Calcareous Concretion (Non-Nacreous Pearl): Ahorow & Nneɛma a Ɛsom Bo

Calcareous concretions yɛ aboɔden abo a wɔntaa nhu a ɛte sɛ nhene nanso ɛte sɛ porcelain mmom sen sɛ ɛbɛyɛ nacre a ɛda nsow a ɛma nhene hyerɛn no.

Ɛmfa ho sɛ enni nacre no, calcareous concretions da so ara yɛ fɛ a nsusuwso soronko a worenhu wɔ nhwene mu.

Nea yɛaka yi nyinaa akyi no, aboɔden abo ho animdefo pii kyekyɛ nhene mu sɛ nhwene a wɔde yɛ nsu a ɛyɛ den na wɔfrɛ nhwene a aboɔden abo ayɛ no “ahwehwɛ a ɛnyɛ nacreous.”

Nhwɛso ahorow a ɛfa aboɔden abo a wɔde aboɔden abo ayɛ a yɛbɛka ho asɛm ne:

• Conch Nhwehwɛ a Wɔde Yɛ Ahwehwɛ

• Tridacna Nhwehwɛ a Wɔde Yɛ Nneɛma

• Melo Nhwiren

• Quahog Nhwehwɛ a Wɔde Yɛ Nneɛma

• Scallop Nhwehwɛ a Wɔde Yɛ Nneɛma

Ɛnnɛ, yɛn abenfoɔ a wɔwɔ Gem Rock Auctions bɛka calcareous concretion biara su ho asɛm, ne abakɔsɛm, ne boɔ, ne calcareous concretions su.

Mfonini a ɛwɔ atifi hɔ: Ahwehwɛ a ɛnyɛ nacreous a ɛso sen biara a wɔahu pɛn wɔ Tridacna Gigas (clam kɛse) bi a wɔato din "Allah Ahwehwɛ" mu no nsɛso | Mfonini no fi: Hannes Grobe/AWI, CC-BY-SA-3.0

Dɛn Ne Calcareous Concretions?

Wɔ aboɔden abo ho adesua mu no, aboɔden abo a wɔde yɛ aboɔden abo yɛ aboɔden abo a ɛsom bo fã bi a ɛte sɛ ahwehwɛ , a saa ara na wohu wɔ kɔla ahorow mu.

Sɛ́ aboɔden abo a ɛte sɛ ahwehwɛ no, aboɔden abo a ɛyɛ aboɔden abo yɛ June awo abo , nsoromma mu hwɛ mu anigye ma Gemini & Cancer , ne ayeforohyia afe a ɛto so 30 aboɔden abo.

Nkyerɛase a wɔde ma wɔ calcareous concretions ho wɔ asase ho adesua mu no yɛ soronko.

Geological concretions yɛ nsuo a wɔde semɛnte ayɛ a wohu wɔ abotan a ɛwɔ nsuo mu. Wɔ mfiridwuma mu no, wobetumi ayɛ aboɔden abo anaa abotan ho su.

Asase ho nkyerɛkyerɛmu foforo: aboɔden abo a wɔayɛ atwa nucleus bi ho ahyia te sɛ fossil anaa abotan. Saa concretions yi betumi ayɛ kurukuruwa, ɛyɛ tenten, ɛnyɛ pɛpɛɛpɛ, anaasɛ ɛte sɛ disk. Concretions a atwa fossils ho ahyia no yɛ nea nkurɔfo ani gye ho.

Sɛ mineral matter no yɛ calcium carbonate a, ɛyɛ calcareous concretion.

Nsonsonoe bɛn na ɛwɔ geode ne concretion ntam? Nneɛma abien no nyinaa yɛ kurukuruwa a aboɔden abo wom, nanso geodes yɛ tokuru wɔ mfinimfini na ɛnhyehyɛ ntwa nuklea bi ho nhyia.

Ahwehwɛ a Ɛnyɛ Nacreous vs Calcareous Concretion

Gyinabea ahorow wɔ sɛ ebia ɛsɛ sɛ nhene nyinaa nya nacre anaa.

