CANAI BATU/Gem Cutting Demonstration

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SEKADAR INFO (RAWATAN DELIMA)

Lead glass-filled rubies represent material that is heavily treated to improve transparency. The treatment is highly unstable, resulting in stones that can be easily damaged beyond repair. The material is relatively easy to identify using a gemological microscope or jeweler's 10x loupe. Tell-tale signs include: a flash-effect, large gas bubbles in a stone's cavities, or flattened bubbles confined to wide fractures filled with glass. Avoid any jewelry repair procedure and keep the material out of solvents, including basic household cleaning solutions. Sometimes called composite ruby, hybrid ruby, ruby with glass, or a host of other names, GIA considers some of this material so heavily treated that it does not warrant being called ruby at all, but rather a manufactured product.

To gain a deeper understanding of this material, read "A Discussion on Ruby-Glass Composites & Their Potential Impact on the Nomenclature in use for Fracture-Filled or Clarity Enhanced Stones in General" (February 2012).

Source GIA Global Dispatch / www.GIA.edu

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TAKE NOTE EVERYONE....BEWARE!!!MAKE A RESEARCH BEFORE BUYING IT.

CONTOH POTONGAN BATU PERMATA

ROUND

PRINCESS

CUSHION

HEART

PEAR

MARQUISE

RADIANT

ASSCHER

EMERALD CUT

OVAL

SEDIKIT PERBINCANGAN TENTANG SAPPHIRE(NILAM)

Delima dan nilam adalah bahan yang sama, iaitu terdiri daripada mineral korundum. Ia adalah batu permata kedua yang paling keras  selepas berlian iaitu 9 di skala mohs.  Korundum merah dikenali sebagai  batu delima, manakala semua warna lain disebut sebagai sapphire. Manakala biru adalah warna nilam klasik, nilam sebenarnya didapati dalam pelbagai warna.

Warna yang paling terkenal untuk nilam ialah biru. Nilam ungu sangat jarang ditemui, kebiasaannya ia boleh ditemui di negara seperti Ceylon/Sri Lanka dan Tanzania.

Nilam kuning kebiasaanya mempunyai warna yang ‘slow’. Kuningnya tidaklah terlampau terang. Untuk menaikkan lagi warna kuning batu, rawatan haba dikenakan dan  menghasilkan warna kuning keemasan, yang lebih terang. Batu-batu ini dijumpai di Sri Lanka, Thailand, Australia, Tanzania dan Madagascar. Warna kuning ini disebabkan oleh kesan besi dalam batu.

Padparadscha adalah perkataan Sinhala bunga teratai untuk Sri Lanka. Warna nilam ini amat jarang ditemui  kerana  mempunyai warna merah jambu dan oren serentak.

Species:Corundum

Warna:

v  Yellow Sapphire (kadang-kadang juga dipanggil "Golden Sapphire" )(berbeza dengan lemon topaz dan batu cempaka)

v  -Pink Sapphire (berbeza dengan Rubellite dan Delima)J

v  -White Sapphire (menerangkan Sapphire yang tidak berwarna)

v  -Green Sapphire

v  -Ungu Sapphire(berbeza dengan Kecubung)

v  -Orange Sapphire

v  -Black Sapphire(berbeza dengan baiduri)

Chemical composition: Al2O3, Aluminum Oxide 

Membeli Sapphire???

Warna

Nilam berwarna biru, warna yang paling popular, keamatan warna biru sebagai faktor yang paling penting. Sebagai contoh, anda mungkin mempunyai batu besar, tetapi jika warna yang sudah lusuh, biru yang lemah, maka nilai batu akan menjadi lebih rendah. Mencari batu yang mempunyai warna biru terang tanpa sebarang bintik hitam dan warna yang sekata. Secara keseluruhan, nilam yang terlalu tua atau terlalu muda dalam warna mempunyai nilai yang rendah.

Lampu

Cara melihat nilam terbaik dilihat dengan lampu neon atau siang hari. Cahaya incandescent lebih merah, dan nilam kelihatan kurang menarik dalam pencahayaan ini.

Clarity

Sapphire cenderung untuk menjadi lebih bersih/jernih daripada delima. Cari batu-batu yang ‘eye clean’. Ini bermakna tiada benda asing yang dapat dilihat dengan mata kasar.

Potongan

Pelbagai bentuk dan gaya pemotongan terdapat. Oval, kusyen, dan pusingan(round). Diantara bentuk lainnya seperti potongan zamrud, air mata, heart dan lain-lain lagi.

