°ü·Ã ÀÚ·á >>> ¿ø¼® >>> 7. ÇÕ¼º°ú À¯»ç ¿ø¼® (Synthetic & Simulant Gemstones)

 

 C. ´ÙÀ̾î¸Õµå¿Í À¯»çÀÇ ¶Ñ·ÇÇÑ Æ¯¼º (Distinctive Characteristics of Diamonds and Simulant)

a. Lack of read-through effect

    1) Characteristic of various diamond simulants

    2) Only used with round brilliant cut stones

        a) When placed table-down on paper

        b) Read print on paper through table facet

b. Natural - part of the original crystal surface seen on or near the girdle

c. Trigons on a natural = triangular etch marks are growth marks on the original crystal face.

d. Grain lines:

    1) Internal graining seen on the surface in reflected light.

    2) Caused by growth irregularities such as twinning.

e. Monochromatic flash

    1) Synthetic cubic zirconia (CZ) generally exhibits an orange flash over most of its pavilion surface.

    2) Diamond may exhibit blue or orange colors in its pavilion, but in most cases these colors extend only across one or two facets.

    3) Caused by higher dispersion of diamond simulants.

f. Relationship of specific gravity to size.

   1) Diamond has much lower specific gravity than most diamond simulants.

   2) Measuring specific gravity.

       a) Heft (rough estimate)

       b) Heavy liquids (estimate)

       c) Hydrostatic balance (exact)

   3) Specific gravity (SG) can be related to a gemstone's size.

       a) Higher the SG, the smaller the stone is per carat and vice versa.

       b) Diamond with a lower SG than most simulants will be smaller(??) per carat than simulants.

g. Immersion reflection patterns.

    1) Specific gravity liquids causes different reflection patterns when diamond simulant is immersed.

    2) Best with stones cut as round brilliants.

h. Fluorescence

    1) Diamond generally fluoresces stronger under long wave (LW) than short wave (SW) ultraviolet (UV) light.

    2) Most simulants fluoresce stronger under SW.

i. Thermal conductivity

   1) Thermal test.

   2) Measures change in gemstone's surface temperature.

   3) Diamond has highest thermal conductivity for any gem.

   4) Nearly infallible.

a. °¡µ¶¼ºÀÇ °áÇÌ

    1) ¿©·¯ °¡ÁöÀÇ ´ÙÀ̾î¸Õµå À¯»çµéÀÇ Æ¯¼º

    2) ´Ù°¢¿øÇü °¡°ø¿¬¸¶¼®µé¿¡¸¸ ÇØ´çµÊ

        a) Å×À̺íÀ» ¾Æ·¡·Î ÇÏ¿© Á¾ÀÌ À§¿¡ ¿Ã·Á ³õ¾ÒÀ» ¶§

        b) Å×À̺í ÆнÃÆ®¸¦ ÅëÇÏ¿© ÀμâµÈ °ÍÀ» ÀÐÀ» ¼ö ÀÖÀ½

b. ÀÚ¿¬»ê - ȯ»óºÎ¿¡ ¶Ç´Â ºÎ±Ù¿¡ º»·¡ÀÇ °áÁ¤¸éÀÇ ÀϺκп¡¼­¸¸ ÀÐÀ» ¼ö ÀÖÀ½

c. ÀÚ¿¬»êÀÇ »ï¹æÁ¤°è = º»·¡ÀÇ °áÁ¤¸é¿¡ »ï°¢ÇüÀÇ ½Ä°¢Ç¥½Ãµé·Î ÀÌ·ç¾îÁø ¼ºÀåÇ¥½ÃµéÀÌ ÀÖÀ½

d. ¹Ì¼¼ÀÔÀÚ ¼±µé:

