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[NEW] " Bello Opal Authentic Statement "
10 things you need to know about "Synthetic Opal"


Opal Cabochon

Sanwa's Bello Opal®: Versatile Opal Cabochons

Bello Opal® Galaxy Collection (Mineral Type Created Opal) is composed by silica & very small portion of water. This opal is made to be compatible with COE 33 (borosilicate glass). It is the mainstream opal for lampworking glass art. It is as known as “Galaxy Opal”, “Created Opal” and “Gilson Opal”. It is available in 14 opal colours, such as fire opal cabochon, black opal cabochon, pink opal cabochon, blue opal cabochon and white opal cabochon.

Sanwa offers opal cabochon from size 1.2mm to 50mm+ and they are available in different kinds of shape, such as round opal cabochon, oval opal cabochon, pearl opal cabochon, marquise opal cabochon, trillion opal cabochon, heart opal cabochon etc. Custom shape is welcomed.

There are two kinds of patterns available, A cut (dot pattern) and B cut (horizontal stripe pattern).

Opal Cabochons - various pattern galaxy - Sanwapearl

PATTERN - Opal Cabochon

There are two types of cabochon patterns: A (dot pattern, right side) and B (stripe pattern, left side).

Opal Cabochons - cablirated opal cabochon - Sanwapearl


All our opal cabochons are produced with high calibration procedures.

Opal Cabochons - assorted galaxy opal - Sanwapearl

VARIOUS SHAPES - Opal Cabochon

Galaxy opal cabochon is available in many different shapes and sizes.

Opal Cabochons - galaxy blue opal - Sanwapearl

POSSIBILITY - Opal Cabochon

Besides cabochon, Galaxy opal is popular in other forms like round bead, tumbled beads, rough etc

Learn More about Opal Cabochon

To inquire, click: https://sanwapearl.com.hk/en/synthetic-opal-inquiry
Properties comparison to natural opal
Category Mineral Type Created Opal Natural Opal
Silica & Water Silica & Water
MOHS Hardness
5.5 3-5.5
Specific Gravity
1.90-2.2 1.98-2.20
Heat Resistance
900 degree C. 100 degree C.
Product Features
Color Range
OP701 to OP714
Size Range
1.2mm to 50mm +
Thickness Range
0.5mm to 18mm
Options for fire pattern
A cut (dot pattern), B cut (horizontal stripe pattern), C cut (Vertical stripe pattern)
Jewelry Plating
Galaxy Opal could work well with jewelry plating
Chemical Resistance
Thinner, Methanol, Acetone
Glass Compatibility
Galaxy Opal is glass compatible
Guarantee on quality
No Cracking, Crazing or Yellowing
Galaxy Opal sheet cannot bend like plastic, it doesn't have elasticity