays dichroism, with the stone appearing blue when viewed from one direction but colorless from the other direction perpendicular to the first.

Pleochroism

In polarized and filtered light, light blue tanzanite shows differing intensities of its blue and violet colors, a phenomenon known as pleochroism.

Thermochromic

Tanzanite exhibits a thermochromic effect - when heated it temporarily becomes colorless but regains its blue color upon cooling.Jewelers must be careful when working with tanzanite to avoid damaging its color.

Ideal Cut for Light Blue Tanzanite

To maximize the brilliance and beauty of light blue tanzanite, professional gem cutters recommend these ideal cutting styles:

Round Brilliant

The classic round cut with precisely arranged facets optimizes light return. It creates exceptional sparkle.

Oval

This elongated shape works well with the prismatic nature of tanzanite, generating flash and fire.

Cushion

Combining a square outline with rounded corners, the cushion cut also produces excellent brilliance in light blue tanzanite.

Jewelry Applications for Light Blue Tanzanite

Jewelry designers appreciate the versatility of this rare gemstone. Its pastel tone and sparkle complement both casual everyday pieces and elegant fine jewelry. Here are some popular ways to wear light blue tanzanite:

Tanzanite Solitaire Pendant

A simple solitaire pendant allows the icy beauty of the gem to take center stage. White metals like platinum or white gold enhance its color.

Tanzanite Halo Ring

Surrounding the center stone with a halo of smaller tanzanites amplifies the dazzling effect. Excellent for engagement rings.

Tanzanite Eternity Band

Lined with a row of light blue tanzanites, this anniversary or stackable ring makes a stunning style statement.

Tanzanite Tennis Bracelet

Matching light blue tanzanites create a chic bracelet with timeless elegance. The blue gems pop against the skin.

Tanzanite Cluster Earrings

Graduated clusters graduating down from the earlobe showcase these rare gems and make a striking fashion accent.

Caring for Light Blue Tanzanite Jewelry

While a durable stone overall, light blue tanzanite requires some special care. Here are some tips for keeping your tanzanite jewelry sparkling like new:

• Avoid excessive heat - Don't leave pieces near heat sources which can cause color change
• Protect from knocks and scratches - Hard blows can chip or fracture the gem
• Clean with mild soap - Use a soft brush and avoid ultrasonic or steam cleaners
• Take care with faceting - Have an experienced jeweler handle any repairs or enhancements
• Store properly - Keep pieces in soft cloth pouches separate from other gems

The Allure of Light Blue Tanzanite

With its rare icy pastel hue and exceptional brilliance, light blue tanzanite captivates jewelers and gem lovers. The delicate color palette feels both vintage and contemporary. From everyday earrings to elaborate engagement rings, this special gemstone elevates any jewelry design. As tanzanite supplies diminish over time, these exquisite light blue stones will only become more cherished.

FAQs

What causes the light blue color in tanzanite?

The light blue color in tanzanite is caused by lower levels of trace elements like vanadium within the gemstone. Specific growth conditions that allowed the crystal to cool quickly also impact the light blue color.

Which is more valuable, light blue or blue tanzanite?

Light blue tanzanite is more rare and valuable than regular blue tanzanite. Its pale icy color is highly desirable and the lower availability of quality stones increases prices.

What is the average carat size for a light blue tanzanite?

Most cut light blue tanzanite gems range from 0.5 to 5 carats in size. Larger carat weights over 5 ct are very rare and valuable.

What are the best ways to care for light blue tanzanite jewelry?

Avoid exposing tanzanite to heat, hard knocks or scratches. Use mild soap and a soft brush to clean. Store pieces separately in soft cloth pouches. Have an expert jeweler handle any repairs.

What jewelry looks best with light blue tanzanite?

Simple settings like solitaire pendants and halo rings help showcase this gem. Eternity bands and tennis bracelets also complement the icy blue color beautifully.