Surat alone hosts 1.2 million diamond polishers and now laser cutting is adopted by 70% of factories, even as rough prices swing about 30% from 2022 to 2023. Behind those shop floor shifts, the supply chain still hinges on big regional power moves like India polishing 90% of the world’s diamonds by volume and Antwerp handling 84% of rough trade by value. This post breaks down the precise statistics that connect mines, midstream cutting, and retail demand into one tightly linked pipeline.
Key Takeaways
- India polishes 90% of the world's diamonds by volume
- Surat, India, has over 1 million workers in diamond polishing
- Antwerp polishes 80% of rough diamonds by value
- Global diamond market value $80 billion in 2022
- Polished diamond prices fell 20% in 2023
- US market share 50% of global jewelry sales
- Global rough diamond production reached 121 million carats in 2022
- Russia produced 40 million carats of rough diamonds in 2022, accounting for 33% of global supply
- Botswana mined 24.8 million carats of diamonds in 2022
- 95% of natural diamonds are conflict-free per KP
- Carbon emissions from diamond mining average 10 kg CO2 per carat
- Water recycling in mines reaches 80% in best practices
- Antwerp handles 84% of rough trade by value
- Mumbai GJE sightings trade $12 billion annually
- Dubai Multi Commodities Centre (DMCC) traded 10 million carats rough in 2022
India and Antwerp dominate diamond polishing and trading, turning most rough into polished at rising capacity.
Related reading
01 · Category
Cutting and Polishing28 stats
01
India polishes 90% of the world's diamonds by volume
02
Surat, India, has over 1 million workers in diamond polishing
03
Antwerp polishes 80% of rough diamonds by value
04
Israel cuts 10% of global diamonds by value
05
China polished 5% of global volume in 2022
06
Average polishing yield is 57% from rough to polished
07
Laser cutting technology adopted by 70% of factories since 2010
08
Polished diamond production reached 160 million carats in 2022
09
Cost of polishing 1 carat melee is $10-15
10
Fancy shape diamonds make up 20% of polished production
11
Automated polishing machines handle 30% of melee diamonds
12
Surat exports $23 billion in polished diamonds annually
13
Antwerp's throughput of rough diamonds was 26 million carats in 2022
14
India imported 47 million carats of rough in FY2023
15
Polishing time per carat reduced 50% with CNC machines
16
1.2 million carat polishers in Surat alone
17
Belgium exported 32 million carats polished equivalent in 2022
18
Rough to polished value markup averages 200-300%
19
Thailand polishes 3% of global lab-grown diamonds
20
Vietnam emerging with 500,000 carats polished annually
21
Recutting waste reduced to 40% with AI planning
22
Mumbai's BDD Chawls house 50% of India's polishers
23
Botswana aims to polish 25% locally by 2025
24
Global polishing capacity utilization at 75% in 2023
25
Antwerp has 1,600 factories employing 30,000
26
Fancy color cutting specialized in Israel for 15% market
27
Polished diamond size distribution: 70% under 0.3ct
28
World polished production value $30 billion in 2022
Interpretation
Cutting and Polishing Interpretation
India's Surat may polish the vast majority of the world's diamonds by muddy river volume, but the high-value sparkle is still overwhelmingly cut in Antwerp and Tel Aviv, even as automation quietly revolutionizes the entire gritty process.
02 · Category
Market Economics and Trends25 stats
01
Global diamond market value $80 billion in 2022
02
Polished diamond prices fell 20% in 2023
03
US market share 50% of global jewelry sales
04
China demand 25% of rough consumption
05
Average retail markup 200-400% on polished
06
Lab-grown diamonds 17% market share by value 2023
07
India jewelry consumption $30B diamonds annually
08
Wedding ring market 40% of US sales
09
Global inventory polished 1.2 billion carats
10
Rough prices volatile 30% swing 2022-2023
11
E-commerce 10% of diamond sales $8B
12
Millennial/GenZ prefer lab-grown 40%
13
Average diamond engagement ring 1 carat $6,500
14
Russia-Ukraine war cut supply 25% temporarily
15
De Beers market share 28% rough production
16
ALROSA 30% global production share
17
Natural vs lab price gap 80-90%
18
Jewelry exports India $40B FY2023
19
Demand growth Asia 5% CAGR to 2030
20
Midstream margins squeezed to 10% in 2023
21
Consumer spend on diamonds $42B retail 2022
22
Oversupply led to 25% inventory build mid-2023
23
Top 10 miners control 80% production
24
Fancy colored diamonds 1% volume 30% value
25
Recession fears cut demand 5% forecast 2024
Interpretation
Market Economics and Trends Interpretation
The diamond industry is clinging to tradition while being squeezed from all sides, with volatile natural supplies, a soaring lab-grown rebellion, and razor-thin margins exposing just how much glitter is pure markup.