Amanaman Ntam Aboɔden abo Kuw (IGS) hwehwɛ sɛ nhwene nya nacre, na wɔpaw sɛ wɔbɛfrɛ nhene a ɛnyɛ nacre “calcareous concretions.”

Nanso, Gemological Institute of America (GIA) ne World Jewellery Confederation (CIBJO) pɛ “ahwehwɛ a ɛnyɛ nacreous” sen “calcareous concretion.”

U.S. Aguadi Bagua (FTC) nhwehwɛ sɛ adetɔnfo kyerɛ nsonsonoe a ɛda abien no ntam.

Calcareous Concretions Nkyerɛkyerɛmu & Su ahorow

Wɔkyekyɛ aboɔden abo a wɔde aboɔden abo ayɛ nyinaa mu sɛ mineraloids ne aboɔden abo a nkwa wom . Nea ɛwɔ mu no mu dodow no ara yɛ calcium carbonate (aragonite , calcite , anaa n’abien nyinaa), nsu, ne conchiolin (protein a ɛwɔ abɔde mu).

Calcite/aragonite a ɛwɔ calcareous concretions mu no yɛ mmerɛw sen nea ɛwɔ nacreous pearls mu no. Calcareous concretions nni nacre efisɛ a) enni layered aragonite platelet microstructure a ɛyɛ pearls, na b) mollusks a wɔyɛ no no mu akorade nni nacre.

Bio nso, nhwehwɛ a ɛwɔ nacreous no wɔ aragonite pii sen calcite, bere a nhwehwɛ a ɛnyɛ nacreous no wɔ nea ɛne no bɔ abira. Aragonite wɔ hann kɛse sen calcite.

Calcareous concretion properties a wɔabobɔ din, a wɔatetew mu sɛnea su te bere a ɛfata no:

• Mohs denden : Conch & Tridacna - 2.5 kosi 4; Melo - 5 na ɛyɛ; Quahog - 2.5 kosi 4.5

• Kɔla : Conch - Pink, borɔdɔma, kɔkɔɔ, fitaa, bruu; Tridacna - Fitaa, fitaa a ɛyɛ fitaa, kɔkɔɔ; Melo - Nneɛma a ɛyɛ borɔdɔma, kɔkɔɔ-akutu, kɔkɔɔ a ɛyɛ mmerɛw, fitaa a ɛyɛ fitaa, tan, bruu; Quahog - Shades a ɛyɛ kɔkɔɔ, fitaa, bruu; Nkwammoaa - .

• Crystal nhyehyɛe : Biara nni hɔ (amorphous) .

• Luster : Conch & Tridacna - Ɛwɔ ahwehwɛ ase kosi nea ɛyɛ kusuu; Melo & Quahog - Ɛyɛ akisikuru kosi sɛ ɛyɛ dull

• Nneɛma a ɛda adi pefee : Conch & Tridacna - Opaque; Melo & Quahog - Ɛyɛ nea ɛyɛ hann kosi nea ɛnyɛ hann

• Nneɛma a ɛma nneɛma yɛ mmerɛw : Conch, Tridacna & Quahog - 1.530 kosi 1.685; Melo - 1.54 kosi 1.64

• Nneɛma a ɛyɛ den : Conch & Tridacna - 2.18 kosi 2.89; Melo - 2.83 kosi 2.87; Quahog - 2.61 kosi 2.85

• Cleavage : Biara nni hɔ

• Fracture : Ɛnyɛ pɛpɛɛpɛ

• Streak : Ɛyɛ fitaa

• Luminescence : Fluorescence a ɛsakrasakra

• Pleochroism : Biara nni hɔ

• Birefringence : Conch & Tridacna - Biara nni hɔ; Melo & Quahog - 0.155 na ɛwɔ hɔ

• Apete : Biara nni hɔ

• Nneɛma a ɛwɔ aniwa so : Conch, Tridacna & Melo - Chatoyant-te sɛ ogyaframa nhyehyɛe

Calcareous Concretions Ahorow Ahorow

Calcareous concretion ahorow a wohu no kɛse wɔ aboɔden abo gua so ne:

Conch

Mfonini a ɛwɔ atifi hɔ: Abɔde mu, 1.95-carat pink conch pearl a ogyaframa nhyehyɛe | Mfonini no fi: Global Gemology, CC-BY-SA-4.0

Conch nhwene fi ɔhemmaa conch gastropod, Strombus gigas . Edin a ɛnteɛ a wɔtaa frɛ ne “Nassau nhwene.” Wonim wɔn yiye wɔ pink mu nanso wɔba wɔ kɔla afoforo mu.

