No reserve price - 1 pcs Blue, Violet Tanzanite - 1.05 ct - International Colored Gemstone Association (ICA GemLab)

No reserve price - 1 pcs Blue, Violet Tanzanite - 1.05 ct - International Colored Gemstone Association (ICA GemLab) #1.0
No reserve price - 1 pcs Blue, Violet Tanzanite - 1.05 ct - International Colored Gemstone Association (ICA GemLab) #1.0
No reserve price - 1 pcs Blue, Violet Tanzanite - 1.05 ct - International Colored Gemstone Association (ICA GemLab) #2.1
No reserve price - 1 pcs Blue, Violet Tanzanite - 1.05 ct - International Colored Gemstone Association (ICA GemLab) #3.2
No reserve price - 1 pcs Blue, Violet Tanzanite - 1.05 ct - International Colored Gemstone Association (ICA GemLab) #4.3
01
day
23
hours
11
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09
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Current bid
€ 1
No reserve price
Alberto Fidalgo
Expert
Selected by Alberto Fidalgo

Qualified goldsmith, gemmologist and diamond dealer with over fifteen years experience.

Retail Estimate  € 250 - € 300
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Natural Tanzanite, 1 stone, total weight 1.05 ct, pear shape, blue-violet color, transparent.

AI-assisted summary

Description from the seller

Natural Tanzanite – 1.05 ct | Blue-Violet | Pear Cut

A beautiful natural Zoisite, variety Tanzanite, weighing 1.05 carats. The gemstone features a transparent blue-violet color and an elegant pear shape, enhanced by a modified brilliant cut.

Gemstone details:

* Species: Natural Zoisite
* Variety: Tanzanite
* Weight: 1.05 ct
* Color: Blue-violet
* Shape: Pear
* Cut: Modified Brilliant / Modified Brilliant
* Transparency: Transparent
* Dimensions: 7.87 × 5.86 × 3.72 mm
* Phenomena: None
* Treatment: See comments
* Laboratory: ICA GemLab
* Report: TH26G114774
* Report date: 26 February 2026

Treatment disclosure: The laboratory report states that Tanzanite is commonly heated to improve or change the color and that color authenticity is currently undeterminable.

The stone was examined using microscopy and UV/VIS/NIR spectroscopy.

The gemstone shown is the stone described in the accompanying laboratory report.

Natural Tanzanite – 1.05 ct | Blue-Violet | Pear Cut

A beautiful natural Zoisite, variety Tanzanite, weighing 1.05 carats. The gemstone features a transparent blue-violet color and an elegant pear shape, enhanced by a modified brilliant cut.

Gemstone details:

* Species: Natural Zoisite
* Variety: Tanzanite
* Weight: 1.05 ct
* Color: Blue-violet
* Shape: Pear
* Cut: Modified Brilliant / Modified Brilliant
* Transparency: Transparent
* Dimensions: 7.87 × 5.86 × 3.72 mm
* Phenomena: None
* Treatment: See comments
* Laboratory: ICA GemLab
* Report: TH26G114774
* Report date: 26 February 2026

Treatment disclosure: The laboratory report states that Tanzanite is commonly heated to improve or change the color and that color authenticity is currently undeterminable.

The stone was examined using microscopy and UV/VIS/NIR spectroscopy.

The gemstone shown is the stone described in the accompanying laboratory report.

Details

Number of stones
1
Lab report number
TH26G114774
Gemstone type
Tanzanite
Total carat weight
1.05
Gemstone colour
Blue, Violet
Transparency
Transparent
Clarity grade
Eye clean
Treatment
Not specified in the report
Origin as given on certificate
No origin given
Laboratory report
International Colored Gemstone Association (ICA GemLab)
Sealed by laboratory
No
Shape
Pear
GermanyVerified
22
Objects sold
3
Objects in auction
5
Reviews
Private

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