 KECIK-KECIK CILI PADI BLAKE.

SEDIKIT INFO TENTANG PARAIBA TOURMALINE

It is a rare event when a new gem variety causes tremendous excitement in the gemstone world. It happened with tanzanite in the 1960's, but only with the marketing muscle of Tiffany & Co. behind it. The case of paraiba tourmaline in the 1990's was a different story.

The unusual blue-green paraiba tourmaline was first discovered in the Brazililan state of Paraiba in 1989 by a dedicated miner named Heitor Barbosa. Barbosa worked the Mina da Bathalha for over 5 years before he found the first samples of this extremely rare tourmaline. These gems had an unusual vivid blue-green that had never been seen before in any gemstone. They appeared to glow with a neon or electric-like quality, even in the rough stone. Analysis showed that this unique effect was due to the presence of copper and manganese.

The paraiba tourmaline was first introduced to the gemstone world at the annual Tucson gem show in early 1990. It caused an immediate sensation. Top specimens sold for as much as $3,000 a carat. At the time that price seemed ridiculously high for a tourmaline; today, ironically, it seems ridiculously low.

The market demand for the paraiba tourmaline was so strong, and the supply so limited, that it became nearly impossible for gem dealers to buy stock. However, in 2001 some similar copper-bearing blue-green tourmaline was discovered in Nigeria, though the color saturation was not as good as the Brazilian material. Then in 2005 a third find was made, this time in Mozambique. The Mozambique material is found in a range of colors, from green to blue-green to violet, with color more similar to the Brazilian paraiba. In fact the Mozambique paraiba is often cleaner than the Brazilian (which tends to be heavily included) and is found in larger sizes.

The new finds of copper-bearing tourmaline led to a vigorous debate in the gemstone community about whether the term "paraiba" should be used for the African copper-bearing tourmaline. Some argued that the Brazilian and African material were chemically similar, if not identical. Others argued that "paraiba" was a location name and should be reserved for the Brazilian material only. Some gem dealers started to use the term "African paraiba."

In 2006, the LMHC (Laboratory Manual Harmonization Committee) agreed that "paraiba" should refer to a species of tourmaline, and not indicate a geographic origin. The term "paraiba" should not be capitalized (as it is in the name of the Brazilian state). The term "paraiba tourmaline" may now refer to gems found in Brazil, Nigeria, and Mozambique, and wherever new deposits of copper-bearing tourmaline may be found in the future.

PERIDOT ASLI

COLOR :  OLIVINE GREEN

CARAT : +-6.0 CT

CUT :  OVAL

CLARITY : TRANSPARENT

LUSTER : EXCELLENT

ORIGIN : PAKISTAN

MOH'S HARDNESS : 6.5

CONDITION : SCRATCH AND CRACK FREE

ENHANCEMENT : NONE
PRICE : RM350

ZAMRUD

ZAMRUD SINONIM DENGAN MASYARAKAT KITA. TETAPI JARANG ORANG TAHU@KENAL DARI MANA ASAL USUL@LOMBONG ZAMRUD TERSEBUT.YANG PALING POPULAR ADALAH ZAMRUD COLUMBIA. AKAN TETAPI REALITINYA LOMBONG ZAMRUD TERDAPAT DI BEBERAPA LAGI TEMPAT DI DUNIA INI. CONTOH NYA DARI LOMBONG PANJSHIR(AFGHANISTAN),MUZO(COLOMBIA),MITONDO(ZAMBIA) DAN LAIN-LAIN LAGI. DIBAWAH IALAH TURUTAN 'RANKING' ZAMRUD MENGIKUT LOMBONG. PERBANDINGAN BERDASARKAN ZAMRUD YANG PALING BERKUALITI DARIPADA SESEBUAH LOMBONG TERSEBUT:-


1) PANJSHIR(AFGHANISTAN)

CONTOH

CONTOH

CONTOH

2) MUZO(COLOMBIA)

CONTOH

CONTOH

CONTOH

3) MITONDO(ZAMBIA)

CINCIN ZAMRUD COLUMBIA ASLI (SOLD)

PERMATA ZAMRUD COLUMBIA ASLI

CARAT :+- 15 CARATT
SIZE :18MM X14MM X10MM

CONDITION : SCRATCH AND CRACK FREE

COLOR : LIGHT GREEN

CUT : OVAL CABOCHON

ORIGIN : COLOMBIA

MOH'S HARDNESS : 7.0

ENHANCEMENT : UNHEATED/UNTREATED 

PRICE :RM2000

HARGA BOLEH DIRUNDING