Tanzanite

Color: Tanzanite belongs to the zoisite family and is known for its impressive blue violet color. The shade ranges from soft lavender blue to deep violet blue, depending on the angle of light. This color is caused by traces of vanadium within the crystal.

Hardness: 6 to 7 on the scale of Mohs. Tanzanite is relatively hard but can be sensitive to impacts or sudden temperature changes. It is recommended to handle it with care and protect it from hard knocks.

Location: Tanzanite is found in only one region in the world, the Merelani Hills near Mount Kilimanjaro in Tanzania. This unique origin makes the stone rare and popular.

Types and Characteristics:

• Blue tanzanite: The most valued variety; intense blue with a subtle violet glow.

• Purple tanzanite: Displays a softer, more lavender like tone; elegant and refined.

• Light tanzanite: Lighter varieties with a bright, sparkling appearance.

Inclusions: Tanzanite may contain fine needle like inclusions or small fracture lines, which are characteristic of the stone’s natural formation. These inclusions rarely affect its beauty unless they are clearly visible to the naked eye.

Value: The value of tanzanite is determined by color intensity, clarity, size, and cut. Deep, pure blue violet stones are the most valuable. Because it is found only in Tanzania, tanzanite is considered a rare and exclusive gemstone.

Topaz

Color: Topaz is found in a wide range of colors, including colorless, blue, yellow, pink and orange. The color is caused by traces of elements such as chromium, iron, or titanium. The most valued topaz stones have a vibrant and pure color.

Hardness: 8 on the scale of Mohs. Topaz is a hard and durable gemstone, suitable for everyday wear in jewelry. However, it can fracture if struck hard, so careful handling is recommended.

Location: Major sources include Brazil, Pakistan, Russia, Sri Lanka, Myanmar, Nigeria, and the United States. Brazil is especially known for producing topaz in a variety of colors and excellent quality.

Types and Characteristics:

• Sky Blue Topaz: Light blue tone with a fresh, airy appearance; often bright and sparkling.

• Swiss Blue Topaz: Medium blue color with vivid intensity; popular for its intense sparkle.

• London Blue Topaz: Deep blue with a grayish undertone; elegant and luxurious in appearance.

• Imperial Topaz: Orange to pinkish orange color; rare and highly valuable.

• Colorless Topaz: Transparent and sometimes used as an alternative to diamond.

Value: The value of topaz is determined by color, clarity, size, and rarity. Deeply colored stones, especially Imperial Topaz, are the most valuable. Blue and colorless topaz are more common and therefore more affordable, yet remain popular for their brightness and brilliance.