Dɛn Ne Opal Rough a Ɛyɛ Paara a Wobɛsua Opal Twitwa Ne Polishing?

Wɔakyerɛw saa asɛm yi sɛnea ɛbɛyɛ a ɛbɛboa wɔn a wotwitwa nneɛma a wɔn ho akokwaw nyinaa ma wɔapaw opal a ɛyɛ den a eye sen biara a wɔde betwitwa na wɔde ayɛ polish.

Opal a wobɛtwa afi rough no mu ayɛ no ɔbo a wɔawie no yɛ nea mfaso wɔ so kɛse, nanso sɛ́ obi a ɔrefi ase no, ebetumi ayɛ te sɛ nea ɛyɛ hu kakra sɛ wubehu opal rough ko a wobɛpaw.

Nea edi kan no wubehia mfiri a wɔde twa opal na wɔde yɛ polishing. Mfitiaseɛ saw blade ne polishing grit ntwahonan a ɛsono ne kɛseɛ fi dadeɛ so kɔsi rɔba a wɔde diamonds a ɛwɔ grade ahodoɔ mu ahyɛ mu ma ne polishing wheel.

Momma yɛnhwɛ akwan horow no bi yiye.

Opal Ahorow a Ɛyɛ Den

Mixed parcels of rough opal bɛyɛ $20 kosi $50 ye sɛ wubefi ase afi Koroit, Ethiopia anaa Coober Pedy rough. Ironstone a nsusuwso pa fi Koroit ne Yowah opal rough yɛ papa sɛ wubesua polishing, sɛ wo polish to hard wo wont rub away opal kɔla. Yowah nnuaba yɛ abotan na ɛwɔ kɔla a emu yɛ den, nanso wɔka sɛ apem biara mu biako pɛ na ɛwɔ kɔla biara.

Ethiopia rough opals wɔ kɔla a ɛyɛ den na ɛsom bo yiye efisɛ ne bo nyɛ den sɛ wobɛtɔ. Enti fi ase de plain patterned wɔ wo kan adetɔ na bɔ wo ho amanneɛ fa hydrophane su ahorow a opal yi titiriw bere a polishing wɔ nsu mu.

Boulder opal wɔ kɔla ntini a ɛyɛ tratraa pii na ebetumi ayɛ den sɛ wɔde ntwahonan foforo bɛpopa, eyi ma wɔn a wotwitwa nneɛma no petepete kɔla pii a wɔbɔ mmɔden sɛ wobenya awie pa. Wɔ mmere bi mu no, ɛsɛ sɛ wɔpaapae Boulder opal rough nso mu denam nea wɔde bɛhyɛ afiri a wɔde twa saw mu no so.

Black opal rough fi kanea ridge betumi ayɛ anifere kɛse. Black opal rough wɔ ahorow abien, seam opal anaa nobby opal. Seam opal yɛ nea wɔayɛ no layers na eye sɛ wubesua so bere a kɔla bar no te ase potch so. Dodow no ara saa potch yi kɔla yɛ grey na ɛwɔ nipadua tone N4 kosi N5 na opal hia nipadua tone N4 ne nea ɛboro saa na wɔabu no sɛ black opal. Wɔfrɛ opal tuntum dodow no ara a wotu wɔ Cochran nobby opal. Saa opal yi bo betumi ayɛ nea ne bo yɛ den na wɔayɛ no te sɛ ɔbotan a ɛwɔ kɔla bar na ebetumi ayɛ den sɛ wobɛkenkan sɛnea wotwitwa na wɔyɛ no fɛfɛɛfɛ. Cutters pii di mfomso sɛ wɔde rubbing down the wrong side enti sɛ woretɔ parcel bere nyinaa fi ase de asinasin a ne bo yɛ mmerɛw sen biara hwɛ sɛnea kɔla no anim. Mpo bɔ mmɔden sɛ wobɛtwitwa wɔ anim de ada ogya kɔla a eye sen biara adi, kɔla a emu da hɔ ho hia sen kɛse a opal tuntum pa ka ho. Opal cutters pii bɛka sɛ wɔbubu even anaasɛ loose wɔ half rough opal a wɔtɔ nanso wɔyɛ yie wɔ 50% a aka no ho.

Enti sɛ woretɔ opals a ɛkyerɛ kɔla ahorow a, ebia wubesusuw sɛ dɛn nti na nea otu fam no nsɛee no? Enti ɛsɛ sɛ wobu veined rough sɛ kyakyatow adetɔ, nanso nkonimdi anaasɛ wohwere no ɛda so ara yɛ anigyede a ɛyɛ nwonwa sɛ wubetwitwa na woahohoro w’ankasa opals na wode ahyɛ agude mu ama abusua ne nnamfo.