03 · Category
Mining and Production30 stats
01
Global rough diamond production reached 121 million carats in 2022
02
Russia produced 40 million carats of rough diamonds in 2022, accounting for 33% of global supply
03
Botswana mined 24.8 million carats of diamonds in 2022
04
Canada produced 14.6 million carats of rough diamonds in 2022
05
Angola output 8.3 million carats of rough diamonds in 2022
06
South Africa produced 7.7 million carats in 2022
07
Namibia mined 1.9 million carats in 2022
08
Australia produced 13 million carats in 2021 before decline
09
De Beers produced 31.9 million carats in 2022
10
ALROSA produced 35.5 million carats in 2022
11
Rio Tinto's Argyle mine closed in 2020 after producing 800 million carats historically
12
Average rough diamond size from major mines is 0.5-1 carat
13
Artisanal and small-scale mining (ASM) accounts for 20% of global diamond production
14
Diamond mining costs average $100-200 per carat for large producers
15
Global diamond mine inventory stood at 116 million carats in 2022
16
Jwaneng mine in Botswana is the world's richest by value, producing $4 billion annually
17
Udachny mine in Russia produced 14.5 million carats in 2022
18
Catoca mine in Angola produced 7.5 million carats in 2022
19
Diavik mine in Canada output 6.3 million carats in 2022
20
Venetia mine in South Africa produced 3.2 million carats in 2022
21
Rough diamond production declined 2% YoY in 2023 to 116 million carats
22
Large diamonds over 10 carats represent less than 0.1% of production
23
Open-pit mining accounts for 60% of diamond extraction
24
Underground mining costs 2-3x more than open-pit
25
Global diamond reserves estimated at 1.2 billion carats
26
Lesotho produced 600,000 carats in 2022 from Letseng mine
27
Zimbabwe's Marange fields produced 2 million carats annually pre-sanctions
28
Diamond mining employs 10 million people globally, mostly ASM
29
Energy consumption in diamond mining averages 50 GJ per carat
30
Water usage in alluvial mining is 100m³ per carat
Interpretation
Mining and Production Interpretation
Despite Russia currently holding the crown as the top rough diamond miner, the entire industry's glittering facade is propped up by a vast and thirsty global network, from the deep pits of Botswana to the hands of millions of artisanal miners, all chasing increasingly smaller stones while managing staggering environmental costs and geopolitical uncertainties.
More related reading
04 · Category
Sustainability and Ethics24 stats
01
95% of natural diamonds are conflict-free per KP
02
Carbon emissions from diamond mining average 10 kg CO2 per carat
03
Water recycling in mines reaches 80% in best practices
04
De Beers Tracr blockchain traces 100% of its supply by 2023
05
Artisanal mining causes 20% environmental degradation
06
Ethical diamonds certified by RJC: 70% of large producers
07
Mine rehabilitation completed on 60% of closed sites
08
Synthetic diamonds reduce mining impact by 99% energy
09
Biodiversity offset programs protect 1 million hectares
10
Child labor in ASM reduced 50% since 2010
11
Energy from renewables in mines: 30% average
12
Traceability tech covers 40% midstream by 2025 target
13
Russian diamonds banned in G7 markets 2024, impacting 30% supply
14
Fair trade diamonds certified: 5% market share
15
Methane emissions from mines: 5% of total sector
16
Community investment: $200M annually by majors
17
Plastic waste from polishing: 10,000 tons/year reduced 40%
18
KP validated 99.5% compliance in 2022 audits
19
Lab-grown adoption 15% of market displaces mining
20
Gender diversity in mining: 15% women employed
21
Zero tolerance for blood diamonds since 2003 KP
22
Recycled water usage 70% in Botswana mines
23
Carbon neutral goal by 2030 for 50% producers
24
Illegal mining represents 10% of supply
Interpretation
Sustainability and Ethics Interpretation
The diamond industry's conscience is a mosaic of impressive progress and glaring contradictions, where blockchain can trace a gem's flawless journey but cannot yet erase the stubborn stains of environmental harm and human inequity that linger in its supply chain.
05 · Category
Trading and Distribution27 stats
01
Antwerp handles 84% of rough trade by value
02
Mumbai GJE sightings trade $12 billion annually
03
Dubai Multi Commodities Centre (DMCC) traded 10 million carats rough in 2022
04
Hong Kong polished exports $20 billion in 2022
05
Israel diamond bourse turnover $12 billion in 2022
06
RapNet lists 1.5 million polished diamonds daily
07
Global rough diamond trade value $16 billion in 2022
08
India imported $25 billion rough diamonds in FY2023
09
Belgium exported $15 billion polished in 2022
10
China imported 5 million carats rough for trade
11
Sight holder sales by majors: De Beers $4.5B, ALROSA $3.8B
12
Online B2B platforms account for 15% of rough trade
13
Kimberley Process certificates issued: 1.2 million in 2022
14
US imports 40% of global polished diamonds
15
Rough diamond auctions generated $2 billion in 2022
16
Botswana banned rough exports in 2018, trading only polished
17
Antwerp World Diamond Centre sightholders: 2,000 firms
18
E-commerce diamond sales grew 25% YoY to $5B
19
Memorandum of Understanding (MoU) between India-Belgium trades 50% rough
20
Lab-grown rough traded $2.5B in 2022
21
Dubai aims for 20% global trade share by 2030
22
Global diamond trading hubs: 10 major centers
23
Rough trade declined 18% in value 2022 due to prices
24
Jewelry manufacturers buy 95% of polished output
25
Blockchain traced 5% of traded diamonds in 2023
26
98% of rough diamonds are Kimberley certified
27
India exports 90% of polished to 80 countries
Interpretation
Trading and Distribution Interpretation
While traditional powerhouses like Antwerp and Mumbai continue to dominate the diamond trade's physical arteries with billions in polished stones, the entire system is being quietly rewired by digital platforms, ethical mandates, and the sparkling rise of lab-grown alternatives.
Reference
Cite This Report
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APA
Emilia Santos. (2026, February 13). Supply Chain In The Diamond Industry Statistics. Gitnux. https://gitnux.org/supply-chain-in-the-diamond-industry-statistics
MLA
Emilia Santos. "Supply Chain In The Diamond Industry Statistics." Gitnux, 13 Feb 2026, https://gitnux.org/supply-chain-in-the-diamond-industry-statistics.
Chicago
Emilia Santos. 2026. "Supply Chain In The Diamond Industry Statistics." Gitnux. https://gitnux.org/supply-chain-in-the-diamond-industry-statistics.
Sources & references
44 datasets cited across this report · attribution is report-level