---
title: "Assembled stone: meaning in gemology"
description: "An assembled stone is made of two or more pieces joined together, usually with glue or by fusing. A doublet has two parts; a triplet has three, or two parts…"
url: https://digitalgemology.com/learn/glossary/assembled-stone
image: https://digitalgemology.com/img/og-digital-gemology.png?v=d224fb01
---

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[Glossary](https://digitalgemology.com/learn/glossary) · Treatments and origin

# Assembled stone

Also called doublet, triplet, composite stone

An assembled stone is made of two or more pieces joined together, usually with glue or by fusing. A doublet has two parts; a triplet has three, or two parts with a colored layer between them.

## In more detail

The pieces can be natural or man-made. Many assembled stones imitate a more valuable gem.

## Related terms

- [Simulant](https://digitalgemology.com/learn/glossary/simulant): A simulant is a material that looks like a gem but has a different chemistry, structure and properties. Cubic zirconia, moissanite and glass are diamond simulants.
- [Manufactured product](https://digitalgemology.com/learn/glossary/manufactured-product): A manufactured product is a gem held together by glass or resin. It is made from badly fractured rough, or from many small pieces bound into one.
- [Synthetic gemstone](https://digitalgemology.com/learn/glossary/synthetic-gemstone): A synthetic gemstone is made in a laboratory and has essentially the same chemistry and properties as the natural gem. A synthetic ruby is ruby, made by people.
- [Disclosure](https://digitalgemology.com/learn/glossary/disclosure): Disclosure is telling the buyer, before the sale, that a gem is treated, laboratory-grown or an imitation.

[All 328 terms](https://digitalgemology.com/learn/glossary)