Esiane sɛ wɔde aragonite microcrystalline fiber bundles a ne dodow no ara yɛ pɛpɛɛpɛ wɔ criss-cross nhyehyɛe mu nti, conch pearls wɔ “ogya nhyehyɛe” — a ɛyɛ iridescent kakra, te sɛ chatoyant sheen a ɛte sɛ ogyaframa a ɛrehuruhuruw anaa moire silk.

Wɔka ahwehwɛ a wɔfrɛ no conch ka nhwehwɛ ahorow a wɔntaa nhu no ho, na nea ɛde ba titiriw ne sɛ wotwa no boro so. Akorade 10,000-20,000 biara mu biako pɛ na ɛwɔ hɔ na ɔha biara mu nkyem 10 pɛ na ɛyɛ aboɔden abo.

Tridacna na ɔkyerɛwee

Mfonini a ɛwɔ atifi hɔ no: "Nokware Ahwehwɛ" ahwehwɛ a ne kɛse yɛ carat 39,925 a efi Tridacna Gigas | Mfonini no fi: Tagdance, CC-BY-SA-4.0

Tridacna nhene fi Tridacna abusua a ɛyɛ nkyene nsu mu akraman akɛse a wɔn mu dodow no ara yɛ Tridacna gigas . Wɔsan frɛ nhwene no kima , a efi Indonesia kasa mu. Edin a ɛnteɛ a wɔtaa frɛ ne “akutu nhwene.”

Wonim saa nsu a ɛyɛ aboɔden abo yi sɛ ɛyɛ kɛse a ebetumi ayɛ kɛse, kɔla a ɛhyerɛn, ne ogyaframa a ɛyɛ hyew. Nea etwa to no te sɛ conch nhwene de no, nanso aragonite nhyehyɛe no yɛ radial, ɛnyɛ nkratafa mu.

Melo

Mfonini a ɛwɔ atifi hɔ no: Melo ahwehwɛ, daimond, ne platinum mpɛtea. (Scott Papper, G. G., CMA, RGA, AJP na ɔyɛɛ mfonini no) | Mfonini no fi: Global Gemology, CC-BY-SA-4.0

Melo nhwehwɛ ho yɛ na koraa — wɔtaa ka ho asɛm sɛ nhwene a ɛho yɛ na sen biara — na efi po mu nkraman a wɔfrɛ wɔn gastropod a wɔfrɛ wɔn Melo Melo , AKA “bailer shell” anaa “Indian volute.”

Te sɛ Conch & Tridacna no, Melo nhwene wɔ ogyaframa nhyehyɛe. Wohu wɔn wɔ shades a ɛyɛ borɔdɔma anaa bruu mu. “Papaya” akutu a ɛyɛ hyew ne nea wɔntaa nhu na wɔhwehwɛ sen biara.

Quahog

Mfonini a ɛwɔ atifi hɔ no: Abɔde mu quahog nhene a wɔaboaboa ano | Mfonini no fi: Global Gemology, CC-BY-SA-4.0

Quahog (wɔbɔ no KO-hog) nhwene fi nkyene nsu mu akraman a wɔn ho yɛ abien a wɔfrɛ no Mercenaria mercenaria , a kan no na wɔfrɛ no Venus Mercenaria . Wobetumi ayɛ fitaa kosi bruu, nanso wonim wɔn yiye sɛ wɔn kɔla yɛ kɔkɔɔ.

