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Aboɔden abo a Wɔde Kɔla Ayɛ Grading: Nea Ɛsɛ sɛ Wuhu
Aboɔden abo bo a wɔbɛkyerɛ no yɛ nneɛma a ɛho hia sen biara a ɛsɛ sɛ wɔn a wɔyɛ ne wɔn a wɔde di dwuma nyinaa yɛ ansa na wɔatɔ aboɔden abo no mu biako. Bere a nsenia a emu yɛ den wɔ hɔ a wɔde bɛkyerɛ Diamonds wɔ nea Gemological Institute of America (GIA) na ɛyɛe no, amanaman ntam gyinapɛn biara nni hɔ a wɔde kyerɛ sɛnea aboɔden abo a ɛwɔ kɔla ahorow no mu da hɔ.
Nnipa pii taa adwene tu fra na wɔde “C” anan- pefee, twa, kɔla ne carat mu duru- a ɛwɔ Diamond grading mu no di dwuma ɔkwammɔne so de kyerɛ bo a Coloured Gems som. Ɛwom sɛ pefeeyɛ ho hia wɔ aboɔden abo a ɛwɔ kɔla ahorow a wɔde hyɛ mu te sɛ nea ɛho hia wɔ Diamonds ho de, nanso gyinapɛn ahorow no yɛ soronko koraa. Mpɛn pii no, adetɔfo betumi ayera abo fɛfɛ a ɛyɛ fɛ sɛ wɔde Diamond gyinapɛn ahorow a wɔde hyɛ mu no di dwuma wɔ aboɔden abo a ɛwɔ kɔla ahorow ho a. Ɛtɔ da bi a, aboɔden abotɔnfoɔ de nsɛmfua te sɛ VVS ne VS di dwuma de hyɛ aboɔ a ɛwɔ kɔla mu, a ɛtaa yɛ adwenem naayɛ ma adetɔfoɔ no ɛfiri sɛ saa nsɛmfua yi ne Diamond a wɔde hyɛ mu no wɔ abusuabɔ ma enti ɛnyɛ ɔkwan pa ankasa a wɔfa so de aboɔden aboɔ a ɛwɔ kɔla hyɛ mu. Gem fekuw pii kamfo kyerɛ sɛ wɔmfa dwumadi mu pefeeyɛ abasobɔde ahorow nni dwuma, te sɛ “loupe clean”, “ɛkame ayɛ sɛ loupe clean”, “eye clean” anaa “very slightly included”, grade bɛn na ɛbɛma aboɔden abo abasobɔde wɔ sɛ ebia wobetumi de aniwa ahu nneɛma a wɔde aka ho no anaasɛ wɔ loupe ase wɔ 10x kɛseyɛ mu.
Sɛ wɔreyɛ aboɔden abo a ɛwɔ kɔla ahorow a, nokwarem no, ɛyɛ kɔla no na ɛho hia sen biara, bere a sɛ ɛmma ɔbo no fɛ nsɛe nneɛma a wɔde ka ho a, wɔma ho kwan. Esiane sɛ ade titiriw a wɔde wɔn adwene si so titiriw wɔ Colored Gemstones ne wɔn kɔla nti, amanaman ntam gyinapɛn biara nni hɔ a wɔde bɛma pefeeyɛ wɔ Colored Gemstones mu a ɛfata te sɛ GIA International Diamond Grading System. Lab akɛse te sɛ GIA ne GRS ntaa mfa clarity grade nka wɔn amanneɛbɔ ho esiane eyi nti.
Nanso, nnansa yi ara GIA de clarity type nhyehyɛe bi bae maa aboɔden abo a ɛwɔ kɔla ahorow a ɛboa adetɔfo ma wɔte ase sɛ pefeeyɛ gyinapɛn soronko ma aboɔden abo ahorow no. Aboɔden abo ahodoɔ mmiɛnsa na ɛwɔ hɔ a GIA nhyehyɛeɛ no kyekyɛ mu.
Gem Ahorow a Wɔde Ma Grading
Ɔkwan a wɔfa so yɛ 1:
Ɛkame ayɛ sɛ wɔtaa hu Type 1 Gemstones a wɔmfa nka ho koraa wɔ gua so. Nneɛma a wɔde aka Type 1 Colored Gemstones a ɛyɛ papa ho no sua araa ma wobetumi ahu wɔ 10x kɛseyɛ ase nkutoo. Wɔkamfo kyerɛ sɛ sɛ ɔretɔ Type 1 Colored Gemstone a, ɛsɛ sɛ nea ɔtɔ no hwɛ kwan sɛ ɛkame ayɛ sɛ aboɔden abo no ho bɛtew.
Type 1 Kɔla Aboɔden abo no bi ne;
Beryl a ɔyɛ kɔkɔɔ
Chrysoberyl a wɔde yɛ aduru
Danburite a wɔde yɛ adwuma
Ahemman no Topaz
Topaz a ɛyɛ bruu
Zircon a ɛyɛ bruu
Zircon fitaa a wɔfrɛ no Zircon
Ɔkwan a ɛto so 2:
Wɔtaa hu Type 2 Gemstones a wɔde ka ho nanso, nhwɛsode a ɛkorɔn wɔ saa ɔfã yi mu no ho tew ma aniwa a ɛda hɔ na ɛkame ayɛ sɛ loupe ho tew te sɛ Type 2 Gemstone.
Aboɔden abo a ɛyɛ Type 2 no bi ne;
Corundum (Ruby ne Safir) .
Diopside a ɛwɔ hɔ
Iolite a wɔde yɛ nneɛma
Quartz ahorow dodow no ara (a Amethyst ne Ametrine ka ho) .
