Tell Us More

Share a bit more information with us
to finalize your Free Quote request.

You are looking for information regarding:

2 to 10+ carat
Round Diamond
Country
United States Afghanistan Aland Islands Albania Algeria American Samoa Andorra Angola Anguilla Antarctica Antigua and Barbuda Argentina Armenia Aruba Australia Austria Azerbaijan Bahamas Bahrain Bangladesh Barbados Belarus Belgium Belize Benin Bermuda Bhutan Bolivia, Plurinational State of Bonaire, Sint Eustatius and Saba Bosnia and Herzegovina Botswana Bouvet Island Brazil British Indian Ocean Territory Brunei Darussalam Bulgaria Burkina Faso Burundi Cambodia Cameroon Canada Cape Verde Cayman Islands Central African Republic Chad Chile China Chinese Taipei Christmas Island Cocos (Keeling) Islands Colombia Comoros Congo Congo, the Democratic Republic of the Cook Islands Costa Rica Cote d'Ivoire Croatia Cuba Curaçao Cyprus Czech Republic Denmark Djibouti Dominica Dominican Republic East Timor Ecuador Egypt El Salvador Equatorial Guinea Eritrea Estonia Ethiopia Falkland Islands (Malvinas) Faroe Islands Fiji Finland France French Guiana French Polynesia French Southern Territories Gabon Gambia Georgia Germany Ghana Gibraltar Greece Greenland Grenada Guadeloupe Guam Guatemala Guernsey Guinea Guinea-Bissau Guyana Haiti Heard Island and McDonald Islands Holy See (Vatican City State) Honduras Hong Kong Hungary Iceland India Indonesia Iran Iran, Islamic Republic of Iraq Ireland Isle of Man Israel Italy Jamaica Japan Jersey Jordan Kazakhstan Kenya Kiribati Korea Korea, Democratic People's Republic of Korea, Republic of Korea (South) Kuwait Kyrgyzstan Lao People's Democratic Republic Laos Latvia Lebanon Lesotho Liberia Libyan Arab Jamahiriya Liechtenstein Lithuania Luxembourg Macao Macedonia, the former Yugoslav Republic of Madagascar Malawi Malaysia Maldives Mali Malta Marshall Islands Martinique Mauritania Mauritius Mayotte Mexico Moldova, Republic of Monaco Mongolia Montenegro Montserrat Morocco Mozambique Myanmar Namibia Nauru Nepal Netherlands Netherlands Antilles New Caledonia New Zealand Nicaragua Niger Nigeria Niue Norfolk Island Northern Mariana Islands Norway Oman Pakistan Palestinian Territory, Occupied Panama Papua New Guinea Paraguay Peru Philippines Pitcairn Poland Portugal Puerto Rico Qatar Republic of China Reunion Romania Russian Federation Rwanda Saint Barthélemy Saint Helena, Ascension and Tristan da Cunha Saint Kitts and Nevis Saint Lucia Saint Martin (French part) Saint Pierre and Miquelon Saint Vincent and the Grenadines Samoa San Marino Sao Tome and Principe Saudi Arabia Senegal Serbia Serbia and Montenegro Seychelles Sierra Leone Singapore Sint Maarten (Dutch part) Slovakia Slovenia Solomon Islands Somalia South Africa South Georgia and the South Sandwich Islands South Sudan Spain Sri Lanka Sudan Suriname Svalbard and Jan Mayen Swaziland Sweden Switzerland Syrian Arab Republic Taiwan Tajikistan Tanzania, United Republic of Thailand Timor-Leste Togo Tokelau Tonga Trinidad and Tobago Tunisia Turkey Turkmenistan Turks and Caicos Islands Tuvalu Uganda Ukraine United Arab Emirates United Kingdom United States Minor Outlying Islands Uruguay Uzbekistan Vanuatu Venezuela, Bolivarian Republic of Vietnam Virgin Islands, British Wallis and Futuna Western Sahara Yemen Zambia Zimbabwe

May 2000

When Lazare Kaplan and General Electric first announced the Pegasus process, the trade thought it might be years before scientists could detect whether the stones were treated.

But it took a lot less than that. Two De Beers scientists, writing in the Spring 2000 issue of Gems and Gemology, say they have come up with a way to detect a “vast majority” of the diamonds. However, for now, this method is currently not simple enough to be done by most jewelers, according to reports.

The GIA has also identified a new laser treatment that does not have the surface-reaching drill hole traditionally associated with laser drilling.

The GIA notes that, in traditional laser drilling, a hole drilled to a dark inclusion in the interior of the diamond serves as a channel for the strong acid used to remove or minimize the dark material.

But this new treatment uses laser-generated heat to expand the cleavages of the diamond so you can pour acid through them, thereby soaking out the black piques. Naturally, the piques have to be close to the surface for this to happen. The laser leaves evidence of one or more internal channels within the cleavage or adjacent to the inclusion, but there is no surface reaching drill hole, and the lasering is only on the surface.

In a way, this is better than traditional lasering, since it is does not leave a drill hole. We even question whether it should be called “laser drilling,” because there is no drill involved.

On the other hand, this treatment is worse in some ways because it leaves an open imperfection, which could eventually gather dust and other particles, and hurt its brilliance.

Related Articles

New Diamond engagement ring for Michelle Obama?
Blog Archive

New Diamond engagement ring for Michelle Obama?

Lesedi La Rona cut, first 60 gems unveiled
Blog Archive

Lesedi La Rona cut, first 60 gems unveiled

Blue diamond prices rise above pink and yellow diamonds
Blog Archive

Blue diamond prices rise above pink and yellow diamonds

WhatsApp chat