Vajra-Crest operates as a neutral data vault. We surface only the verified physics markers to buyers — Nitrogen [N] in ppb, Raman FWHM at 1332 cm⁻¹, thermal conductivity in W/m·K, and surface roughness Ra. Your reactor recipes, plasma chemistry, substrate seed strategy, and proprietary growth parameters never enter the marketplace layer.

Every supplier row in the Discovery Index is masked behind a Verified Source ID (e.g. V-3842) generated from a deterministic FNV-1a hash. Buyers see only the Source ID until a signed NDA and a confirmed transaction trigger disclosure to procurement. Even then, disclosure is bilateral and logged — the marketplace remains blind.

Raw spectroscopic traces captured during the Vajra-Sāra™ audit live in a private evidence vault inside the Partner Portal, accessible only via RLS-scoped Supabase sessions. Downloads are authenticated, signed URLs expire within minutes, and your data is never used to train any model or benchmark against competitors.

Uncertified CVD diamond lots trade at a heavy discount because buyers price in post-ship variance risk. They cannot independently verify nitrogen, FWHM, or thermal conductivity before funds move — so they discount the lot to cover the probability of a failed spec match.

The Vajra-Sāra™ certificate closes that gap. Buyers pay certified-premium pricing for pre-verified physics because the variance risk is gone. We've observed settlement at up to 2.4× the uncertified floor for Quantum-grade lots, with Optical and Thermal tiers commanding proportional premiums.

The impact is strongest on the industrial fringe. High-Thermal Reject lots — wide FWHM, elevated nitrogen, but excellent thermal conductivity — historically discarded as scrap, now enter the Industrial category of the Discovery Index and command heat-spreader and GaN-on-diamond pricing for SiC thermal-management, EV power electronics, and defense MMIC packaging.

Optical microscopy reveals surface topology. Real lattice quality lives in two places standard inspection cannot see:

• Lattice strain · Raman FWHM. We measure the diamond phonon peak at 1332 cm⁻¹. A FWHM broader than 2.0 cm⁻¹ signals internal stress that causes thermal-shock fracture during device operation — even when the surface appears flawless. Quantum-grade lots demand FWHM < 1.6 cm⁻¹.
• Point defects · PL mapping. Nitrogen-vacancy centres fluoresce at 637 nm. Spatial photoluminescence mapping exposes doping inhomogeneity invisible to the eye — critical for quantum sensors where NV density must be uniform across the active area.

Every Vajra-Sāra™ lot also passes SIMS depth profiling (isotopic purity + nitrogen vs depth), LFA thermal diffusivity (ASTM E1461), and AFM surface profiling for sub-nm Ra. The combined evidence pack ships with every dossier.

The Vajra Inference Score is a mathematical confidence interval — a 0-100 integer — that matches every supplier-claimed property against the spectroscopic DNA measured by the independent lab.

For each metric (Nitrogen, Raman FWHM, Thermal k, Surface Ra) we:

• Compute variance = |verified − claimed| / claimed.
• Normalize against a per-metric tolerance band — Nitrogen ±15%, FWHM ±5%, Thermal k ±5%, Ra ±25%.
• Inside tolerance → metric scores 100.
• Beyond tolerance → score decays linearly to zero at 3× tolerance.

The overall score is the arithmetic mean across metrics, with a credibility cap: any single metric below 40 clamps the lot to max 45. So one hard bust can't be averaged away.

Interpretation: 85 – 100 = audit passed and dossier cleared; 60 – 84 = conditional, review required; below 60 = audit failed, dossier not issued, lot flagged publicly on the Discovery Index to preserve marketplace integrity.

The Vajra-Sāra™ dossier is a shared digital asset anchored in the Vajra-Crest Partner Portal. Three parties hold co-access, each with a different role in the chain of custody:

• The lab. Immutable sign-off on methodology and raw spectroscopic traces. The lab retains intellectual property over the CSV-level data — it's linked to the dossier, not transferred.
• Vajra-Crest. Marketplace and merchandising rights. We integrate the dossier into the Discovery Index, generate the Material Passport, and issue the Source ID.
• The authorized buyer of record (post-procurement). Chain-of-custody proof. Access flows once the lot settles, allowing the buyer to audit-match at any point in the device lifecycle.

No single party can alter the report unilaterally. All revisions require co-signature via the portal's append-only evidence log. Every download is authenticated against the viewer's session. The raw CSV traces stay behind a signed-URL layer that expires in minutes, preserving the lab's IP even as the audit stays verifiable by everyone who needs to see it.