Field report · 561

The studio: how each stone gets graded before listing

Six-step intake process for every parcel before stones reach the catalog.

The Stone Atlas May 7, 2026
The studio: how each stone gets graded before listing

Stones come to the studio in parcels — sometimes a dozen pieces from a single sourcing trip, sometimes hundreds from a long-running relationship. Every parcel goes through the same intake process before anything reaches the catalog. Here's what happens.

Step 1: Unboxing and logging

Each parcel arrives with documentation from the source — supplier invoice, country of origin, declared identity and treatment status. We log every piece by:

  • Date received
  • Source / supplier
  • Quantity
  • Declared identity and origin
  • Declared treatment
  • Initial photograph (record-of-condition)

This intake record stays with the parcel through every subsequent step.

Step 2: Sira's hand-grading

Sira (our studio lead) sorts every piece by hand. She separates:

  • Display-grade — strong color, good clarity, intact surfaces — moves to catalog
  • Working-grade — minor flaws, less-than-ideal cut, but usable — moves to catalog at appropriate price
  • Sub-standard — damage, mis-cut, color issues, treatment inconsistent with supplier's claim — set aside for return or clearance

Sira's grading captures notes that become part of the listing: "slight veiling on the back", "asymmetric polish", "color zoning in the upper third." These notes go into the catalog so buyers see what we see.

Step 3: Lab verification (when relevant)

For stones with natural-origin claims at meaningful price points (above ~$300 retail), we spot-check at the lab. We use:

  • GIA Carlsbad for general colored-stone verification
  • GIT Bangkok for origin verification on stones from Asian sources
  • GRS for high-end stones requiring detailed reports

If a verification doesn't match the supplier's declaration, the parcel goes back. We don't sell against unverified claims.

Step 4: Photography

Daniel photographs every stone individually under controlled north-window light, on a neutral substrate (linen, kraft, or plaster depending on stone color). We shoot multiple angles when relevant — top, side, and bottom for cabochons; front, side, and back for specimens.

Notes about our photography:

  • No filters or color enhancement
  • Same lighting conditions for every photo so colors are comparable across listings
  • Reference rulers for size when not standardized
  • Multiple stones from one parcel may appear in the same shot for comparison

Step 5: Cataloging and copy

Mira writes the listing copy. Every listing includes:

  • Identity, declared and verified
  • Origin, with as much specificity as our supplier could give
  • Treatment status (or "treatment status unconfirmed")
  • Dimensions and weight
  • Notes from Sira's grading
  • Provenance — when, where, from whom

The copy uses plain language. We don't use mystical claims, healing properties, or chakra references. We do use occasionally subjective notes like "deeply saturated" or "hand-cut" when accurate.

Step 6: Pricing and listing

Pricing is based on:

  • Cost basis (what we paid)
  • Reference pricing for similar stones in similar grade
  • Notes from grading (a stone with a back fracture lists below a clean equivalent)
  • Time-on-market expectations

Once listed, each stone is available for 30 days at the initial price. Stones that don't sell after 30 days are reviewed — repriced, moved to clearance, or returned to the supplier (depending on the relationship). We don't accumulate stale inventory.


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