Dit is wat parels zijn en hoe ze worden gevormd

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Categorieën: Edelstenen

Auteur: OmniaOro

In dit artikel leggen we het natuurlijke proces van het maken van parels uit. En hoe kun je zien of een parel echt of nep is?

Je moet weten dat er twee hoofdcategorieën natuurlijke parels zijn:

natuurlijke zoutwaterparels die zeer zeldzaam zijn en zeker de meest waardevolle van allemaal, omdat ze op natuurlijke wijze worden gevormd, zonder de hand van de mens.

Er zijn tegenwoordig maar heel weinig natuurlijke zoutwaterparels op de markt ( ongeveer 1% ) en ze worden bij toeval ontdekt door schelpdiervissers.

en gekweekte zoetwaterparels (die het meest worden gebruikt in sieraden).

Hoe ze gevormd worden

Natuurlijke parels zijn organisch van aard en worden geboren in een parelweekdier (oester) dat, om zichzelf te verdedigen tegen het binnendringen van een vreemd lichaam dat het zachte weefsel binnendringt, een spontaan immuunproces activeert dat dit externe lichaam bedekt met een stof genaamd "conchiolina". " , welke begint dunne concentrische lagen parelmoer te produceren, die aanleiding geven tot de gelaagdheid van de parel.

Het is bewezen dat een oester 3 tot 4 lagen schelp per dag ontwikkelt, dus het is interessant om te weten dat voor elk kweekjaar de laag van de parel met 0,3 mm groeit.

Pas na een paar jaar kunt u het buitengewone resultaat bewonderen: een prachtige natuurlijke parel.

Belangrijk om te weten is dat onder de duizenden oestersoorten slechts enkele soorten als echte pareloesters worden beschouwd.

De elementen van de evaluatie van een parel

  • Dimensie
  • Vorm en homogeniteit
  • Kleur
  • Oppervlakte uiterlijk
  • Oriënteren

De dimensie

Grootte is het eerste element waarop een parel moet worden beoordeeld. "Onthoud" dat andere factoren gelijk zijn: hoe groter de parel, hoe groter de waarde ervan.

De maateenheid voor parels is de millimeter (mm), en het is mogelijk om de diameter eenvoudig te meten met een duizendste schuifmaat.

Vorm

Hieronder staan alle bestaande parelmaten:

  • Bolvormig
  • ovaal
  • Een halve parel
  • Ovaloïde
  • Knop
  • Druppelvormig
  • Peervormig
  • Geringd
  • Verbonden
  • Ondergedompeld
  • Rijstkorrel
  • Kruis
  • Fantasie
  • Barok
  • Semi-barok

Kleur

Parels worden geleverd met oneindige combinaties van kleuren en tinten, en het is daarom onmogelijk om echte categorieën te creëren.

Hieronder vindt u de zes basishoofdkleuren: Wit , Roze , Crème , Geel, Grijs en Zwart.

Grijze en zwarte parels worden meestal gevonden in gebieden waar het zand donker is. En ze worden geproduceerd door een soort grote pareloester genaamd "black lipped" uit de "margaritiferous" familie.

Terwijl de meest voorkomende tinten variëren van roze en roze-groen.

Oppervlakte uiterlijk

Hoewel parels altijd een ‘organisch materiaal’ en dus natuurlijk zijn, hebben ze nooit een perfect glad en homogeen oppervlak.

Als je een parel onder direct licht onderzoekt, zul je dus zeker strepen of kleine belletjes in reliëf opmerken, dit zijn geruststellende elementen die de hypothese versterken dat de parel echt en dus authentiek is.

LET OP: Hoe perfecter het oppervlak van de parel, hoe waardevoller de parel zal zijn.

Parel Oriënt

De oriëntatie van een parel is de reeks optische elementen (dispersie, breking, reflectie, interferentie en diffusie van licht) die worden opgemerkt door het gebruik van diffuus wit licht bij het observeren van de parel op een uniforme witte of grijze achtergrond.

Als u bij het observeren van de parel een reeks "bewegende" kleuren waarneemt, observeert u de oriëntatie van de parel. Dat alleen een deskundige technicus het kan beoordelen op:

Uitstekend – Goed – Redelijk – Slecht

Hoe herken je een nepparel?

Met deze zeer eenvoudige methode kunt u snel herkennen of een parel authentiek of nep is.

De test bestaat uit het krassen op het oppervlak van de parel met een kleine vijl of het lemmet van een klein mes (als er een gat in zit, is het beter dicht bij het gat te zitten, zodat je de gemaakte krassen niet meer ziet als je hem eenmaal in de ketting hebt gestoken) onmiddellijk begrijpen of het bedekt is met verf of soortgelijke producten.

Als dit het geval is, zul je onmiddellijk merken dat de verf barst en onder elke afdekking de nepparel zit (meestal in transparant plastic).

Zo kun je meteen zien of het om een authentieke of nepparel gaat. Want als de parel natuurlijk is, zul je merken dat het oppervlak van de parel afbladdert als je eraan krabt (het effect is identiek aan wanneer je aan een inktvisbot krabt).

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