Abɔde mu quahog nhene ka nea wɔntaa nhu no ho; otwafo dodow no ara hu biako wɔ Quahog clams 5,000 biara a wobue mu no mu, na pii nyɛ nea ɛte sɛ aboɔden abo. Nea ɛka ho no, mpɛn pii no, otwa a wotwa no kunkum ɔkraman no anaasɛ ɛsɛe nhwene no.

Quahog nhwene dodow no ara yɛ oval. Kɔla ahorow a wɔde kyekyɛ nneɛma mu abu so. Quahog nhwene binom wɔ kurukuruwa bi a ne kɔla yɛ hare a wɔfrɛ no “ani so nkɛntɛnso” a ɛma aboɔden abo no yɛ te sɛ nea ɛyɛ hann.

Scallop a ɛyɛ mmerɛw

Mfonini a ɛwɔ atifi hɔ no: Scallop pearl | Mfonini no fi David LeBlanc, CC-BY-SA-4.0

Scallop nhwene — a wɔfrɛ no “Gyata Paw” anaa “Mano de Leon” nhwene — fi nkyene nsu mu nhwene anan mu:

1. Atlantic Gyata no Akyi (Nodipecten nodosus) .

2. Pacific Gyata Paw (Nodipecten subnodosus) .

3. Atlantic Po mu akraman (Placopecten magellanicus) .

4. Atlantic Bay mu akraman (Argopecten irradians) .

Saa calcareous concretions yi wɔ oval, button, na mpɛn pii no baroque. Wɔn kɔla nso gu ahorow, efi fitaa, tuntum, salmon, anaa bruu a ɛyɛ pink, kɔkɔɔ, anaa burgundy a wɔntaa nhu so.

Scallop nhwene yɛ soronko wɔ sɛnea ɛwɔ nsensanee anaa mosaic, calcite nkwammoaa a ɛyɛ nhama a ɛwɔ ɛwo a wɔde yɛ nneɛma mu, na ɛtɔ mmere bi a ɛkame ayɛ sɛ ɛyɛ dade a ɛhyerɛn no mu.

Wɔn ho yɛ na koraa, na ɛyɛ ahwehwɛ biako wɔ scallops 10,000 biara mu. Bɛyɛ ɔha biara mu nkyem 20 pɛ na ɛyɛ aboɔden abo.

Scallop nhwene agye din wɔ mfe 30 a atwam no mu.

Mfonini a ɛwɔ atifi hɔ no: Mfonini a ɛkyerɛ ahwehwɛ a ɛyɛ pink a ɛwɔ conch shell so a wɔato din Pearls and Pearling Life , a Edwin W. Streeter yɛe wɔ 1886 mu | Mfonini no fi: Nsu Pa ne Po mu Mfoninikorabea, Ɔmanfo de

Calcareous Concretions Nkyerɛase & Abakɔsɛm

Nkyerɛase ne ayaresa su a ɛwɔ calcareous concretions mu no te sɛ nacreous pearls — kenkan yɛn Pearl Info Guide na woanya pii.

“Concretion” fi Latin kasa mu concretio , a ɛkyerɛ “ade a ɛyɛ den a ɛka bom anaasɛ ɛyɛ den.”

“Calcareous” fi Latin kasa mu calcārius , a ɛkyerɛ “a ɛfa lime ho anaasɛ ɛfa ho” — lime yɛ asɛmfua dedaw a wɔde gyina hɔ ma ade a calcium wom.

Calcareous concretion ahorow biara wɔ n’ankasa abakɔsɛm fã soronko:

• Conch Pearls : Amerikafo Ankasa na agye din mfehaha pii, ɛbɛyɛ sɛ Christopher Columbus na ɔde baa Europa wɔ 1500 mfe no mu; Wɔkyekyɛɛ mu wɔ afe 1758 mu

• Tridacna Pearls : Nhwehwɛ a edi kan a wɔagye din a wɔatutu fam ahu a wɔkyerɛw ho asɛm wɔ 1723 mu