Tourmaline (ɛnyɛ ahabammono, rubellite ne nsuonwini ka ho) .
Zircon (a kɔla kɔkɔɔ, kɔkɔɔ ne borɔdɔma ka ho).
Ɔkwan a ɛto so 3:
Mpɛn pii no, wohu aboɔden abo a ɛyɛ Type 3 bere nyinaa a wɔde nneɛma a wotumi hu ka ho. Type 3 Colored Gemstones a ɛkorɔn mpo benya nneɛma a wɔde ka ho a wobetumi de aniwa ahu.
Type 3 Colored Gemstone no bi ne;
Benitoite na ɔkyerɛwee
Beryl kɔkɔɔ
Prehnite a ɔyɛ ɔkyerɛwfo
Sphalerite a wɔde yɛ aduru
Sphene
Nsuo mu nsuo ne Rubellite Tourmaline.
Gemstone are nso wobetumi de graded wɔ wɔn Type mu, sɛnea nhyehyɛe a ɛwɔ ase ha no kyerɛ no:
VVS
Very, very slightly Included Minute- inclusions a ɛyɛ den sɛ wobɛhunu denam 10x loupe a wode bedi dwuma, nanso ɛda so ara ntumi nhunu wɔ aniwa so. Eyi ne aboɔden abo a ɛwɔ kɔla ahorow a emu da hɔ sen biara.
VS
Very Slightly Included Minor- inclusions a ɛyɛ mmerɛw sɛ wobɛhu denam 10x loupe a wode bedi dwuma so, nanso ɛda so ara ntumi nhu wɔ aniwa so.
SI1
Slightly Included 1- inclusions a ɛnyɛ den sɛ wode 10x loupe bedi dwuma na wotumi de aniwa nso hu.
SI2
Slightly Included 2- inclusions yɛ mmerɛw sɛ wobehu wɔ 10x loupe na wotumi hu yiye wɔ aniwa a ɛda hɔ.
I1
Nneɛma a wɔde ka ho 1- a wɔde ka ho no da adi yiye na ɛwɔ nkɛntɛnso bɔne a ɛkɔ fam wɔ ɔbo a ɛsom bo a ɛwɔ kɔla no nyinaa hwɛbea anaa ne fɛ so.
I2
Included 2- inclusions da adi yiye na ɛwɔ nkɛntɛnso bɔne a emu yɛ den wɔ sɛnea ɔbo a ɛsom bo a ɛwɔ kɔla no nyinaa te anaasɛ ɛtra hɔ kyɛ so.
I3
Included 3- inclusions da adi yiye na ɛwɔ nkɛntɛnso bɔne a emu yɛ den wɔ sɛnea aboɔden abo a ɛwɔ kɔla no nyinaa te ne sɛnea ɛtra hɔ kyɛ nyinaa so.
Ɛwom sɛ saa nsɛmfua a wɔde hyɛ mu a ɛyɛ adwuma yi kyerɛ nea ɔtɔ no nea ɛsɛ sɛ ɔhwɛ kwan bere a ɔrehwɛ Aboɔden abo pɔtee bi a ɛwɔ Kɔla mu de, nanso ɛmmoa mma onhu sɛ ebia ɛyɛ nhwɛsode a ɛwɔ abasobɔde a ɛkorɔn anaa. Eyi te saa efisɛ ɛsɛ sɛ wosusuw Aboɔden abo no su afoforo nso ho, titiriw ne kɔla ne ne twa. Bio nso, ɛho hia sɛ adetɔfo susuw ho bere nyinaa sɛ ebia Ɔbo a Wɔde Kɔla ayɛ no yɛ saa Ɔkwan pɔtee no nhwɛsode a ɛkorɔn anaa. Awiei koraa no, GIA clarity types nhyehyɛe no boa adetɔfo ma wɔte ase sɛ ebia ɛsɛ sɛ wɔhwɛ kwan sɛ wɔde nneɛma bi bɛka Colored Gemstones pɔtee bi ho, mpo nhwɛsode ahorow a ɛkorɔn. Bio nso, wɔde nsɛmfua ahodoɔ na ɛkyekyɛ Aboɔden aboɔ a ɛnyɛ nea ɛda adi te sɛ cabochons, mu. GIA pefeeyɛ nhyehyɛe no betumi adi dwuma wɔ Aboɔden abo a ɛda adi nkutoo ho efisɛ sɛ Aboɔden abo no nyɛ nea ɛda adi a, wontumi nhu nea ɛka ho. Ne saa nti, wɔde Aboɔden abo a ɛnyɛ nea ɛda adi pefee no toto ho sɛ ɛyɛ nea ɛyɛ hann anaasɛ ɛnyɛ nea ɛda adi pefee, a ɛkyerɛ sɛ ɛtwam hann bi anaasɛ ɛntwam koraa. Awiei koraa no, ɛwom sɛ ɛnyɛ nea ɛkɔ so pɛpɛɛpɛ te sɛ GIA International Diamond Grading nhyehyɛe no, GIA Clarity akwankyerɛ no yɛ mfiase a ɛyɛ nwonwa ma adetɔfo a wɔpɛ sɛ wosua pii fa wɔn Colored Gemstone a edi hɔ a wɔpɛ sɛ wɔtɔ no ho. Atifi hɔ nhyehyɛe abien no nyinaa yɛ papa sɛ wobɛtwe adwene asi so bere a worehwehwɛ Colored Gemstones ahorow pii a ɛwɔ Gem Rock Auctions no mu no!
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