Parcel a ɛwɔ aseɛ ha no da kɔla bruu kɔsi ahabammono pii adi wɔ ahwehwɛ mu. Opal miners nyinaa hwehwɛ nobbies ma kɔla a wɔahyehyɛ wɔ potch so. Potch is basically opal that is one colored ie just white, just black etc. Ɛyɛ opal a ɛtaa ba nea yɛpɛ sɛ yehu ne opal a ɛsom bo a ɛda kɔla pii adi. Ebinom a saa chunks yi bɛda opal bars adi nanso ɛyɛ den sɛ wobɛhwɛ bere a ne wɔ saa rough tebea yi mu. Wɔtwa asinasin akɛse abien wɔ ntwahonan a wɔde twa ade a ɛyɛ den so sɛnea ɛbɛyɛ a kɔla biara bɛda adi.

Opal Rough Ma Nnipa Foforo a Wɔtwa

Opal cutters foforo ye sɛ wode boulder ironstone anaa Koroit opal rough befi ase. Ɔkwan foforo so no Ethiopian Rough opals da so ara yɛ bo a ɛfata mprempren na sɛnea crystal kɔla nnua no yɛ den no, eye ma wɔn a wotwa foforo.

Sɛ wotwa opal ɔhaha kakraa bi na wowɔ polish pa a enni nsensanee a, eye sen sɛ wobɛtɔ boulder opal rough a kɔla nnua a ɛyɛ tratraa wom na woahu sɛnea wubetumi apetepete fam na woakora kɔla pii so sɛnea wubetumi.

Ebia opal tuntum bi wɔ akorade anaa nnompe na eye sɛ wɔrentwitwa anaasɛ wɔanhohoro eyinom na mmom wobegyaw no abɔde mu. Coober Pedy wɔ fossils ne shells pii na eyinom agye din sɛ inlay rough material anaasɛ wɔde yɛ doublets ne triplets.

Rough Opal Ma Wɔn a Wɔn Ho Nkokwaw wɔ Cutters

Afei wɔn a wɔn ho akokwaw a wotwitwa nneɛma betumi atɔ black opal rough sɛ nneɛma a wɔde bɛkɔ. Sɛnea ɛte wɔ rough nyinaa ho no eye sɛ wobɛtwa asinasin a ɛhyɛ bɔ sen biara no rough last not first! Cutters pii ani gye ho sɛ wobehu nea rough opal no bɛda adi nanso nea eye sen biara bere nyinaa sɛ wobɛyɛ asinasin nketewa sɛnea ɛbɛyɛ a wubenya atenka pa ama parcel no. Eyi nyɛ mmerɛw sɛnea ɛte no efisɛ opal adwumayɛbea dodow no ara de ultra sonic drills a ne bo yɛ den di dwuma.

Mprempren diamond tip drills yɛ relativity inexpensive nanso ɛsɛ sɛ cutter hwɛ yiye bere a ɔrepia drills afa mu akɔ ɔfã foforo (titiriw bere a ɔrebɔ mmɔden sɛ wɔbɛyɛ beads) efisɛ ɛsɛ sɛ wɔyɛ tokuru fi n’awiei abien no nyinaa anaasɛ opal can chip.

Rough Opals de ahoɔfɛ a ɛyɛ nwonwa sie, a ne fã bi da adi denam ɔbo no a wɔde bɛhyɛ nsu mu (sɛnea wɔn a wɔtɔn no yɛ no; wo rough opal (s) no bedu hɔ a ayow). Saw blade titiriw ne polish pa ho hia na ama wɔada opal a ɛyɛ den no fɛ adi, na saa ara na boasetɔ ne bere nso ho hia. Sɛ wɔyɛ no yiye a, opal ahorow bi da ogya kɔla a ɛhyerɛn adi. Wobetumi apete saa kɔla ahorow a ɛyɛ nwonwa yi sɛ wɔayɛ no fɛfɛɛfɛ dodo a.

Wobetumi atɔ mfiri a wɔde twa lapidary a wɔde opal twa nanso sɛ wubetumi ayɛ w’ankasa de a, ebia ɛho renhia.

Wobetumi anya opal a ɛyɛ den afi wɔn a wotu opal ne wɔn a wɔtɔn no kɛse/wɔn a wɔtɔn no hɔ tẽẽ. Wobetumi anya afi Australia opal mfuw atitiriw nyinaa mu:

Na ɛyɛ den sɛ wobenya Ethiopian rough opals efisɛ aban no bara Ethiopian rough a wɔde kɔ amannɔne bɛyɛ afe 2013 mfinimfini na wɔma kwan ma wɔde abo a wɔatwa nkutoo kɔ amannɔne. Nea eye ne sɛ mprempren wɔasesa saa nhyehyɛe yi, ɛwom sɛ wɔde tow kɛse a wɔbɔ wɔ nneɛma a wɔde kɔ amannɔne ho adi dwuma de.

