+7 916 456 456 3
MONO is an independent expert service specializing in precious stones. We help our clients find the right stone, understand its characteristics, compare options, and make a considered decision about their purchase.

We are not here to sell you the most expensive option. Our goal is to find a solution that matches your needs, budget, and what truly matters to you.

What matters to us is that you understand exactly what you are choosing, why the stone is right for you, and what you are paying for.
With care,
Your MONO Maison Team
What can we help you with?
  • I need help finding the right stone
    We’ll help you define your requirements and select suitable options. We work with both natural and laboratory-grown stones and can advise you on the right cut.
  • I’ve already found a stone and want to have it checked
    We’ll review its characteristics, documentation, and key parameters before you make a purchase.
  • I want to understand the value of the stone I’ve chosen
    We’ll provide a professional gemological assessment and help you understand what determines the stone’s value.
  • I’m choosing a piece of jewellery
    We’ll help you assess both the stone and the jewellery itself from a professional perspective.
What Types of Stones Do We Work With?
If you’re unsure or haven’t found the answer you’re looking for, simply leave a consultation request.
  • Natural Stones
    A stone of natural origin, formed deep within the Earth under extreme temperatures and pressure over millions, and sometimes billions, of years. Once mined, a natural diamond is cut and polished, transforming it into a brilliant gemstone with its characteristic brilliance and play of light.
  • Laboratory-Grown Stones
    A real diamond with the same chemical composition, crystal structure, and optical properties as a natural diamond, but created by humans under controlled conditions using HPHT (High Pressure High Temperature) or CVD (Chemical Vapor Deposition) technology.
Why MONO
Our priority is simple: to make every client feel confident and cared for.
An Independent Perspective
We help you make an informed decision, rather than simply choose from a selection of options.
Professional Expertise
We look beyond the stone’s visual appeal, taking into account its gemological characteristics, documentation, and individual features.
Transparency at Every Step
Service fees and any applicable commissions are discussed and agreed upon in advance. No unexpected charges throughout the process.
Only the Right Options
We don’t aim to show you as many stones as possible.
Our goal is to carefully select those that truly match your requirements.
Personal Guidance
We stay by your side throughout the entire process — from our first conversation to the moment you make your decision.
Our Services
You are always welcome to reach out with any question. We will be happy to advise you
Gemstone Acquisition

Finding the Right Stone

We help you find a stone that suits your specific needs, budget, and preferences. We identify the key characteristics, find suitable options, compare them, and help you make an informed decision.

What’s included:

— Defining your requirements

— Sourcing suitable options

— Analysing characteristics and comparing stones

— Reviewing documentation

— Guidance throughout the purchase process

Stone Verification Before Purchase

Have you already found a stone yourself?

Before you make a purchase, we help you understand whether the stone matches its stated characteristics and whether its price is justified.

For those who have already received an offer from a seller and want an independent professional opinion before proceeding with the transaction.

Gemological Assessment

A professional assessment of a gemstone’s characteristics and condition.

We help you understand the stone’s documentation, characteristics, and individual features.

Get in Touch
We are here to help with your questions about gemstones and to find the options that are right for you.
Phone
By clicking the button, you consent to the processing of your personal data and agree to our Privacy Policy.

+7 916 456 456 3
clients@mono.maison
Moscow