The difference between precious and semi-precious gemstones may seem self-explanatory (“Precious gemstones are just more…precious!) And to some extent, you would be right. But it depends on when you ask the question. Precious and semi-precious gemstones have changed titles, in a sense, throughout history:
In modern usage the precious stones are diamond, ruby, sapphire and emerald, with all other gemstones being semi-precious.
This distinction is unscientific and reflects the rarity of the respective stones in ancient times, as well as their quality: all are translucent with fine color in their purest forms, except for the colorless diamond, and very hard, with hardnesses of 8-10 on the Mohs scale. Other stones are classified by their color, translucency and hardness.
The traditional distinction does not necessarily reflect modern values, for example, while garnets are relatively inexpensive, a green garnet called Tsavorite, can be far more valuable than a mid-quality emerald. Another unscientific term for semi-precious gemstones used in art history and archaeology is hardstone. Use of the terms ‘precious’ and ‘semi-precious’ in a commercial context is, arguably, misleading in that it deceptively implies certain stones are intrinsically more valuable than others, which is not the case.
So as you can see, “precious” and “semi-precious” are terms with changing meanings. And of course, whatever gem you like is precious to you!
J-hoop earrings with just under 1 3/4ct t.w. (dia equiv) Charles and Colvard created round moissanite available in 14kt white gold only.
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Tofauti kati ya mawe ya thamani na nusu ya thamani inaweza kuonekana kujieleza (mawe ya thamani ni tu zaidi... ya thamani!) Na kwa kadiri fulani, ungekuwa na haki. Lakini inategemea ni lini unauliza swali hilo. Mawe ya thamani na nusu ya thamani yamebadilisha majina, kwa maana fulani, katika historia yote: Katika matumizi ya kisasa mawe ya thamani ni almasi, rubini, sapphire na emerald, na mawe mengine yote ya thamani ni nusu ya thamani. Tofauti hii ni isiyo ya kisayansi na inaonyesha upungufu wa mawe husika katika nyakati za kale, pamoja na ubora wao: wote ni translucent na rangi nzuri katika aina zao safi, isipokuwa almasi isiyo na rangi, na ngumu sana, na ugumu wa 8-10 kwenye kiwango cha Mohs. Mawe mengine hugawanywa kulingana na rangi yake, uwazi wake, na ugumu wake. Kwa mfano, wakati granite ni ya bei nafuu, granite ya kijani inayoitwa Tsavorite inaweza kuwa na thamani zaidi kuliko emerald ya ubora wa kati. Neno jingine lisilo la kisayansi linalotumiwa katika historia ya sanaa na akiolojia kurejelea mawe ya thamani ni jiwe gumu. Matumizi ya maneno "ya thamani" na "ya nusu thamani" katika muktadha wa kibiashara ni, arguably, kupotosha katika kwamba ni deceitfully ina maana baadhi ya mawe ni intrinsically thamani zaidi kuliko wengine, ambayo si kesi. Kwa hiyo kama unavyoweza kuona, "thamani" na "nusu-thamani" ni maneno yenye maana zinazobadilika. Na bila shaka, jiwe lolote unalopenda ni lenye thamani kwako! J-Hoop pete za masikio na chini ya 1 3 4ct t.w. Charles na Colbert waliunda moissanite ya mviringo inayopatikana katika dhahabu nyeupe ya 14k tu. Inapatikana kwa bei nafuu! Kuokoa 40% juu ya bidhaa zilizochaguliwa Tumia kuponi <unk>Discount40<unk> wakati wa malipo. (Punguzo litahesabiwa wakati wa malipo) Wakati vifaa mwisho