• Melo Pearls : Wɔ abakɔsɛm mu no, na ɛyɛ Apuei Fam ahemfo ho sɛnkyerɛnne, wɔsom sɛ kronkron, na wosusuw sɛ efii ase bere a wɔtow fii ɔtweaseɛ a otu mu no

• Quahog Pearls : Bere bi na wɔde di dwuma sɛ sika wɔ New England Amerikafo Ankasa mu

Scallop nhwene a agye din no fii ase wɔ 1990 mfe no awiei mu hɔ, bere a abɔde mu ahwehwɛ a wɔhwehwɛ no gyee nhwene a wɔde amammerɛ ayɛ a agye din mfe 80 a atwam no. Nova Scotia agude ho nimdefo Craig Fancy na ɔyɛɛ akwampaefo de yɛɛ scallop ahwehwɛ agude.

Mfonini a ɛwɔ atifi hɔ no: Marcus and Co. Brooch a efi ca. 1900 a wɔde plique-à-jour enamel, conch pearl, diamond, platinum ne sika kɔkɔɔ karat dunan | Mfonini no fi: Metropolitan Museum of Art, Ɔmanfo de

Calcareous Concretions Aboɔden abo Nneɛma a Ɛwɔ Hɔ

Calcareous concretions som bo, nanso ne bo pɔtee gyina nneɛma a ɛte sɛ pearl grading so .

Ahosuo

Sɛ yɛka ne nyinaa bom a, calcareous concretions a kɔla ahorow a ɛyɛ saturated na ɛyɛ hyew kɛse no kura mfaso kɛse.

Nanso calcareous concretion type biara wɔ kɔla ahorow a ɛsom bo kɛse:

• Conch : Rarest & nea ɛsom bo sen biara ne pink anaa fitaa; Ɛsom bo kakra wɔ borɔdɔma anaa kɔkɔɔ mu; Least valuable & dodow no ara yɛ brown

• Tridacna : Eye sen biara ne kɔla kyekyɛ mpo

• Melo : Rarest & ɛsom bo sen biara wɔ papaya orange a ɛyɛ hyew mu

• Quahog : Ɛsom bo sen biara wɔ kɔla kɔkɔɔ mu; Brown shades bo yɛ den kakra sen fitaa; Ɛtɔ mmere bi a, “ani so nkɛntɛnso” som bo

• Scallop : Shades of purple, pink, anaa maroon yɛ nea ɛntaa nsi & ɛsom bo kɛse; White anaa brown shades abu so kɛse

Kɔla nkyekyɛmu mpo ho hia ma Tridacna, Melo, ne Quahog nhwehwɛ boɔ gye sɛ ɛwɔ kɔla zoning/bands a ɛyɛ pɛpɛɛpɛ.

Ogya Nhyehyɛe / Nhwɛso

Calcareous concretions dodow no ara wɔ ogyaframa nhyehyɛe a yɛadi kan aka ho asɛm no. Ebia wobehu nkɛntɛnso no wɔ kɛseyɛ ase nkutoo, nanso ogyaframa nhyehyɛe a ɛyɛ nwonwa bɛma bo a ɛsom no akɔ soro kɛse (ɛtɔ mmere bi a ɛbɛbɔ mmɔho abien).

Nea ɛne no bɔ abira no, ogyaframa nhyehyɛe a wontumi nhu pefee no bɛtew bo so kɛse.

Ade foforo a ɛma mfaso nya nkɔso ne mosaic nsusuwso a ɛwɔ scallop nhwene mu no.

Luster a ɛyɛ fɛ

Calcareous concretions ye sen biara a ɛwɔ sub-vitreous luster a ɛte sɛ porcelain. Dull anaa low luster ma bo a ɛsom no so tew. Scallop nhwene betumi ayɛ nea ɛsom bo kɛse a luster bɛn dade.

Nsõ a Ɛwɔ Anim

Nhwiren a ɛsom bo sen biara a wɔde abo ayɛ no nni nkekae kakraa bi anaasɛ enni bi wɔ soro anaasɛ ɛyɛ mmerɛw, nanso nhwene nyinaa wɔ sintɔ ahorow bi.

