---
product_id: 766214133
title: "Moderock Osmium Metallic Element Periodic Table, Mirror-Finished Density Cube Collection, 99.95% Purity, Weight 21.5g/21.5g (Os Cubic 10mm/0.39 inches)"
brand: "moderock"
price: "NT$94"
currency: TWD
in_stock: false
url: https://www.desertcart.tw/products/766214133-moderock-osmium-metallic-element-periodic-table-mirror-finished-density-cube
store_origin: TW
region: Taiwan
---

# 99.95% pure osmium metal mirror-finish polished cube 21.5g ultra-dense weight Moderock Osmium Metallic Element Periodic Table, Mirror-Finished Density Cube Collection, 99.95% Purity, Weight 21.5g/21.5g (Os Cubic 10mm/0.39 inches)

**Brand:** moderock
**Price:** NT$94
**Availability:** ❌ Out of Stock

## Summary

> 🪙 Own the heaviest, rarest cube in the room—because ordinary metals just won’t cut it.

## Quick Answers

- **What is this?** Moderock Osmium Metallic Element Periodic Table, Mirror-Finished Density Cube Collection, 99.95% Purity, Weight 21.5g/21.5g (Os Cubic 10mm/0.39 inches) by moderock
- **How much does it cost?** NT$94 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.tw](https://www.desertcart.tw/products/766214133-moderock-osmium-metallic-element-periodic-table-mirror-finished-density-cube)

## Best For

- moderock enthusiasts

## Why This Product

- Trusted moderock brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **4th Generation Upgrade:** Enhanced surface quality and density for a premium tactile and visual experience.
- • **Unmatched Density & Purity:** At 21.5g and 99.95% purity, this osmium cube is denser and purer than almost any other metal collectible.
- • **Precision-Crafted 10mm Cube:** Hand-polished and wire-cut for a flawless mirror finish and perfect cubic form.
- • **Rarest Heavy Metal on Earth:** Own a piece of the world’s scarcest platinum-group metal, with annual production under 1 ton.
- • **Exclusive Collector’s Item:** A rare, brittle metal cube that’s impossible to replicate—perfect for professionals who value exclusivity.

## Overview

The Moderock Periodic Table Osmium Cube is a 10mm, 21.5g block of 99.95% pure osmium, one of the rarest and densest platinum-group metals on Earth. Crafted through advanced powder metallurgy and hand-polished to a mirror finish, this 4th generation cube offers unmatched density and exclusivity, making it a coveted collector’s piece for discerning professionals.

## Description

Product description Osmium is a heavy platinum noble metal with a very low content of stable elements in the crust, making it rarer than iridium The annual global production volume is less than 1 ton, making it extremely rare Osmium metal is generally sold in powder form Powder metallurgy for obtaining osmium blocks is very small and melts to bring osmium closer to the theoretical density of osmium mium is even fee less Safety Warning Please handle with care. Do not take this product. Avoid skin and eyes. Keep out of reach of children and pets

## Features

- Osmium metal, precious metal periodic table cubic, osmium cubic, high-purity osmium target, 10 mm, Os ≥ 99.95%, with slight beveling
- The actual density is approximately 20.5 to 21.7 (due to the powder sintering process, it is difficult to process the metal, so it cannot reach the theoretical density) Available only as close as possible At the same time, the parameters may vary slightly depending on each batch of the production process Therefore, there may be a slight variation in density.)
- Osmium is extremely difficult to process, making it hard to form into regular shapes, and grinding and wire cutting are challenging
- Osmium is almost the only metal that remains brittle even near its melting point. It can hardly be heat-treated or deformed under almost any circumstances, leading to exceptionally difficult processing. Therefore, osmium processed products are extremely rare
- Our Osmium target material uses 9995 osmium powder sintered at high temperatures with a density of over 22, processed through wire cutting and grinding, and then hand-polished to achieve a distinctive blue color, impressive texture, and high cost performance On the other hand, the Osmium cube has been upgraded to the 4th generation, with higher density than before, and improved surface quality and mirror effect
- Osmium is a heavy platinum noble metal with a very low content of stable elements in the earth's crust, making it rarer than iridium The annual global production volume is less than 1 ton, making it extremely rare Osmium metal is basically sold in powder form The powder metallurgy for obtaining osmium blocks uses very fine particles, which melt and bring the osmium closer to the theoretical density of osmium mium is even fee less
- Osmium is essentially a highly dense monomer, with a high density of 22.59 g/cm³ and a very high melting point of up to 3045°C. In nature, osmium is sold in the form of osmium, and the density of osmium is extremely high Natural Osmium is usually found in the form of pure metals or alloys, and Osmium is basically a form of by-product and production of copper and nickel mining and purification processes
- Osmium powder has a greyish blue color and osmium clumps have a deep, attractive blue color On the internet, there are claims that the blue color of osmium is due to osmium dioxide, but the owner could not find any evidence to prove that the blue color of osmium is due to osmium dioxide. Instead, the freshly fractured surface of osmium is also blue, and even when cut in an argon environment, it remains blue. Therefore, the owner believes that the blue color is the true color of osmium mium In its dense state, osmium is stable at room temperature. Osmium metal is hard and brittle, easily disintegrating into powder

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Moderock Ltd. |
| Material | Osmium |
| Color | Os |
| Size | 10mm x 10mm x 10mm |
| Material Care Instructions | Wipe with Dry Cloth |
| Brand Name | Moderock |
| Item Weight | 23 g |

## Product Details

- **Brand:** Moderock
- **Product Dimensions:** 10D x 10W x 10H mm
- **Item Weight:** 23 g
- **Frame Material:** Metal
- **Color:** Os

## Images

![Moderock Osmium Metallic Element Periodic Table, Mirror-Finished Density Cube Collection, 99.95% Purity, Weight 21.5g/21.5g (Os Cubic 10mm/0.39 inches) - Image 1](https://m.media-amazon.com/images/I/61k4npJdFhL.jpg)
![Moderock Osmium Metallic Element Periodic Table, Mirror-Finished Density Cube Collection, 99.95% Purity, Weight 21.5g/21.5g (Os Cubic 10mm/0.39 inches) - Image 2](https://m.media-amazon.com/images/I/71zRvpRmqwL.jpg)
![Moderock Osmium Metallic Element Periodic Table, Mirror-Finished Density Cube Collection, 99.95% Purity, Weight 21.5g/21.5g (Os Cubic 10mm/0.39 inches) - Image 3](https://m.media-amazon.com/images/I/612kIuSd7mL.jpg)
![Moderock Osmium Metallic Element Periodic Table, Mirror-Finished Density Cube Collection, 99.95% Purity, Weight 21.5g/21.5g (Os Cubic 10mm/0.39 inches) - Image 4](https://m.media-amazon.com/images/I/71SjqgNOSRL.jpg)
![Moderock Osmium Metallic Element Periodic Table, Mirror-Finished Density Cube Collection, 99.95% Purity, Weight 21.5g/21.5g (Os Cubic 10mm/0.39 inches) - Image 5](https://m.media-amazon.com/images/I/71ZKMFCrAqL.jpg)

## Available Options

This product comes in different **Color** options.

## Frequently Bought Together

- Moderock Osmium Metal Elements Periodic Table, Mirror Finished Density Cubes Collection, Purity 99.95%, Weight 21.5g/0.76Oz (Os Cubic 10mm/0.39")
- The Elements Book: A Visual Encyclopedia of the Periodic Table (DK Our World in Pictures)
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*Product available on Desertcart Taiwan*
*Store origin: TW*
*Last updated: 2026-03-17*