No reserve price - 1 pcs Blue Amethyst - 18.35 ct - Antwerp Laboratory for Gemstone Testing (ALGT) - Intense Purple

00
days
20
hours
32
minutes
43
seconds
Current bid
€ 18
No reserve price
Francesca Floramo
Expert
Selected by Francesca Floramo

Graduate gemmologist from GIA with 20 years jewellery experience, specialising in brand jewellery.

Retail Estimate  € 330 - € 400
IT
€18
AT
€15
IT
€15

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Amethyst, a single transparent triangle with a mixed cut, a total weight of 18.35 ct, intense purple colour, no indications of treatment, documented in ALGT laboratory report 28225442.

AI-assisted summary

Description from the seller

ALGT Colored Stone Identification Report n. 28225442 (25 September, 2026)
Natural Quartz
Amethyst
Triangle Shape, Mixed Cut
Ct. 18.35
Intense Purple
Transparent
No Indications of Treatment

Seller's Story

Private collector. Offers selected colored gems.

ALGT Colored Stone Identification Report n. 28225442 (25 September, 2026)
Natural Quartz
Amethyst
Triangle Shape, Mixed Cut
Ct. 18.35
Intense Purple
Transparent
No Indications of Treatment

Seller's Story

Private collector. Offers selected colored gems.

Details

Number of stones
1
Lab report number
28225442
Gemstone type
Amethyst
Total carat weight
18.35
Gemstone colour
Blue
Transparency
Transparent
Treatment
No evidence of treatment
Laboratory report
Antwerp Laboratory for Gemstone Testing (ALGT)
Sealed by laboratory
No
Title additional information
Intense Purple
Shape
Triangle
Cutting style
Mixed cut
Sold by
ItalyVerified
1941
Objects sold
99.52%
Privatetop

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