Mfomso ahorow a ɛtaa ba wɔ nhwehwɛ a ɛnyɛ nacreous ho ne:

• Dimples a ɛwɔ hɔ

• Bumps a ɛyɛ mmerɛw

• Pits

• Mpaapaemu

Mfomso abu so wɔ ahorow bi mu — Melo nhwehwɛ pii wɔ nkekae wɔ soro nanso sintɔ ntaa nhu wɔ Quahog nhwehwɛ so.

Sintɔ ahorow a ɛda nsow kɛse no brɛ bo ase kɛse.

Mfonini a ɛwɔ atifi hɔ: Melo ahwehwɛ, daimond ne platinum kɔnmuade | Mfonini no fi: Global Gemology, CC-BY-SA-4.0

Nneɛma a Wɔde Yɛ Nneɛma & Symmetry

Calcareous concretions ntaa nyɛ kurukuruwa te sɛ nacreous pearls, na ɛma kurukuruwa a ɛnyɛ nacreous pearls yɛ nea ɛntaa nsi na ne bo yɛ den sen biara.

Mpɛn pii no, nea eye sen biara no wɔ oval nsusuwii a ɛne ne ho hyia, na ɛno akyi no, nusu ne nkesua nsusuwii a ɛne ne ho hyia. Botae so tew ma nsusuwii ahorow a ɛnyɛ pɛpɛɛpɛ anaasɛ ɛyɛ ovoid.

Calcareous concretions nsusuwii afoforo bi ne button, drop, baroque, ne irregular.

Kɛseɛ

Ɛsono nhwene ahorow a ɛnyɛ nacreous no kɛse, nanso akɛse (titiriw nea ɛkorɔn) betumi ayɛ nea ɛsom bo kɛse.

Nneɛma akɛse a ɛwɔ calcareous concretion ahorow biara mu ne:

• Conch : Mpɛn pii no, ɛwɔ fam 3 mm anaa 0.2-0.3 cts, ebetumi ayɛ 22 mm anaa 45 cts

• Tridacna : Ɛtaa yɛ mm 3 kosi 140; Wonim no sɛ kɛse sen biara, kɛse nsakra bo kɛse gye sɛ ɛyɛ kɛse

• Melo : Mpɛn pii no ɛyɛ mm 7-11, ɛtɔ mmere bi a ɛyɛ mm 30; Ebetumi ayɛ nea ne tenten boro mm 200

• Quahog : Mpɛn pii no ɛyɛ 3-8 mm anaa nea ennu 10 cts; Ne tenten bɛyɛ mm 44

• Scallop : Mpɛn pii no ɛyɛ 2-11 mm, ɛkɔ 40 cts

Nhwehwɛ abiɛsa a ɛsõ sen biara a wɔagye atom, abɔde mu, a ɛnyɛ nacreous no nyinaa yɛ Tridacna.

• 2023 Hwehwɛ — 105.38 lbs

• “Giga Pearl” — ne kɛse yɛ 15.5, ne kɛse yɛ 60.95 lbs

• “Lao Tzu Ahwehwɛ” (anaasɛ “Allah Ahwehwɛ”) — ne kɛse yɛ 9.45, 14.1 lbs

Abɔde vs Amammerɛ

Nhwehwɛ dodow no ara a ɛnyɛ nacreous no ntumi nyɛ amammerɛ. Ade biako a ɛka ho ne nea Florida nyansahufo yɛɛ bɛyɛ afe 2007: conch nhwene a wɔayɛ no amammerɛ, a ɛbaa gua so wɔ afe 2010 mu.

Mfonini a ɛwɔ atifi hɔ no: Tridacna gigas (Giant clam) a ɛwɔ Aquarium Finisterrae mu wɔ Spain | Mfonini no fi: Fernando Losada Rodríguez, CC-BY-SA-4.0

Calcareous Concretions Nneɛma a Wɔyɛ & Nneɛma a Efi Mu

Ɔkwan bɛn so na wɔhyehyɛ concretions? Calcareous concretion formation te sɛ nacreous pearl formation .

