Opal 7.20 x 5.20 mm | Oval | Welo, Ethiopia
Calibrated 7 × 5 mm opal with a crystal-clear, semi-transparent body and a vibrant play of color. Average weight ~0.55 ct per stone. Sold per single stone (photos may show multiple opals to illustrate average quality). Ideal for rings, earrings, or fine accent designs.
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Description
These calibrated 7 × 5 mm opals feature a crystal-clear to semi-transparent body that gives the gemstone exceptional depth and a refined, luminous look. The transparency allows the color to appear layered within the stone, creating a captivating “floating” effect as the opal moves in the light.
Each opal displays a beautiful play of color, with vivid flashes that can shift depending on viewing angle and lighting. With an average weight of approximately 0.55 ct per stone, these opals offer an excellent balance of presence and wearable elegance. Thanks to the calibrated size, they are especially suited for professional jewelry work—perfect for settings where clean proportions and consistent fit matter.
Please note: the price is per single opal. Product photos may show multiple stones together to demonstrate the typical/average quality and overall look of the parcel. You may purchase one stone or multiple stones, depending on your project needs.
Additional Information

Every gemstone purchased from Gem Fountain includes a free Gem Fountain Gemstone Report, provided as a PDF file, documenting the key characteristics and authenticity of the stone.
For customers who require independent laboratory verification, we offer the option to add third-party gemstone reports. Upon selection, the gemstone will be submitted to the chosen accredited gemological laboratory. Estimated fees and processing times are as follows:
- BGL – Brief Report: USD 19
Processing time: approximately 1–2 business days - AIG – Brief Report: USD 38
Processing time: approximately 7–8 business days - LOTUS – Soft Cover Report: USD 128
Processing time: approximately 7–8 business days
All external reports are optional and can be selected as an add-on prior to shipment. Processing times may vary slightly depending on laboratory workload.
All gemstones are shipped directly from Thailand, one of the world’s leading gemstone trading hubs. We deliver to almost all countries worldwide, using reliable and insured shipping partners to ensure safe and secure delivery. Each order is carefully packaged, and tracking details are provided once the shipment has been dispatched. Delivery times may vary depending on destination and local customs procedures. Any applicable duties, taxes, or import fees are the responsibility of the recipient.
We offer flexible payment options to accommodate our international clientele. Most common payment methods are accepted at checkout. Customers who choose to pay via wire transfer (Wise) receive a 5% discount, which can be selected directly during the checkout process.
Specification
Overview
| Total Carat | 0.55 ct / 1 pcs |
|---|---|
| Region / Mine | Welo |
| Country of Origin | Ethiopia |
| Saturation / Tone | Intense |
|---|---|
| Shade | Play of Colors |
| Transperency | Semi Transparent |
|---|
| Stone Type | Type I |
|---|
| Dimensions 1 (L/W/H) | 7.20 x 5.20 mm |
|---|
Treatment
No indication of artificial enhancement.
Read more about common gemstone treatments →
