Diamond CZ

Individual Stones

Lab Green Sapphire: Opaque Oval Step Lab Green Sapphire

Name: Lab Green Sapphire Opaque Oval Step Loose Lab Green Sapphire, UK stock
Brand: Diamondcz

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These are Opaque Green to give a natural emerald look.

Lab-Created Green Sapphire (Flux Fusion Method)

Lab-created green sapphire produced by the flux fusion method is a synthetic form of corundum grown by slowly crystallising aluminium oxide from a molten flux, closely replicating the conditions under which some natural sapphires form. This process produces high-quality gemstones with excellent clarity, durability and natural-looking crystal growth features.

The finished gemstone has the same chemical, physical and optical properties as natural green sapphire. Its green colour is created by adding trace amounts of colouring elements during growth, while the flux acts only as a solvent and is not part of the finished crystal.

Specifications

Chemical composition: Aluminium Oxide (Al?O?)
Crystal system: Trigonal (Corundum)
Growth method: Flux Fusion
Colouring elements: Primarily Iron (Fe) and Titanium (Ti), with occasional trace amounts of Nickel (Ni) or Vanadium (V)
Hardness: 9 on the Mohs scale
Refractive Index: 1.762–1.770
Specific Gravity: 3.99–4.01

Opaque Green Colour Description

We try to match the colour of the photos as close as possible with the colour of the gemstone, but like natural stones cz varies slightly in colour within the material and depth of colour varies with the size of the stone. Colour descriptions vary online and screen colour settings vary, so it is impossible to be spot on with the colour.

If you have photos or videos of this stone, or artwork or jewellery you have made using this stone, you can upload them below. The link includes the option to advertise your website if you have a website that sells jewellery with our stones in it.

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Why Buy from DiamondCZ?

1. Cubic Zirconia is the best diamond simulant

Despite the hype around moissanite, Cubic Zirconia remains the most realistic diamond simulant to the naked eye. Its refractive index and dispersion are closer to diamond in appearance, resulting in a more natural sparkle. Moissanite, while often marketed as a superior alternative, sparkles too intensely and shows rainbow flashes that give it away.

	Diamond	Cubic Zirconia (Closer Match)	Moissanite
Refractive Index	~2.42	~2.15 – 2.18	~2.65 – 2.69
Dispersion (Fire)	0.044	0.060	0.104

2. Quality You Can Trust

Cubic zirconia is often misrepresented. Sellers may label 1A as 3A, or send a few good 6A samples but deliver lower-quality stones in the final order. Others mix poor-quality stones in larger packs without disclosing it.

3. 20 Years of Sourcing Gemstones

DiamondCZ has partnered with expert gem cutters for over 20 years to deliver true 6A, 5A, and 3A stones. With low overheads you’re paying mostly for the gemstone.

Small amounts of gems will be packaged together. If you would like to have them packed seperately there are options in the basket

Size Move mouse over size for picture	Kiln Tested ℹ A gem of this size, type, and colour has been tested by the manufacturer and generally withstands kiln temperatures up to 1100°C (2012°F) without cracking or colour change. However, rare natural imperfections, such as undetectable air bubbles, may affect results. This information is for guidance only and is not a guarantee. Test firing is recommended before use in final pieces.	B.Torch Tested ℹ A gem of this size, type and colour has been tested with a kitchen blow torch for 1 minute continuously in the hottest part of the flame and did not crack or change colour. This is for guidance only and is not a guarantee due to different blow torches and applications	Enter Quantity	Price Per Gem	In Stock
11x8mm (3.9ct)	No	No		£52.87	35 in stock.

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Discounts
When a stone is unsold for a long time it is automatically discounted. The longer it is unsold the higher the discount, the levels of discount from lowest to highest are: Green Blue Purple Orange Gold Once a discounted stone is purchased the discount is reset.
Random Special Offer

A gemstone is chosen completely at random for a special 60% discount. Because this offer is temporary, the discounted item and its price may change when prices are updated. If the offer ends before checkout, the basket will update to the current live price.