Natural pearls grow in wild oysters. The process starts when an irritant, such as a grain of sand or a piece of shell, gets inside an oyster's shell. To protect its delicate body from the irritant, the pearl secretes a substance called nacre to surround the irritant. The oyster never stops secreting nacre, so over the years the nacre layers build up into a genuine pearl. While natural and cultured pearls are extremely similar, you can tell the difference between them with the right equipment. The key difference between natural and cultured pearls lies in the nacre layer. A natural pearl's nacre layer is much thicker than that of a cultured pearl, even when the two have a similar diameter. Natural pearls are less transparent than cultured pearls. If you place a natural pearl against a dark background - like a box lined in black cloth - and put it under a strong light, the natural pearl will look like a small, white, homogenous ball with no discernible inner rings. When you do the same to a cultured pearl, you will see a thin brown line between the nacre layer and the nucleus of the pearl. Natural pearls are extremely rare. In nature, only about one in 10,000 oysters will produce a pearl. Of those, only a small percentage will achieve the size, shape, and color of a desirable gemstone. The odds of finding a perfect natural pearl are around one in a million. Because of their rarity, natural pearls are hardly ever found in most pearl jewelry stores. Most pearls for sale in the market today have been cultured.
Recently, there has been a ton of debate as to the importance of pearl. More specifically, in regard to the passage, the writer puts forth the idea that natural pearl is very rare and demanding things and very discernible from the cultural pearl. In the listening passage, the lecturer is quick to point out there are some serious flaws in the writer’s claims. In fact, the professor believes cultural pearls are almost the same as natural pearls and addresses, in detail, the trouble with each point made in the reading text.
First and foremost, the author of the reading states that natural pearl is different from cultural pearl in many ways. Some professionals in the same field, however, stand in firm opposition to this claim. In the listening, for example, the professor states cultural pearls are almost the same as natural pearls. He goes on to say that cultural pearls hardly can differ from natural pearls.
Secondly, one group of scholars, represented by the writer, thinks that natural pearls are very precious and very rare. Only about one in 10,000 oysters produce a perfect natural pearl and the quality of a natural pearl is very high. Of course, though, not all experts in this sector believe this is accurate. Again, the speaker specifically addresses this point when he states the quality of a cultural pearl is also very good. Additionally, he notes that now the cultural pearls are mostly used as ornaments as they cannot be differentiated from natural pearls.
Finally, the author wraps his argument by positing that the making of natural pearl needs at least ten years. Not surprisingly, the lecturer takes issue with this claim by contending that for making a cultural pearl only two years is enough.
To sum up, both the writer and professor hold conflicting views about the pearl. It is clear that they will have trouble, in case of finding common ground on this issue.
Transition Words or Phrases used:
also, finally, first, however, if, second, secondly, so, as to, at least, for example, in fact, of course, in regard to, to sum up
Attributes: Values AverageValues Percentages(Values/AverageValues)% => Comments
Performance on Part of Speech:
To be verbs : 15.0 10.4613686534 143% => OK
Auxiliary verbs: 3.0 5.04856512141 59% => OK
Conjunction : 7.0 7.30242825607 96% => OK
Relative clauses : 9.0 12.0772626932 75% => More relative clauses wanted.
Pronoun: 21.0 22.412803532 94% => OK
Preposition: 43.0 30.3222958057 142% => OK
Nominalization: 3.0 5.01324503311 60% => More nominalizations (nouns with a suffix like: tion ment ence ance) wanted.
Performance on vocabulary words:
No of characters: 1600.0 1373.03311258 117% => OK
No of words: 322.0 270.72406181 119% => OK
Chars per words: 4.96894409938 5.08290768461 98% => OK
Fourth root words length: 4.23607819155 4.04702891845 105% => OK
Word Length SD: 2.50835569813 2.5805825403 97% => OK
Unique words: 163.0 145.348785872 112% => OK
Unique words percentage: 0.506211180124 0.540411800872 94% => More unique words wanted or less content wanted.
syllable_count: 475.2 419.366225166 113% => OK
avg_syllables_per_word: 1.5 1.55342163355 97% => OK
A sentence (or a clause, phrase) starts by:
Pronoun: 3.0 3.25607064018 92% => OK
Article: 9.0 8.23620309051 109% => OK
Subordination: 0.0 1.25165562914 0% => More adverbial clause wanted.
Conjunction: 0.0 1.51434878587 0% => OK
Preposition: 8.0 2.5761589404 311% => Less preposition wanted as sentence beginnings.
Performance on sentences:
How many sentences: 17.0 13.0662251656 130% => OK
Sentence length: 18.0 21.2450331126 85% => The Avg. Sentence Length is relatively short.
Sentence length SD: 28.8894803713 49.2860985944 59% => The essay contains lots of sentences with the similar length. More sentence varieties wanted.
Chars per sentence: 94.1176470588 110.228320801 85% => OK
Words per sentence: 18.9411764706 21.698381199 87% => OK
Discourse Markers: 7.64705882353 7.06452816374 108% => OK
Paragraphs: 5.0 4.09492273731 122% => OK
Language errors: 0.0 4.19205298013 0% => OK
Sentences with positive sentiment : 10.0 4.33554083885 231% => Less positive sentences wanted.
Sentences with negative sentiment : 4.0 4.45695364238 90% => OK
Sentences with neutral sentiment: 3.0 4.27373068433 70% => OK
What are sentences with positive/Negative/neutral sentiment?
Coherence and Cohesion:
Essay topic to essay body coherence: 0.173263920534 0.272083759551 64% => OK
Sentence topic coherence: 0.0662931651797 0.0996497079465 67% => OK
Sentence topic coherence SD: 0.0478637944917 0.0662205650399 72% => OK
Paragraph topic coherence: 0.100780038493 0.162205337803 62% => OK
Paragraph topic coherence SD: 0.0413914578735 0.0443174109184 93% => OK
Essay readability:
automated_readability_index: 11.4 13.3589403974 85% => Automated_readability_index is low.
flesch_reading_ease: 61.67 53.8541721854 115% => OK
smog_index: 3.1 5.55761589404 56% => Smog_index is low.
flesch_kincaid_grade: 9.1 11.0289183223 83% => OK
coleman_liau_index: 11.55 12.2367328918 94% => OK
dale_chall_readability_score: 7.37 8.42419426049 87% => OK
difficult_words: 58.0 63.6247240618 91% => OK
linsear_write_formula: 10.5 10.7273730684 98% => OK
gunning_fog: 9.2 10.498013245 88% => OK
text_standard: 12.0 11.2008830022 107% => OK
What are above readability scores?
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Write the essay in 20 minutes.
Rates: 80.0 out of 100
Scores by essay e-grader: 24.0 Out of 30
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Note: the e-grader does NOT examine the meaning of words and ideas. VIP users will receive further evaluations by advanced module of e-grader and human graders.