Rough Opal a Wobɛtɔ Wɔ Intanɛt So

Mahu sɛ cutters foforo pii kɔ tẽẽ na wɔtɔ parcel rough black opal na wofi ase twa. Awerɛhosɛm ne sɛ wɔde kɔla pii petepete so bɔ mmɔden sɛ wobenya polish pa. Eyi fi nneɛma abiɛsa nti. Nea edi kan no, osuahu a wonni. Nea ɛto so abien, wonnim sɛnea wɔyɛ polish ne abiɛsa, ntwahonan foforo. Cutters dodow no ara wɔ ntwahonan foforo na wonnim sɛnea saa diamond tip ntwahonan yi yɛ nnam na wogyaw nsensanee akɛse wɔ opal no mu. Enti bere a wɔyɛ polish no, wɔde kɔla bar no petepete.

Ɛyɛ papa sɛ wubefi ase de rough opal a efi Koroit opal rough, Yowah opal rough, anaa Ethiopian rough na woapaw mfinimfini kosi fam grade opal rough. Eyi yɛ mmerɛw sɛ wobɛpopa efisɛ enhia sɛ wudi kɔla ahorow akyi. Ɛyɛ basabasa kakra na wobɛnya brown stains nanso wobɛtumi ahunu berɛ a polish no ye wɔ opals no so.

Nea edi hɔ ne sɛ wobɛsɔ Coober Pedy white opal rough ahwɛ efisɛ wɔwɔ kɔla a ɛyɛ den a wɔde petepete fam. Afei kɔ na sɔ boulder opal rough anaa black opal rough a kɔla a ɛyɛ tratraa wom hwɛ.

Kae sɛ bere nyinaa wobɛpetepete nea enye koraa a ɛte sɛ rough wɔ parcel mu, mfi ase da wɔ rough asinasin a ɛhyɛ bɔ a eye sen biara no so. Paw opal a ɛyɛ rough a ɛyɛ fɛ sen biara na gyaw no to nkyɛn afei fa petepete na polish grade a ɛwɔ fam no. Eyi bɛboa wo ma woanya te nka wɔ krataa no ho. Ɛtɔ mmere bi a, wɔn a wotwitwa nneɛma no ma baabi a opal no atifi ne ase wɔ no frafra. Enti eye sɛ wobɛsɔ low grade ahwɛ ansa na woatwitwa opals pa no.

Kɔtɔ volume parcels na nya osuahu. Sɛ diamond ntwahonan yɛ nnam dodo a, ɛnde bɔ mmɔden sɛ wode ɔbo a ɛyɛ den biara te sɛ Agate aboɔden abo bɛpetepete ntwahonan no ase na ama ayɛ mmerɛw na hwɛ hu sɛ wode nsu pii bɛpetepete fam pɛpɛɛpɛ.

Semi tuntum anaa grey rough ye sɛ wubefi ase ama Lightning Ridge nneɛma. Ɛtɔ da bi a, rough no mfinimfini yɛ tuntum, enti sɛ woretwitwa eyinom a kɔ opal tuntum ketewaa bi mmom sen opal akɛse a egyina grey so.

Ɛnnɛ ɔkwan pa a wobɛfa so atɔ opal ne sɛ wobɛtɔ wɔ intanɛt so anaasɛ wobɛkɔ opal mfuw mu tẽẽ wɔ Australia na woatutu w’ankasa opal. Bere bi a atwam no opal miners ne opal wholesalers bɛsra shows te sɛ Tucson wɔ USA nanso ɛnnɛ saa shows yi bo yɛ den yiye sɛ wobɛkɔ sɛ adetɔnfo. Booth ne akwantu ho ka boro $20,000 koraa mprempren, na ɛno yɛ onipa biako pɛ. Mprempren opal a wotu ne opal tɔnfo pɛ sɛ wɔde opal bo a wɔtɔn no kɛse fi intanɛt so ma wo. Enti hwɛ hu sɛ wobɛtɔ ade afi opal tɔnfo bi a ɔwɔ nsɛm pa na ogyina wɔn ade no akyi hɔ. Wɔn a wotu opal ne wɔn a wɔtɔn opal kɛse no mu dodow no ara yɛ anokwafo, wɔyɛ adwumaden, na wɔn ani gye opal ho ankasa.

Bisa nsɛm pii sɛnea wo ho tɔ wo wɔ baabi a opal no fi bae ho na bisa sɛ ebia mfonini no yɛ pɛpɛɛpɛ te sɛ mfonini no anaa.

AKWANKYERƐ OPAL ROUGH

Rough Opal