Treatment Transparency

TREATMENTS

You Deserve to Know What You're Buying

THE PROBLEM WITH THE JEWELRY INDUSTRY

When you buy a sapphire ring from most jewelers, they won't tell you if the sapphire has been heat-treated. When you purchase an Emerald, you might not know if it's been oil treated. Even though these treatments are industry standard, most jewelers simply don't disclose them.

That's not wrong. It's just incomplete.

At Bravais Fine Jewelry, we believe you deserve transparency. Every gemstone comes with full treatment disclosure—because when you're investing you should know exactly what you're getting.

WHAT IS TREATMENT TRANSPARENCY?

Treatment transparency means complete, honest disclosure of any processes a gemstone has undergone to enhance its color, clarity, or appearance.

At Bravais, every piece includes:

✓ Heat treatment status (heated or unheated)
✓ Irradiation disclosure
✓ Clarity enhancement details (oiling, etc.)
✓ Provenance information when available
✓ Materials science authentication from Professor Abby

I am happy to provide a formal GIA report/certificate from a Boston Gem Lab for a small fee.

This information is provided with every purchase—no guesswork, no surprises.

COMMON GEMSTONE TREATMENTS

1. HEAT TREATMENT

What it is: Gemstones are heated to high temperatures (typically 1000-1800°C) to improve color or clarity.

Common in:

Sapphires (90-95% of sapphires on the market are heated)
Rubies (98% are heated)
Tanzanite (virtually all tanzanite is heated)
Aquamarine
Tourmaline

Why it's done:

Intensifies color (pale pink sapphire → vibrant pink)
Removes color zoning
Dissolves silk inclusions to improve clarity
Makes stones more marketable

How to tell: Advanced gemological testing (spectroscopy, microscopy). As a Materials Science professor, I can identify heat treatment indicators in many cases without expensive certification.

Value impact:

Unheated sapphire: Worth 2-5x more than heated equivalent
Unheated ruby: Premium pricing, highly sought after
Unheated Paraiba: Significantly more valuable

Bravais approach: We carry both heated and unheated stones. We S disclose which is which, so you can make an informed decision based on your budget and preferences.

2. IRRADIATION

What it is: Gemstones are exposed to radiation (gamma rays, electron beams, neutron bombardment) to alter their color.

Common in:

Blue topaz (virtually all blue topaz is irradiated)
Some diamonds (to create fancy colors)
Some tourmalines
Some kunzite
Some pearls

Why it's done:

Creates vibrant blue in colorless topaz
Enhances color in otherwise pale stones
Creates fancy color diamonds at lower cost

Safety: Properly treated stones are safe to wear. Radiation dissipates during treatment and is not retained in the stone.

Value impact:

Irradiated stones are worth significantly less than natural color equivalents
Should be disclosed for resale value accuracy

Bravais approach: We disclose all irradiation. If a stone is irradiated, you'll know before you purchase.

3. CLARITY ENHANCEMENT

What it is: Treatments to improve a stone's clarity by filling fractures or removing inclusions.

Types:

Fracture Filling (Glass Filling):

Liquid glass or resin injected into surface-reaching fractures
Makes fractures less visible
Common in rubies ("glass-filled ruby")
Can be unstable (filling may leak or change color)

Oiling:

Natural oils (like cedar oil) applied to emeralds to fill surface-reaching fractures
Makes fractures less visible, improves transparency
Standard practice for emeralds (95%+ are oiled)
Can dry out over time, requires re-oiling

Laser Drilling:

Tiny laser holes drilled to remove dark inclusions
Common in diamonds
Permanent treatment
Can affect durability

Value impact:

Heavily treated stones worth significantly less
Minor oiling in emeralds is accepted (standard practice)
Fracture-filled rubies worth 10-20% of unfilled equivalents

Bravais approach: We specify the type and extent of clarity enhancement. "Minor oil" for emeralds is disclosed. Heavily treated stones are avoided or clearly marked with significant price reduction.

4. DIFFUSION

What it is: Surface treatment where color-causing elements are diffused into the stone's surface layer via high heat.

Common in:

Sapphires (beryllium diffusion for "padparadscha" color)
Some rubies
Star sapphires/rubies (to create asterism)

Why it matters:

Color is only surface-deep (if re-cut, color is lost)
Value is dramatically lower than natural color
Should ALWAYS be disclosed

Value impact:

Diffusion-treated stones worth 5-10% of natural color equivalents
Considered "permanent" but vulnerable to re-cutting

Bravais approach: We avoid diffusion-treated stones. If ever carried, full disclosure would be provided.

5. DYEING & COATING

What it is: Surface application of dye or colored coating to enhance color.

Common in:

Jade (dyed green)
Coral (dyed red)
Lapis lazuli (dyed blue)
Some pearls (dyed black)
Some diamonds (coated to mask color)

Why it matters:

Can wear off over time
Can be damaged by cleaning or wear
Significantly reduces value

Value impact:

Dyed stones worth 10-30% of natural color equivalents

Bravais approach: We avoid dyed/coated stones for fine jewelry. Any dyed material would be clearly disclosed.

