Artificial Intelligence (AI) values this gem accordingly:

ChatGPT said:

​Determining the wholesale price of a 4.35-carat tanzanite of medium to high quality involves several factors, including color saturation, clarity, cut, and current market conditions. Wholesale prices are typically lower than retail prices and can vary based on the supplier and the specifics of the gemstone.​

According to data from The Rare Gemstone Company, as of 2025, tanzanite prices per carat are approximately:​

• AAA Grade (High Quality): $550 to $575 per carat​

• AA Grade (Medium Quality): $350 per carat​Jewel Fields+2Tanzanite Jewelry Designs+2navneetgems.com+2

Based on these figures, the retail price for a 4.35-carat tanzanite would be:​

• Medium Quality (AA Grade): 4.35 carats × $350 per carat = $1,522.50​

• High Quality (AAA Grade): 4.35 carats × $550 to $575 per carat = $2,392.50 to $2,501.25​

Wholesale prices are generally 20-40% lower than retail prices, depending on the supplier and quantity purchased. Applying a 30% discount to the retail prices:​

• Medium Quality (AA Grade): $1,522.50 × 0.70 = $1,065.75​

• High Quality (AAA Grade): $2,392.50 × 0.70 = $1,674.75​

Therefore, the estimated wholesale price for a 4.35-carat tanzanite of medium to high quality would range from approximately $1,065.75 to $1,674.75, depending on the specific quality and negotiations with the supplier.​

It's important to note that these figures are estimates, and actual prices can vary based on factors such as the gemstone's exact characteristics, market demand, and the relationship between the buyer and seller. For a precise valuation, consulting directly with a reputable gemstone wholesaler or dealer is recommended.

Tanzanite: A Gem of Rare Beauty

Origin and Rarity

Tanzanite is one of the most exquisite and rare gemstones in the world, found in only one location on Earth: the Merelani Hills at the foot of Mount Kilimanjaro in Northern Tanzania. Discovered in 1967, it was named by Tiffany & Co. after its country of origin and quickly gained fame for its breathtaking color and uniqueness.

What makes tanzanite even more remarkable is its extreme rarity — geologists believe the conditions that created tanzanite are so geologically rare that once current deposits are depleted, there may never be another source discovered. This has led some to call it a "one-generation gemstone."

Color and Pleochroism

Tanzanite is celebrated for its striking color, which can range from deep sapphire blue to rich violet and sometimes flashes of burgundy or burgundy-purple under different lighting conditions. This color-changing quality is due to a gemological phenomenon called pleochroism, meaning tanzanite shows multiple colors when viewed from different angles.

High-quality stones exhibit a vivid blue with violet overtones, often rivaling the finest sapphires in beauty — but with a softer, more velvety appearance.

Gemological Properties

• Mineral Family: Zoisite (a calcium aluminum silicate)

• Hardness: 6 to 7 on the Mohs scale (softer than sapphire, suitable for pendants, earrings, and careful wear in rings)

• Crystal System: Orthorhombic

• Refractive Index: 1.69 – 1.70 (gives the gem its brilliance)

• Specific Gravity: 3.35

• Treatment: Most tanzanite on the market is heat-treated to enhance its blue-violet hue. This treatment is stable and permanent.

Cut and Clarity

Tanzanite is often cut into oval, cushion, emerald, and trillion shapes, with cuts designed to highlight its pleochroism and maximize color return. Fine stones are typically eye-clean, meaning they show no inclusions to the naked eye. Lower-grade stones may have minor inclusions but still display beautiful color.

Symbolism and Meaning

Tanzanite is often associated with:

• Transformation and spiritual growth

• Calmness, insight, and elevated consciousness

• Third-eye and throat chakras in metaphysical circles

Because of its relatively recent discovery, tanzanite has become a modern birthstone for December, alongside turquoise and zircon.

Value and Collectibility

Tanzanite’s value is primarily determined by:

• Color (the deeper and more saturated the blue-violet, the better)

• Clarity (eye-clean is ideal)

• Carat weight (larger stones show deeper color and are rarer)

• Cut quality

Fine stones in larger sizes (5+ carats) can be highly valuable, particularly those with vivid color and excellent clarity. With mine supply decreasing and demand increasing, tanzanite is becoming a sought-after investment stone.

Uses in Jewelry

Tanzanite is often set in:

• Elegant rings

• Statement pendants

• Artistic earrings

• Fine bracelets

It pairs beautifully with white gold, platinum, and diamond accents, enhancing its natural brilliance and cool-toned palette.

A Gem for a Generation

With its captivating color, limited geographic origin, and growing rarity, tanzanite stands as one of the most alluring and meaningful gemstones of the modern era — a treasure from the African earth, destined to become even more prized with time.