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Amazon.com > Home & Kitchen > Home Décor Products > Indoor Fountains & Accessories > Indoor Fountain Accessories > Indoor Fountain Stones & Sea Glass
Crystal Allies Specimens: Natural Amethyst Quartz Crystal Cluster from Uruguay w/ Natural Edges -...
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From Crystal Allies Specimens
This report was last updated 6/16/2017.
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Report Info:
Last Updated: Jun 16, 2017
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Note: We only analyze "reviews" and ignore one-tap "ratings".
Report Card
Pass Overall Grade
FAIL
Unverified Purchases

FAIL
Suspicious Reviewers

FAIL
Phrase Repetition

WARN
Reviewer Participation

PASS
Rating Trend

PASS
Word Count Comparison

PASS
Overlapping Review History

PASS
Reviewer Ease

PASS
Brand Repeats

PASS
Incentivized Reviews

PASS
Deleted Reviews

Most Trusted Reviews
WOW!, I brought this for my mother w/ a card ... [Go to full review]
Jul 11, 2013
100%
TRUST
TRUST
-
Verified Purchaser
-
Take-Back Reviewer (4 deleted Reviews; avg. rating: 4.0)
-
Brand Repeater (2 of 103 reviews for this brand; avg rating: 5.0)
-
Critical Reviewer (avg. rating: 4.3)
Least Trusted Reviews
- After you've received your copy of the item, Crystal!! ... [Go to full review]
Jan 26, 2014
0%
TRUST
TRUST
-
Unverified Purchaser
-
Brand Repeater (2 of 24 reviews for this brand; avg rating: 5.0)
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Overrepresented Participation (posted 24 Reviews)
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Easy Grader (avg. rating: 4.5)
Analysis Details
Fail
Unverified Purchases

9 of the 154 total reviews for this product are unverified purchases. The unverified purchasers have rated this product an average of 5.0 while the verified purchasers have rated this product an average of 4.2. Based on our statistical modeling, the discrepancy in average rating between these two groups is significant enough to believe that the difference is not due to random chance, and may indicate that there are unnatural reviews.
Unverified purchases may be the result of Kindle Unlimited readers, buyers who didn't pay full price, or reviewers who did not purchase the product at Amazon. Read more about our Unverified Purchases test.
Fail
Suspicious Reviewers

Take-Back Reviewers
18 of the 154 reviewers have had at least one of their past reviews for another product deleted. This is an excessively large percentage of Take-Back Reviewers which may indicate unnatural reviews.
Fail
Phrase Repetition

Reviews that contain one of these phrases are NOT necessarily devalued; read more about how this test works here.
11 of the 154 total reviews for this product use substantial repetitive phrases between them. These reviewers have rated this product an average of 4.9 while reviews without substantial repetitive phrases rated this product an average of 4.2. Based on our statistical modeling, the discrepancy in average rating between these two groups is significant enough to believe that the difference is not due to random chance, and may indicate that there are unnatural reviews.
Warn
Reviewer Participation

-
- 83%
- From reviewers with an overrepresented participation
We see the following 2 participation groups with a statistically significant greater concentration than what we'd expect to see:In total, we found that 128 reviewers (or 83%) are within an overrepresented participation group. This is an excessively high number of reviewers in overrepresented participation groups.
Pass
Rating Trend

-
- 0%
- Created on high-volume days
We counted 154 reviews for this product over the span of 1,596 days, an average of 0.1 reviews per day. If these reviews were created randomly, there would be a 99.9% chance that we would see 2 or fewer reviews on any given day. We didn't find any days exceeding this threshold.
Read more about our Rating Trend test.
Read more about our Rating Trend test.
Pass
Word Count Comparison

-
- 0%
- Have an overrepresented word count
We didn't find any review word count groups that had a statistically significant greater concentration than what we'd expect to see in this category.
Read more about our Word Count Comparison test.
Read more about our Word Count Comparison test.
Pass
Overlapping Review History

Reviewers of this product have ALSO reviewed the following products:
3% also reviewed:
BRCbeads 3 Terminated Wired Wrapped Pendant One... by BRCbeads
3% also reviewed:
OPTIMUM NUTRITION GOLD STANDARD 100% Whey Protein... by Optimum Nutrition
3% also reviewed:
Himalayan Glow LED USB Heart-Shaped Salt Lamp,... by Himalayan Glow
2% also reviewed:
Cuccio Colour Nail Polish Professional Lacquer... by Cuccio
2% also reviewed:
(Old Model) Seagate 5TB Desktop HDDSATA 6Gb/s NCQ... by Seagate
2% also reviewed:
High Speed HDMI Cable (1.5 Feet) With Ethernet -... by C&E
1% also reviewed:
The White Queen, Season 1 by Caroline Goodall
Does not include products
from the same brand
from the same brand
19 of the 154 reviewers have substantial overlapping product review history. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.
Pass
Reviewer Ease

The ease score is the average rating for all reviews that a given reviewer submits. The average ease score for reviewers of this product is 4.2, while the average ease score for reviewers in this category is 4.4.
4.2 Product's Average Ease Score
4.4 Category's Average Ease Score
Read more about our Reviewer Ease test.
Pass
Brand Repeats

Brand Repeaters
3 of the 154 reviewers have reviewed other products for this brand. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.
Pass
Incentivized Reviews

On Oct 3, 2016, Amazon prohibited incentivized reviews, however we still test for them since there are still millions in our dataset.
-
- 0%
- Admitted to receiving an incentive
We didn't detect any reviews that used language indicating they were incentivized.
Read more about our Incentivized Reviews test. Check out our study showing that Incentivized Reviewers are much more likely to leave a positive review.
Read more about our Incentivized Reviews test. Check out our study showing that Incentivized Reviewers are much more likely to leave a positive review.
Pass
Deleted Reviews

- 0
- Reviews have been deleted
We have not discovered any deleted reviews for this product.
There are a few limitations to keep in mind regarding the Deleted Reviews test:
There are a few limitations to keep in mind regarding the Deleted Reviews test:
- We don't have a magic ability to collect every single deleted review; we can only identify reviews as deleted if we collect them on one date and then notice they are no longer visible on a subsequent date.
- We have no information on reviews that were never published in the first place.
- We also don't know why these reviews were removed. It could be action from the platform, personal decision by the review author, part of an entire account closure, even some data error on our part, etc.