B
Evidence Grade B
Graded
accuracy verified by the review judge
Safe to Cite
Aging
18%
18% -- consumers trusting current certification systems for millennial luxury buyers (2024)
Only 18% of millennial luxury buyers believe current certification systems provide verification that stones are ethically sourced.
Attribution:
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Lighthouse Research Team
Last verified:
·
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Source verified
Evidence graded
Value
18%
Unit
Percentage
Data Vintage
2024
Entity
Geography
EMEA
Evidence Quality
B
Strong, reliable evidence
Sourced from a well-regarded research firm or industry leader with transparent methodology and a reasonably large sample.
Single source - not yet corroborated
Score breakdown
Extraction
50
Source Trust
60
Citation Chain
20
Independence
30
Methodology
45
Freshness
95
Source
McKinsey
Primary
Tier C
https://diamondstack.co.za/2026/03/25/why-the-kimberley-process-failed-and-what-blockchain-provenanc… ↗
Source Article
Why the Kimberley Process Failed — And What Blockchain Provenance Fixes That It Couldn't -
Why the Kimberley Process Failed — And What Blockchain Provenance Fixes That It Couldn’t
The Kimberley Process Certification Scheme (KPCS) was supposed to end blood diamonds. Launched in 2003 with the backing of 59 governments, the diamond industry, and civil society, it promised a world where every…
Original Research
McKinsey
· Original study ↗
Methodology
Cited from McKinsey 2024 Global Diamond Report
Methodology documented
Segmentation
IndustryRetail
RegionEMEA
Cite this stat
Plain Text
millennial luxury buyers: 18% consumers trusting current certification systems. Source: McKinsey (2024). Via Lighthouse Intelligence -- https://lighthousedata.io/data/consumers-trust-current-diamond-certification
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<blockquote cite="https://lighthousedata.io/data/consumers-trust-current-diamond-certification" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>18%</strong> -- consumers trusting current certification systems for millennial luxury buyers<br><small>Source: McKinsey (2024) · <a href="https://lighthousedata.io/data/consumers-trust-current-diamond-certification" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>
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