rough

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rough

1. a sketch or preliminary piece of artwork
2. the rough Golf the part of the course bordering the fairways where the grass is untrimmed
3. Tennis Squash Badminton the side of a racket on which the binding strings form an uneven line

rough

[rəf]
(lapidary)
An uncut gemstone.
References in periodicals archive ?
The H1 2019 average realised rough diamond price decreased by seven per cent to US$151/carat (H1 2018: US$162/carat), which was driven by a four per cent reduction in the average rough price index and a change in the sales mix in response to weaker conditions.
Recent statistics on the net imports of rough diamonds to India and net export of polished diamonds from this country suggest that the diamond market is gradually coming back to supply-demand balance," commented Evgeny Agureev, Director of the United Selling Organization ALROSA, member of the Executive Committee.
Furthermore, he noted that consolidated rough diamond sales decreased by 13 per cent to 15.5 million carats while the average rough price index decreased by 4 per cent.
Clara uses proprietary analytics, with the latest cloud and blockchain technologies, to sell rough diamonds individually, based on polished characteristics and demand, transforming the sales process, driving efficiencies and unlocking value for diamond producers and manufacturers alike.
In the first nine months of 2018, the DDE recorded a remarkable increase in rough diamond tenders and total sales of just under $200 million, up by 75 per cent compared to 2017.
The President & CEO of CDGI, Veronica Waldman, recently orchestrated and concluded CDGI's Quarterly June 2018 Premium Rough Diamond Tender for Matched Parcels of Premium Rare White Rough Diamonds with Dodecahedron Shapes from 6.00cts++ and larger D-F Color & FL-VS2 Clarity Rough Goods.
Summary: Deal is expected to boost the flow of rough diamonds through Dubai
Commenting on the occasion, Vince Cook, CEO of NBF said: "Given the key strength that Dubai has as an established center for the rough diamond trade, it is crucial that NBF remains an integral part of this journey.
A model shows off the 1109 carat "Lesedi La Rona", the largest gem quality rough diamond discovered in over 100 years during a sale preview at Sotheby's auction house in London
* The country was the world's fourth-largest rough diamond producing nation, producing 24.7Mct in 2014, up by 8.7% compared with 2013 on account of 6.1% increase in production at the Orapa mine in 2014.
Rough diamond prices will remain under pressure over the next 12-18 months.
It also provides information about PGM and rough diamond reserves, historic and forecast data on platinum and rough diamond production, production forecast by selected platinum and diamond mines, the competitive landscape and active, exploration and development platinum and diamond projects.