---
product_id: 158363804
title: "Optima GemOptimaGem Lab Helenite Grass Green Round 4mm-12mm Loose Gemstones (5mm)"
brand: "optima gem"
price: "¥5061"
currency: JPY
in_stock: true
category: "Home"
url: https://www.desertcart.jp/products/158363804-optima-gemoptimagem-lab-helenite-grass-green-round-4mm-12mm-loose
store_origin: JP
region: Japan
---

# Optima GemOptimaGem Lab Helenite Grass Green Round 4mm-12mm Loose Gemstones (5mm)

**Brand:** optima gem
**Price:** ¥5061
**Availability:** ✅ In Stock

## Quick Answers

- **What is this?** Optima GemOptimaGem Lab Helenite Grass Green Round 4mm-12mm Loose Gemstones (5mm) by optima gem
- **How much does it cost?** ¥5061 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/158363804-optima-gemoptimagem-lab-helenite-grass-green-round-4mm-12mm-loose)

## Best For

- optima gem enthusiasts

## Why This Product

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

## Description

Size:5mm




























beautiful material created using the volcanic ash from the eruption of Mt. St. Helens. Helenite is an abandoned trademark name and all Helenite is created by man and there is no equivalent natural counterpart. The closest natural materials are Obsidian and Volcanic Glass which are commonly black in color. The material used for our gems is no longer produced and therefore implies some rarity, but it should be noted that similar material can be reproduced at any time. Our gems are calibrated for easy design for the artist and use in standard settings by the jeweler, goldsmith or silversmith.

## Features

- All genuine Optima Gem products come with our certificate of quality and authenticity upon request.
- Fine Cut = Precision cut or visually imitates a precision cut. These stones have equal and symmetrical faceting with proper cutting angles ("critical angle') and depth. Depth is between 60% and 70% of size listed. Size can vary +-0.1mm.
- AAA = eye clean, any inclusions will not be visible to the eye. Smaller sizes will have progressively less color saturation than photo (7mm).
- Optima Gem is a US based small business that has provided honest, accurately graded gemstones for over 25 years. Satisfaction Guaranteed. Click Optima Gem above to see our limited  offerings.
- Need more quantity? Just ask. We limit availibility to prevent being oversold. Free matching on all orders Shipped by Optima Gem.

## Images

![Optima GemOptimaGem Lab Helenite Grass Green Round 4mm-12mm Loose Gemstones (5mm) - Image 1](https://m.media-amazon.com/images/I/41mqhLWWoqL.jpg)
![Optima GemOptimaGem Lab Helenite Grass Green Round 4mm-12mm Loose Gemstones (5mm) - Image 2](https://m.media-amazon.com/images/I/51qq3noYMGL.jpg)
![Optima GemOptimaGem Lab Helenite Grass Green Round 4mm-12mm Loose Gemstones (5mm) - Image 3](https://m.media-amazon.com/images/I/41qtYnFgNxL._SL500_.jpg)

## Available Options

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

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**Shop now:** [https://www.desertcart.jp/products/158363804-optima-gemoptimagem-lab-helenite-grass-green-round-4mm-12mm-loose](https://www.desertcart.jp/products/158363804-optima-gemoptimagem-lab-helenite-grass-green-round-4mm-12mm-loose)

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-03-17*