WHY DOESN'T EVERYONE DISCLOSE TREATMENTS?

It's Not Required

The jewelry industry has no legal requirement to disclose treatments in most cases. Only if a treatment is unstable or requires special care is disclosure mandated.

It's Industry Standard

90%+ of sapphires are heated. 98%+ of rubies are heated. Since "everyone does it," many jewelers consider disclosure unnecessary.

Pricing Complexity

Disclosing treatments means explaining price differences—why an unheated sapphire costs 3x more than a heated one. Many jewelers avoid this conversation.

Certification Costs

Getting formal gemological certification (like GIA reports) costs additional money per stone. Many jewelers skip this to save costs, which means no documentation of treatment status. I am happy to provide you with one if it is not already included with the stone for a small fee to cover the cost of the report from a local Boston gem lab.

THE BRAVAIS DIFFERENCE: MATERIALS SCIENCE EXPERTISE

As a Chemical Engineering & Materials Science professor at Northeastern University, I understand gemstones at the atomic level. I know:

🔬 What happens during heat treatment (corundum atomic structure reorganization at 1800°C)
🔬 How to identify treatment indicators (spectroscopy, inclusion analysis, color distribution)
🔬 The crystallography of inclusions (silk, rutile needles, growth patterns)
🔬 Material stability and durability (which treatments are permanent vs. temporary)

This expertise means:

I understand treatment processes at a technical level
I can explain WHY treatments affect value to you
I source stones with full knowledge of their treatment history

You're not just buying jewelry—you're buying materials science expertise.

HOW TO READ BRAVAIS TREATMENT DISCLOSURE

Every Bravais piece includes a card with complete gemstone documentation:

Example 1: Montana Sapphire Ring

Stone: 1.45ct Montana Sapphire
Color: Teal
Cut: Oval (7.89 x 6.12 x 4.23mm)
Origin: Missouri River, Montana, USA
Treatment: HEATED
Clarity: Eye-clean with minor silk inclusions (10x magnification)
Provenance: Ethically sourced from Montana sapphire mine, American ethical premium

Why heated? This stone was heated to intensify its teal color. Heating is permanent and stable. An unheated Montana teal of this quality would cost 2-3x more.

Example 2: Paraiba Tourmaline Pendant

Stone: 2.82ct Paraiba Tourmaline
Color: Bright teal
Cut: Cushion (9.01 x 7.93 x 5.23mm)
Origin: Mozambique
Treatment: NONE (Natural, unheated, untreated)
Clarity: Eye-clean with minor inclusions visible under 10x magnification
Certification: IGI Report showing copper bearing XPS data
Provenance: Mozambique Paraiba, increasingly rare due to demand

Why untreated? This natural teal color commands premium pricing. Unheated Paraiba tourmalines are highly sought after by collectors.

Example 3: Emerald Bombe Ring

Stone: 2.67ct Emerald
Color: Vivid green
Cut: Emerald-cut (9.23 x 7.12 x 5.45mm)
Origin: Colombia (Muzo mines)
Treatment: MINOR OIL (standard practice for emeralds)
Clarity: Eye-clean with typical emerald inclusions ("jardin")
Provenance: Colombian Muzo emerald, pre-carved into bombe blank

About oiling: 95%+ of emeralds are oiled to improve transparency and reduce visibility of surface-reaching fractures. This is considered acceptable and standard in the industry. Oil may require refreshing over time (I offer free re-oiling for life).

QUESTIONS TO ASK OTHER JEWELERS

If you're shopping elsewhere, ask these questions to ensure you're getting full disclosure:

"Is this stone heated or unheated?"
- If they say "I don't know," that's a red flag
- If they say "it doesn't matter," that's misleading (it affects value)
"Has this stone been irradiated or diffusion-treated?"
- Especially important for blue topaz, fancy color diamonds, padparadscha sapphires
"Is this emerald oiled, and if so, to what extent?"
- Minor oiling is acceptable; heavy oiling or fracture filling should reduce price significantly
"Can I see a gemological certificate or treatment disclosure?"
- GIA, IGI, or other reputable lab reports should list treatments
"If this stone is unheated, can you provide documentation?"
- Unheated stones command premium prices; documentation ensures authenticity

If the jeweler can't or won't answer these questions, walk away.

TREATMENT TRANSPARENCY = INFORMED DECISIONS

We're not saying treatments are bad. Heat treatment is permanent, stable, and widely accepted. Irradiation creates beautiful colors. Minor oiling preserves emerald beauty.

But you should KNOW.

The choice is yours. The information is ours to provide. Treatments are not inherently bad - if a stone speaks to you that is the most important thing to me. You should be informed about your purchase.