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Diamond Prices Slide Before Diwali Break

1 ct. RAPI Drops 0.9% in October

Nov 6, 2018 5:00 AM   By Rapaport
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RAPAPORT PRESS RELEASE, November 6, 2018, New York… Polished-diamond prices softened in October as inventory levels rose ahead of the Diwali festival. Despite the decline, sentiment improved, with expectations growing for the US holiday season.

The RapNet Diamond Index (RAPI™) for 1-carat diamonds fell 0.9% in October. The index was up 1.3% since the beginning of the year and 0.7% from a year ago, following strong gains in the first half of 2018.

RapNet Diamond Index (RAPI™)
October Year to date
Jan. 1 to Nov. 1
Year on year
Nov. 1, 2017, - Nov. 1 2018
RAPI 0.30 ct. -1.4% 3.3% 4.5%
RAPI 0.50 ct. -0.5% 4.1% 4.4%
RAPI 1 ct. -0.9% 1.3% 0.7%
RAPI 3 ct. -1.0% -1.0% -2.4%
© Copyright 2018, Rapaport USA Inc.

Diamond trading was steady during the month, with US holiday orders driving sales. Buyers were looking for bargains in India, where local dealers and manufacturers have been under pressure due to the weak rupee — down 13% since January 1 — and tighter bank lending. Factories have closed for most of November for Diwali.

Indian suppliers are holding large inventories during the break, particularly of melee and 0.30-carat goods. The volume of diamonds listed on RapNet grew 13% during the month to 1.6 million stones, a rise of 35% since the beginning of 2018 and 11% compared with a year ago.

Manufacturers have reduced production of those categories, as rough trading has slowed in the past few months. Alrosa and De Beers sales volume declined during the third quarter, but the companies reported higher average prices, signaling a shift in demand away from smaller, cheaper diamonds.

Preparations for the US holiday season are supporting polished trading. Chinese buyers are cautious due to uncertainties surrounding the US-China trade war and the depreciation of the yuan currency. However, US retailers are optimistic for the season, as consumer confidence continues to rise. Jewelers require less in-store inventory and are taking more goods on memo; their focus is now on improving their omni-channel offerings, with online sales expected to spike.

Rapaport Media Contacts:
US: Sherri Hendricks +1-702-893-9400
International: Alex Shine +1-718-878-5138
Mumbai: Prashant Bhojani +91-97694-66855

About the Rapaport RapNet Diamond Index (RAPI™): The RAPI is the average asking price in hundred $/ct. of the 10% best-priced diamonds, for each of the top 25 quality round diamonds (D-H, IF-VS2, GIA-graded, RapSpec-A3 and better) offered for sale on RapNet® – The Diamond Market. has daily listings of approximately 1.6 million diamonds valued at approximately $7.4 billion. Additional information is available at

About the Rapaport Group: The Rapaport Group is an international network of companies providing added-value services that support the development of ethical, transparent, competitive and efficient diamond and jewelry markets. Established in 1976, the Group has more than 20,000 clients in over 121 countries. Group activities include Rapaport Information Services, providing the Rapaport benchmark Price List for diamonds, as well as research, analysis and news; RapNet – the world’s largest diamond trading network, with over 15,000 members in 97 countries and daily listings of approximately 1.6 million diamonds valued at approximately $7.4 billion; Rapaport Laboratory Services, providing GIA and Rapaport gemological services in India, Israel and Belgium; and Rapaport Trading and Auction Services, the world’s largest recycler of diamonds, selling over 500,000 carats of diamonds a year. Additional information is available at

Image: (Shutterstock)
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Tags: Alrosa, De Beers, diamonds, Dollar, Jewelry, Polished Diamonds, Rapaport, RAPI, Rough Diamonds, Rupee, Yuan
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