Los propietarios nos traen piedras que quieren vender. Inspeccionamos cada una, la contrastamos con su informe de laboratorio y publicamos las que se sostienen. La piedra permanece con su dueño hasta que la venta se cierra.
(Fig. 01)La norma4 reglas, aplicadas a cada anuncio
Lo que una piedra debe cumplir antes de aparecer aquí.
No son promesas de calidad. Son las condiciones para ser inscrita, y son iguales para un comerciante y para un particular.
S-01
A laboratory report or nothing
Every stone in the register carries a report from an independent laboratory, named on the listing with its report number. A stone without one does not go up, whatever it is and whoever is offering it.
No report, no listing
S-02
Seen in person
A gemologist examines the stone and checks that the weight, measurements and description match the report. Photographs and inclusion images on the listing are ours, taken at that inspection.
Our images, not the seller’s
S-03
We are paid by the seller
On a register stone we act for the owner and are paid a percentage of the sale price when it completes. We say so on every listing. If you want someone working for you instead, that is the sourcing service, and you pay us.
Stated on every listing
S-04
We never hold the stone
The owner keeps it until the sale completes. We arrange viewing, the transfer and the paperwork. We never take title, and we never quote you a valuation for a stone we are selling.
Owner holds · we broker
(Fig. 02)Las piedras3 inscritas
Stones that are already cut, already tested, already for sale.
Dealers, cutters and private owners bring us stones they want to sell. We inspect them, we check the laboratory report, and we publish the ones that hold up. The stone stays with its owner. You deal with us.
ER-L-0001Available
Ruby3.02 ct
Sin imagenSin imagenSin imagen
Forma
Cushion
Color
Red
Tratamiento
No indication of heating
Origen
Mogok, Myanmar
Dimensiones
8.91 x 7.72 x 5.10 mm
Custodiada en
Bangkok
InformeGRS/GRS2026-0411882026-04-18
An unheated Mogok ruby with the open red the deposit is known for. The report carries no indication of heating, which is the whole of its value here. Eye clean at arm's length, with a fine silk visible under the loupe.
Ofrecida por su propietario. Erebaur actúa para el vendedor y cobra una comisión al cierre.
ER-L-0002Available
Padparadscha sapphire5.41 ct
Sin imagenSin imagenSin imagen
Forma
Oval
Color
Pinkish orange
Tratamiento
No indication of heating
Origen
Sri Lanka
Dimensiones
11.62 x 9.08 x 6.34 mm
Custodiada en
Geneva
InformeSSEF/SSEF-1288442026-02-27
A padparadscha large enough to be difficult to replace. SSEF words the colour as pinkish orange and states no indication of heating. Stones at this weight that hold the colour across the whole face surface a few times a year.
Ofrecida por su propietario. Erebaur actúa para el vendedor y cobra una comisión al cierre.
ER-L-0003Reserved
Paraiba tourmaline2.18 ct
Sin imagenSin imagenSin imagen
Forma
Emerald cut
Color
Blue to green
Tratamiento
Indications of heating
Origen
Mozambique
Dimensiones
8.44 x 6.11 x 4.62 mm
Custodiada en
Bangkok
InformeGIA/GIA-22658844172026-06-09
Mozambique Paraiba with the copper blue that gives the variety its name. The report states indications of heating, which is usual for the material and is priced accordingly. Reserved pending completion.
Ofrecida por su propietario. Erebaur actúa para el vendedor y cobra una comisión al cierre.
(Fig. 03)Comprar4 etapas
Cómo pasa una piedra de esta página a usted.
Trata con nosotros de principio a fin. El propietario conserva la piedra hasta el cierre, y nada se mueve antes de que la documentación esté resuelta.
Etapa 1 de 4Any time
Find it
Browse the register by species, weight, origin or treatment. Every listing shows the laboratory, the report number and what the report actually says.
Usted recibeListing with full report detail
Etapa 2 de 4Same day
Ask
You contact us about a reference. We tell you what we know, including anything the report qualifies, and what the owner will and will not do on price.
