What caused this sudden increase in diamond prices?

[kenny]

https://www.pricescope.com/blog/retail-diamond-prices-rise-september

Retail Diamond Price Percentages for September 2012

0 to 0.5 carat: no change

0.5 to 1.0 carat: + 2%

1.0 to 2.0 carats: + 5%

2.0 to 3.0 carats: + 6%

3.0 to 4.0 carats: + 6%

4.0 to 99 carats: + 7%

 

[floyd13]

Maybe the lead up to the holiday season could be increasing demand?

 

[ihy138]

Maybe the lead up to the holiday season could be increasing demand?

That's just what I was thinking. People may be already buying diamonds in preparation for their holiday proposals.

 

[texaskj]

I think the cartel(s) takes lessons from OPEC.

 

[kenny]

Maybe the lead up to the holiday season could be increasing demand?

That's just what I was thinking. People may be already buying diamonds in preparation for their holiday proposals.

Clearly, divorce season is the time to diamond shop.
Which month is that?

Seriously, if the holidays explains such a sharp September increase, there must be a similar bump every year.
Does anyone know how to look at these data from previous years?

 

[ihy138]

I'm interested to know as well. Anybody?

 

[Karl_K]

RapNet does not agree with the increases:
http://www.diamonds.net/news/NewsItem.aspx?ArticleID=41220

 

[Karl_K]

Neither does Idex
http://www.idexonline.com/Diamond_Index_Drivers.asp?SID=

 

[Karl_K]

My guess is that the mix of stones on the PS database changed with more higher end ags0/giaX stones showing up giving the appearance of price increases.
Because they are most in demand here it makes sense they would increase at this time ramping up for the holiday season.

 

[shakenrocks]

The real answer is that they know I've been shopping