Diamond CZ

Individual Stones

Round Brilliant: White Cubic Zirconia

Name: Round BrilliantWhite Loose Cubic Zirconia, UK stock
Brand: Diamondcz

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Videos / 20mm Round Brilliant / Round Brilliants Various Sizes

More pictures / Ring set with Round Brilliant cz / 5mm / 2mm round brilliant / 3mm Princess Cut / 4mm / \"Pretty Wild\" bracelet, 12mm cz. / Silver Ring using 5mm cz / 5mm white cz in 925 silver / 8mm Round Brilliant / 20mm Round and 25x15mm Pear / Absolutely Fabulous Ring / colour change cz 1ct / 18 20 32 white cz

The Round Brilliant cut is the most popular of our cuts. They are hand cut when over the size of 5mm. All the round brilliants have 57 facets even the tiny 0.7mm stones which are smaller than grains of sand.

When a round brilliant cut is perfectly cut, it displays a hearts and arrows pattern under a hearts and arrows scope. All of our 6A stones are cut to hearts and arrows standard.

White 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.

The colour white means that the stone is clear, matching a colour D diamond. Colour D is the clearest most colourless possible colour of a diamond.

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 that can be easily told apart 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
0.7mm (0.001ct)	Yes	Yes		£0.11	75 in stock.
0.8mm (0.0025ct)	Yes	Yes		£0.11	593 in stock.
0.9mm (0.003ct)	Yes	Yes		£0.11	307 in stock.
1mm (0.004ct)	Yes	Yes		£0.10	345 in stock.
1.1mm (0.005ct)	Yes	Yes		£0.10	565 in stock.
1.2mm (0.007ct)	Yes	Yes		£0.10	491 in stock.
1.25mm (0.007ct)	Yes	Yes		£0.07	316 in stock.
1.3mm (0.008ct)	Yes	Yes		£0.07	577 in stock.
1.4mm (0.01ct)	Yes	Yes		£0.07	67 in stock.
1.5mm (0.013ct)	Yes	Yes		£0.07	31 in stock.
1.7mm (0.018ct)	Yes	Yes		~~£0.10~~ £0.08	287 in stock.
1.75mm (0.02ct)	Yes	Yes		£0.10	186 in stock.
1.8mm (0.022ct)	Yes	Yes		£0.08	626 in stock.
1.9mm (0.026ct)	Yes	Yes		£0.13	825 in stock.
2mm (0.036ct)	Yes	Yes		£0.10	1613 in stock.
2.25mm (0.041ct)	Yes			£0.11	0 in stock.
2.5mm (0.056ct)	Yes	Yes		~~£0.11~~ £0.06	319 in stock.
2.7mm (0.07ct)	Yes	Yes		~~£0.12~~ £0.10	380 in stock.
2.75mm (0.075ct)	Yes	Yes		£0.13	0 in stock.
3mm (0.097ct)	Yes	Yes		£0.13	282 in stock.
3.25mm (0.124ct)	Yes	Yes		£0.27	0 in stock.
3.4mm (0.15ct)	Yes	Yes		£0.29	40 in stock.
3.5mm (0.154ct)	Yes	Yes		£0.27	50 in stock.
3.75mm (0.19ct)	Yes	Yes		£0.32	5 in stock.
3.8mm (0.2ct)	Yes	Yes		£0.42	27 in stock.
4mm (0.23ct)	Yes	Yes		£0.50	28 in stock.
4.1mm (0.25ct)	Yes	Yes		£0.55	0 in stock.