Usted recibeWritten answer and the report itself
Etapa 3 de 4By arrangement
See it
Viewing with the owner or at a neutral place, or a second opinion from a laboratory of your choosing at your cost. We do not ask you to buy a stone you have not examined.
Usted recibeViewing, or a second lab report
Etapa 4 de 4On agreement
Complete
Payment, transfer of title, insured shipping and customs. The stone reaches you with its report, its trade documents and the record of every hand it passed through.
Usted recibeStone, report, chain of custody
(Fig. 04)Vender4 etapas
Cómo inscribir una piedra en el registro.
Envíe primero el informe. Si la piedra cumple la norma, la inspeccionamos, la fotografiamos nosotros y la inscribimos. Usted la conserva todo el tiempo.
Etapa 1 de 4Week 0
Submit
Tell us the stone: species, weight, shape, treatment, origin, the laboratory report you hold, and the price you want. No obligation, and no fee to submit.
Usted recibeA yes or a no, in writing
Etapa 2 de 4Days
Assessment
We examine the stone and the report. We turn down stones whose report is thin, whose description does not match, or where the paperwork will not survive a buyer’s questions.
Usted recibeOur assessment, and our reasons
Etapa 3 de 4On acceptance
Publication
We photograph the stone, write the listing and publish it in eight languages. You keep the stone. You can withdraw it at any time before a sale is agreed.
Usted recibeA live listing, and your reference
Etapa 4 de 4On completion
Sale
We handle the enquiries, the viewing and the transfer, and take our percentage when the money clears. Nothing is owed if the stone does not sell.
Usted recibeProceeds, less the agreed percentage
(Fig. 05)CondicionesComisión, pagada por el vendedor
Quién nos paga, y cuánto.
En una piedra del registro actuamos para el propietario, no para el comprador. Lo decimos en cada anuncio, porque un comprador tiene derecho a saber de qué lado estamos antes de escribirnos.
What it costs the seller
A percentage of the sale price, on the scale below, agreed in writing before the stone is published and stated on the listing. Nothing to submit, nothing to publish, nothing if it does not sell.
What it costs the buyer
Nothing to us. Our fee comes from the seller. Your costs are the stone, any second laboratory opinion you commission, shipping, duty and tax.
What we will not do
We do not value the stones in the register, we do not forecast what any stone will be worth later, and we do not give investment advice. A price on a listing is the owner’s asking price, not our opinion of what it is worth.
Withdrawal
An owner may withdraw a stone at any time before a sale is agreed. We may remove a listing at any time, including if anything about the stone or its papers stops adding up.
Comisión sobre el precio de venta cerrado
Up to USD 25,000
15%
USD 25,000 to 250,000
10%
Above USD 250,000
7.5%
(Fig. 06)Preguntas6 respuestas
Antes de hacer el encargo.
Las preguntas que más hacen los clientes. Lo demás va en el campo «notas» del encargo.
P-01Do you own any of these stones?
No. Every stone belongs to the person offering it and stays with them until a sale completes. We publish, we broker, and we are paid by the owner.
P-02Then whose side are you on?
On a register stone, the seller’s. That is what being paid by the seller means, and it is why we say it on every listing. If you want us working for you, brief us instead and we will go and find a stone to your requirements.
P-03Why should I trust the report?
Because it is not ours. Every listing names the laboratory and the report number so you can check it against that laboratory’s own verification service. You are welcome to send the stone to a laboratory of your choosing before you buy.
P-04Can I see the stone before buying?
Yes, and we would rather you did. Viewing is arranged with the owner or at a neutral place.
P-05What does the price on a listing mean?
It is what the owner is asking. It is not a valuation and not our view of the stone’s worth. Some owners publish a price, others ask that enquiries come first.
P-06What happens if a report turns out to be wrong?
The sale does not complete. If a stone is already sold and a laboratory later contradicts the report it was sold on, we put the buyer and the seller back where they started and take nothing.
(Fig. 07)Contacto
¿Tiene una piedra, o quiere una de estas?
Escríbanos con la referencia o el informe. Respondemos en ambos casos.