Is Opal a Substitute for Diamond?

Discover whether opal is a good substitute for diamond! Learn about durability, price, brilliance, and alternatives with expert insights.


By Midhun gb
4 min read

Opal

Snapshot

Opals are a true astrological substitute for diamonds in terms association with Venus. Also you can buy high quality Opals from Vedic Crystals


Table of Contents

  1. Introduction
  2. Understanding Diamonds
  3. Understanding Opals
  4. Key Differences Between Opal and Diamond
  5. Is Opal a Good Substitute for Diamond?
  6. Pros and Cons of Choosing Opal Over Diamond
  7. Best Opal Varieties for Jewelry
  8. Alternative Diamond Substitutes Besides Opal
  9. How to Care for Opal Jewelry
  10. Final Verdict

1. Introduction

Diamonds are the classic choice for gemstone for Venus but their high price often leads people to search for substitutes. One such alternative is opal, a stunning gemstone with a unique play of colors. But is opal a true substitute for diamond?

In this guide, we’ll compare opal vs. diamond, exploring their differences, durability, cost, and whether opal can serve as a viable alternative.

Australian Opal pendant


2. Understanding Diamonds

Diamonds are formed under extreme pressure and heat deep within the Earth’s crust. They are renowned for their:

  • Brilliance – Diamonds reflect light exceptionally well, creating an unmatched sparkle.
  • Durability – With a Mohs hardness of 10, diamonds are the hardest natural material.
  • Rarity and Value – High-quality diamonds are rare and expensive, often used in engagement rings and luxury jewelry.

Diamond Properties Table

Property Diamond
Hardness (Mohs) 10
Brilliance High
Durability Extremely durable
Price Expensive

3. Understanding Opals

Opals are hydrated silica gemstones that display opalescence, a shifting play of colors that makes them unique. There are different types of opals, including white opal, black opal, and fire opal.

Key Features of Opals:

  • Softness – Opals have a Mohs hardness of 5.5–6.5, making them much softer than diamonds.
  • Unique Colors – Unlike diamonds, opals showcase an array of colors due to light diffraction.
  • Affordability – Opals are significantly cheaper than diamonds, making them a budget-friendly choice.

Opal Properties Table

Property Opal
Hardness (Mohs) 5.5–6.5
Brilliance Moderate
Durability Brittle and prone to scratches
Price Affordable

 

Fire Opal Earrings


4. Key Differences Between Opal and Diamond

Hardness & Durability

  • Diamonds are extremely durable, perfect for everyday wear.
  • Opals are fragile and prone to scratches and cracks.

Brilliance & Sparkle

  • Diamonds have a high refractive index, creating a dazzling sparkle.
  • Opals display color play but lack the brilliance of diamonds.

Price

  • Diamonds are expensive, with prices reaching thousands per carat.
  • Opals are more affordable, with high-quality black opals being the most valuable.

Appearance

  • Diamonds have a clear, crisp sparkle.
  • Opals have a soft, colorful glow that shifts in the light.

5. Is Opal a Good Substitute for Diamond?

Opals are a true astrological substitute for diamonds in terms association with Venus. 

When to Choose Opal Over Diamond:

✔ If you love colorful gemstones.
✔ If you want an affordable alternative.
✔ If you prefer a bohemian or vintage aesthetic.

When NOT to Choose Opal Over Diamond:

❌ If you need a durable gemstone for daily wear.
❌ If you want the classic brilliance of a diamond.

Fire Opal Stone | Ethiopian | Double Fire | 6 Carat


6. Pros and Cons of Choosing Opal Over Diamond

Pros:

✅ Unique play of colors
✅ More affordable than diamonds
✅ Available in a variety of shades
✅ Ethically sourced

Cons:

❌ Less durable and prone to scratching
❌ Requires special care
❌ Lacks the brilliance and sparkle of diamonds


7. Best Opal Varieties for Jewelry

Not all opals are equal. If you want an opal substitute for a diamond, consider these options:

1. Black Opal

  • The rarest and most valuable opal.
  • Deep, dark body color with bright flashes of red, blue, or green.

2. White Opal

  • More common and affordable.
  • Subtle play of color with a milky white base.

3. Fire Opal

  • Vivid orange or red hues with little play of color.
  • Often faceted to enhance brilliance.

Black Opal Pendant


8. Alternative Diamond Substitutes Besides Opal

If you’re looking for a more durable diamond substitute, consider:

1. Moissanite

  • Almost as hard as diamond (9.25 Mohs).
  • Higher brilliance than a diamond.
  • Affordable and durable.

2. White Sapphire

  • Looks similar to a diamond but with less brilliance.
  • More durable than opal.

White Sapphire pendant

3. Cubic Zirconia (CZ)

  • Cheap and widely available.
  • Lacks the durability of a diamond.

9. How to Care for Opal Jewelry

Since opals are delicate, follow these care tips:

  • Avoid water and chemicals – Opals contain water and can crack if exposed to extreme dryness.
  • Store separately – Keep opal jewelry in a soft pouch to prevent scratches.
  • Clean gently – Use a soft cloth and mild soap; avoid ultrasonic cleaners.

10. Final Verdict: Should You Choose Opal as a Diamond Substitute?

Opals are beautiful and unique, and they are a true substitute for diamonds from an astrological perspective .

 If you love colorful, artistic gemstones, opals are a fantastic choice. However, if you want durability and sparkle, moissanite or white sapphire are better alternatives.

Final Recommendation:

  • For engagement rings? ❌ No, opals are too soft.
  • For occasional wear? ✅ Yes, opals add a unique touch.
  • For affordability? ✅ Yes, they are budget-friendly.

FAQs

Q1: What is the best alternative to diamond?
Opal and White sapphire is the best alternative due to its durability and brilliance.

Q3: Are opals cheaper than diamonds?
Yes, opals are significantly more affordable.

Q4: What makes opals special?
Opals display a unique play of colors that no other gemstone has.


Conclusion:
While opals are stunning and unique, they do not fully replace diamonds. If you want an affordable, colorful alternative, opals are a great choice. 

Would you choose opal over a diamond? Let us know in the comments! 

Also you can buy high quality gemstones of various ratti at affordable prices from Vedic Crystals

For more information about Vedic Crystals and our range of gemstones and rudraksha beads, visit Vedic Crystals website or contact us at contactus@vediccrystals.com/ +91-9811809967 (Whatsapp).

Also if you found this article useful , please share it with someone who might need it.

Moreover, in case you want a additional 5% discount coupon on our entire range of gemstones and Rudraksha : Please comment "Interested" below.

Opal certificate


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