    1) ¹Ý»ç±¤¾Æ·¡¿¡¼­ Ç¥¸é¿¡ ³»ºÎÀÔÀÚ ¼±µéÀÌ º¸ÀÓ

    2) ½ÖÁ¤°ú °°Àº ºÒ±ÔÄ¢ÇÑ ¼ºÀå¿¡ ±âÀÎÇÔ

e. ´Ü»ö ¼¶±¤

    1) ÇÕ¼º Å¥ºò ÀúÄÚ´Ï¾Æ (CZ)´Â ÀϹÝÀûÀ¸·Î ÆÛºô¸®¾ð Ç¥¸éÀÇ ´ëºÎºÐ¿¡ °ÉÃļ­ ¿À·£Áö»ö ¼¶±¤À» ³ªÅ¸³¿

    2) ´ÙÀ̾î¸Õµå´Â ÆÛºô¸®¾ð¿¡¼­ û»ö ¶Ç´Â ¿À·£Áö»öÀ» ³ªÅ¸³¾ ¼öµµ ÀÖÁö¸¸, ´ëºÎºÐÀÇ °æ¿ì¿¡, ÀÌ »öµéÀº Çϳª ¶Ç´Â µÎ °³ÀÇ ÆнÃÆ®µé±îÁö¸¸ »¸ÃÄÀÖÀ½

    3) ´ÙÀ̾î¸Õµå À¯»çµéÀº »ê¶õµµ°¡ ³ôÀ½

f. Å©±â¿Í ºñÁß°úÀÇ °ü°è

   1) ´ÙÀ̾î¸Õµå´Â ´ëºÎºÐÀÇ ´ÙÀ̾î¸Õµå À¯»çµé¿¡ ºñÇÏ¿© ¾ÆÁÖ ³·Àº ºñÁßÀ» Áö´Ô

   2) ºñÁß ÃøÁ¤

       a) Áß·® (´ë·«ÀûÀÎ ÆÇ´Ü)

       b) ºñÁß¾× (ÀϹÝÀûÀÎ ÆÇ´Ü)

       c) ºñÁßõĪ (Á¤È®)

   3) ºñÁß(SG)Àº ¿ø¼®ÀÇ Å©±â¿Í °ü·ÃÀÖÀ½

       a) ºñÁßÀÌ Å« µ¹Àϼö·Ï, Áß·®´ç Å©±â°¡ ÀÛÀ½

       b) ´ëºÎºÐÀÇ À¯»çµéº¸´Ù ºñÁßÀÌ ÀÛÀº ´ÙÀ̾î¸Õµå´Â À¯»çµéº¸´Ù Áß·®´ç Å©±â°¡ Å­

g. ´ã±Ý ±¼Àý Çüŵé

    1) ºñÁ߾׵鿡 ´ÙÀ̾î¸Õµå À¯»ç¸¦ ´ã±×¸é ´Ù¸¥ ±¼ÀýÇüŸ¦ ³ªÅ¸³¿

    2) ´Ù°¢¿øÇüÀ¸·Î ¿¬¸¶°¡°øµÈ µ¹¿¡ ÃÖÀûÀÓ

h. Çü±¤

    1) ´ÙÀ̾î¸Õµå´Â ´ÜÆĺ¸´Ù ÀåÆÄÀÇ Àڿܼ±¾Æ·¡¿¡¼­ ´õ °­ÇÑ Çü±¤À» ³¿

    2) ´ëºÎºÐÀÇ À¯»çµéÀº ´ÜÆÄ¿¡¼­ ´õ °­ÇÑ Çü±¤À» ³¿

i. ¿­ ÀüµµÀ²

   1) ¿­ ½ÃÇè

   2) ¿ø¼®Ç¥¸éÀÇ ¿Âµµº¯È­¸¦ ÃøÁ¤

   3) ´ÙÀ̾î¸Õµå´Â ¾î¶² º¸¼®µéº¸´Ùµµ ¿­ ÀüµµÀ²ÀÌ ³ôÀ½

   4) °ÅÀÇ È®½ÇÇÔ

 D. ´ÙÀ̾î¸Õµå¿Í À¯»çÀÇ ¶Ñ·ÇÇÑ Æ¯¼º (Distinctive Characteristics of Diamonds and Simulant)

 °ü·Ã ÀÚ·á >>> ¿ø¼® >>> 7. ÇÕ¼º°ú À¯»ç ¿ø¼® (Synthetic & Simulant Gemstones)

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