4.25mm (0.29ct)	Yes	Yes		£0.70	177 in stock.
4.4mm (0.33ct)	Yes	Yes		~~£1.05~~ £0.53	11 in stock.
4.5mm (0.34ct)	Yes	Yes		£0.78	14 in stock.
4.75mm (0.41ct)	Yes	Yes		£0.80	1 in stock.
4.8mm (0.4ct)	Yes	Yes		£0.76	0 in stock.
5mm (0.45ct)	Yes	Yes		£0.84	9 in stock.
5.2mm (0.5ct)	Yes	Yes		£2.21	0 in stock.
5.25mm (0.55ct)	Yes	Yes		£0.38	0 in stock.
5.5mm (0.63ct)	Yes	Yes		£0.75	2 in stock.
5.6mm (0.65ct)	Yes	Yes		£1.11	0 in stock.
5.75mm (0.72ct)	Yes	Yes		£0.49	0 in stock.
5.9mm (0.75ct)	Yes	Yes		£1.27	0 in stock.
6mm (0.78ct)	Yes	Yes		£0.51	0 in stock.
6.2mm (0.85ct)	Yes	No		~~£1.46~~ £1.17	5 in stock.
6.25mm (0.91ct)	Yes	No		£1.44	83 in stock.
6.5mm (1ct)	Yes	No		£1.29	13 in stock.
6.75mm (1.16ct)	Yes	No		~~£0.79~~ £0.71	54 in stock.
7mm (1.25ct)	Yes	No		£0.92	28 in stock.
7.25mm (1.44ct)	Yes	No		£1.92	4 in stock.
7.4mm (1.5ct)	Yes	No		£2.23	0 in stock.
7.5mm (1.59ct)	Yes	No		£1.17	486 in stock.
7.75mm (1.76ct)	Yes	No		~~£2.42~~ £1.94	52 in stock.
7.8mm (1.75ct)	Yes	No		£1.50	0 in stock.
8mm (1.84ct)	Yes	No		£4.29	21 in stock.
8.2mm (2ct)	Yes	No		£4.36	5 in stock.
8.25mm (2.12ct)	Yes	No		~~£2.87~~ £2.58	96 in stock.
8.5mm (2.32ct)	Yes	No		£2.31	39 in stock.
8.6mm (2.25ct)	Yes	No		~~£4.46~~ £3.57	46 in stock.
8.75mm (2.53ct)	Yes	No		~~£3.38~~ £2.70	23 in stock.
9mm (2.76ct)	Yes	No		£3.04	23 in stock.
9.25mm (3ct)	Yes	No		£3.84	0 in stock.
9.3mm (3ct)	Yes	No		£5.70	3 in stock.
9.5mm (3.24ct)	Yes	No		£3.60	5 in stock.
9.75mm (3.5ct)	Yes	No		~~£2.46~~ £1.97	12 in stock.
10mm (3.8ct)	Yes	No		£4.78	0 in stock.
10.2mm (4ct)	Yes	No		~~£2.89~~ £1.73	1 in stock.
10.25mm (4.07ct)	Yes	No		~~£1.83~~ £1.65	60 in stock.
10.5mm (4.38ct)	Yes	No		~~£6.37~~ £5.73	28 in stock.
10.75mm (4.70ct)	Yes	No		£3.27	5 in stock.
11mm (5.03ct)	Yes	No		~~£5.62~~ £3.37	5 in stock.
11.25mm (5.38ct)	Yes	No		£1.87	0 in stock.
11.5mm (5.76ct)	Yes	No		£9.50	0 in stock.
11.75mm (6.13ct)	Yes	No		~~£10.14~~ £8.11	19 in stock.
12mm (6.23ct)	Yes	No		£9.88	0 in stock.
12.4mm (7ct)	Yes	No		~~£18.50~~ £11.10	27 in stock.
13mm (8.3ct)	Yes	No		£4.67	0 in stock.
14mm (10.4ct)	Yes	No		~~£8.80~~ £5.28	4 in stock.
15mm (10.4ct)	Yes	No		£19.67	0 in stock.
16mm (14.8ct)	Yes	No		£17.67	2 in stock.
17mm (18.6ct)	Yes	No		~~£62.62~~ £31.31	2 in stock.
18mm (22ct)	Yes	No		£50.92	1 in stock.
19mm (25.9ct)	Yes	No		£59.22	7 in stock.
20mm (28.8ct)	Yes	No		£18.07	0 in stock.

The equivalent diamond carat sizes are shown in brackets.

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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.