Ade bi a ɛhyɛ abufuw hyɛn mollusk no mu, na abɔde no yi ahwehwɛ a ɛyɛ nhama ne conchiolin a ɛyɛ ntoatoaso twa ade a ɛhyɛ abufuw no ho hyia. Abɔde a wɔwɔ calcareous concretions akyi no wɔ nneɛma a ɛsono sɛnea wɔde kyekyere ade a ɛhyɛ abufuw no ara kwa.

Mmeae a Wɔyɛ

Nneɛma atitiriw (anaasɛ ɛno nkutoo) a wonya fi calcareous concretion ahorow biara mu ne:

• Conch : Bahama Po, Caribbean Po & Florida Asubɔnten

• Tridacna : Abon a atwa Indonesia ne Philippines ho ahyia

• Melo : Asia Kesee Fam Apuei nkutoo (Myanmar, Malaysia, Thailand, South China Po, ne Philippines) .

• Quahog : Amerika Atifi fam Apuei & Amerika Mfinimfini

• Scallop : Ɛte Baja California mpoano

Mfonini a ɛwɔ atifi hɔ no: Scallop pearl ring | Mfonini no fi: Nicole Bratt, Flickr , CC-BY-SA-2.0

Calcareous Concretions Bo & Ne Bo

Sɛ wogyina sɛnea nneɛma te so a, ɛsono ne bo kɛse wɔ ɔkwan biara so.

Calcareous concretion bo a wɔbɔ no nyinaa yɛ nea ɛsɛ sɛ yɛhwɛ kwan sɛ:

• Conch : $250 kosi $9,000 wɔ carat biara mu

• Tridacna : $50 kosi $250 wɔ carat biara mu

• Melo : $250 kosi $3,000 wɔ carat biara mu

• Quahog : $250 kosi $9,000 biara

• Scallop : $100 kosi $2,500 wɔ carat biara mu

Nhwɛso ahorow a ɛsõ kɛse anaasɛ wɔntaa nhu koraa betumi adu bo a ɛboro dɔla 50,000.

Calcareous Concretions Hwɛ ne Nsiesiei

Bere a calcareous concretions betumi akyɛ kakra asen nacreous pearls no, aboɔden abo a wɔhwɛ so da so ara ho hia. Afotu titiriw no ne:

1. Store fi owia hann tẽẽ — exposure betumi ayera kɔla — na soronko fi aboɔden abo afoforo.

2. Kɔ onimdefo bi nkyɛn ansa na woayɛ no fɛfɛɛfɛ.

3. Paw nhyehyɛe ahorow a ɛbɔ wo ho ban wɔ agude so.

4. Fa agude sie ma anwummere anaa bere ne bere mu a wobɛhyɛ.

5. Hyɛ agude wɔ ntade so (ɛnyɛ honam ani).

6. Twe wo ho fi ɔhyew ho.

Fa ntama a wɔde nsu ne samina a ɛnyɛ den afra mu a wode bɛpopa aboɔden abo yi nkutoo. Popa aboɔden abo no ase bere biara a wobɛhyɛ no akyi.

Mfonini a ɛwɔ atifi hɔ no: Quahog ahwehwɛ kɛse bi a ɛyɛ kɔkɔɔ, daimond, ne platinum nkaa | Mfonini no fi: Global Gemology, CC-BY-SA-4.0

Nya Nneɛma Soronko a Ɛwɔ Calcareous Concretions mu no mu anigye!

Saa aboɔden abo yi din nyɛ wɔn atɛntrenee — calcareous concretions yɛ aboɔden abo a ɛyɛ fɛ a ɛwɔ nsusuwii soronko, mfiase, ne sɛnea ɛte. Fa nhwehwɛ a ɛnyɛ nacreous yi a ɛho yɛ na a ɛtwetwe adwene no ka ho na wowɔ aboɔden abo a ɛnyɛ nea wɔtaa yɛ a ɛfata sɛ wohwehwɛ!

Hwehwɛ yɛn nhwene ahorow a ɛyɛ nacreous ne nea ɛnyɛ nacreous no mu nnɛ!