18.97 Ct. Mexican cantera fire opal Cabochon

Item Information

Dimensions (mm) 24 x 16 x 7mm
Weight (carats) 18.97 carats
Colors

DESCRIPTION: FreeForm Magdalena cantera Fire opal 18.97 Carats.

Item Type: SOLID NATURAL cantera opal
This is a Cantera Fire opal from Magdalena Jalisco. Origin: MEXICO

Opal Size: 24 x 16 x 7 mm. APPROX

WEIGHT: 18.97 CTS APPROX

Treated/Untreated: Untreated.

PLEASE NOTE: With the contra luz variety of Mexican Crystal opal the internal rainbow colored fire is best viewed in transmitted light ( light entering stone from behind), rather than reflected light ( light shinning on stone from in front) and although with some stones of this variety rainbow fire may be visible in reflected light, the fire is NOT VISIBLE in ordinary lighting.

This stone will display nice internal rainbow colored fire when viewed with strong direct transmitted lighting, lightly visible in direct reflected lighting, but best viewed with light source entering stone from behind, such as from a ray of sunlight or even by holding stone up to an ordinary lamp light and moving stone back and forth. . Custom cut about 4 years ago from rough well seasoned and so very stable, stone . Valuable opal variety.

Photo taken with an ordinary digital camera with a ray of sunlight entering stone from behind at at a slight angle to best show fire. Color has not been enhanced - but note that rainbow fire is NOT VISIBLE in ordinary lighting.

4d 12h 25m 35s

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Pricing & Details

Bid Increment $1.00
Starting Bid $45.00
Auction ID 514198
Watchers 3 watching
Viewed 479 times
Starts 23rd Sep 2017 12:38pm PDT
Ends 30th Sep 2017 12:35pm PDT

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