London Blue Topaz 
London Blue Topaz jewelry
London blue topaz 23.80 carat Asscher cut gemstone
large blue topaz gemstone Africa loupe clean stone
London Blue Topaz ring
London Blue Topaz pendant
Asscher cut London blue topaz loose gemstone close view
deep blue topaz 23 carat statement jewelry stone
luxury London blue topaz gemstone for rings pendants
square cut blue topaz gemstone macro detail high clarity
African topaz gemstone Asscher cut close up
premium blue topaz gemstone large size loose stone
elegant blue topaz gemstone Asscher cut detail

London Blue Topaz 23.80 Carat | Asscher Cut Loose Gemstone Africa

Blue
SKU: farhan2380
Product description

Overview

This 23.80-carat London Blue Topaz gemstone features a precision Asscher cut that enhances its deep, velvety blue color and brilliance. Sourced from Africa, this gemstone offers exceptional clarity and a bold presence, making it ideal for luxury jewelry and collectors.

Its large size and geometric faceting create a striking centerpiece for high-end and bespoke jewelry designs.


Product Specifications

  • Gemstone Type: London Blue Topaz
  • Weight: 23.80 Carats
  • Shape / Cut: Asscher Cut
  • Dimensions: 15.48 x 15.43 x 11.94 MM
  • Clarity: Loupe Clean
  • Origin: Africa
  • Treatment: Standard (industry-accepted for color)
  • Ideal For: Rings, pendants, statement jewelry, collector pieces

Gemstone Description

London Blue Topaz is admired for its intense, deep blue tone that offers a luxurious and sophisticated appearance. This gemstone features a classic Asscher cut, known for its step facets and square symmetry that create a captivating hall-of-mirrors effect.

Its impressive 23.80-carat size makes it a rare and eye-catching gemstone, perfect for standout jewelry creations.


Uses & Benefits

Statement Jewelry Centerpiece

Perfect for engagement rings, cocktail rings, pendants, and heirloom jewelry pieces.

Elegant Asscher Cut

Enhances clarity while delivering depth, symmetry, and vintage-inspired brilliance.

Deep Blue Color

Offers a rich, velvety blue tone that stands out in fine jewelry.

Durable Gemstone

With a Mohs hardness of 8, it is suitable for regular jewelry wear.

Birthstone Significance

Topaz is the birthstone for November, symbolizing love, loyalty, and abundance.

Collector Value

Large Asscher-cut topaz gemstones are highly desirable for collectors and designers.


Why Choose This London Blue Topaz

  • Large 23.80 carat size for maximum visual impact
  • Precision Asscher cut for geometric brilliance
  • Deep and rich London blue color
  • Loupe clean clarity for premium quality
  • Sourced from Africa
  • Ideal for luxury jewelry and collectors

Why Choose OneStep Gems 

This 23.80-carat London Blue Topaz is carefully selected for its deep color saturation, loupe-clean clarity, and precise Asscher cut. Its large size and exceptional brilliance make it ideal for statement jewelry and collector-grade designs.

At OneStep Gems, we specialize in sourcing high-carat gemstones with superior clarity and precision cutting.

We provide:

  • Large, high-impact gemstones for luxury jewelry
  • Precision Asscher cuts for maximum brilliance and symmetry
  • Authentic sourcing from trusted regions
  • Strict quality control for color, clarity, and cut

This ensures every gemstone delivers both visual excellence and long-term value.


Frequently Asked Questions 

Is this London Blue Topaz natural?

Yes, it is a natural topaz gemstone with standard industry treatment for color enhancement.

What is an Asscher cut gemstone?

Asscher cut is a square step-cut known for its symmetry, depth, and reflective brilliance.

Can this gemstone be used in engagement rings?

Yes, it is ideal for engagement rings, pendants, and statement jewelry.

Where is this topaz sourced from?

This gemstone is sourced from Africa.

Is topaz suitable for daily wear?

Yes, with a hardness of 8, it is durable enough for regular use.


Care Instructions

  • Clean with warm water, mild soap, and a soft brush
  • Avoid harsh chemicals and extreme heat
  • Store separately to prevent scratches
Shipping & Return

Shipping

Most of the time we are use FedEx Express for our worldwide shipments. it may take 8 to 10 days to deliver for international shipments. Once you placed an order on our website we will provide you the tracking number of the parcel which you can track it. We also have another option of Global Shipping which is normally taking around a month to deliver the parcel. Another option for international shipments is ThaiPost.

Refund and Returns

We have a 14-day return policy, which means you have 14 days after receiving your item to request a return.

Customer will pay for returning an item(s).

To be eligible for a return, your item must be in the same condition that you received it, unworn or unused, with tags, and in its original packaging. You’ll also need the receipt or proof of purchase.

To start a return, you can contact us at info@onestepgems.com. Please note that returns will need to be sent to the following address: Office # 05, Nasrullah Building Shah Qabool, Namak Mandi, Peshawar 25000, Pakistan

If your return is accepted, we’ll send you instructions on how and where to send your package. Items sent back to us without first requesting a return will not be accepted.

You can always contact us for any return question at info@onestepgems.com.

Damages and issues
Please inspect your order upon reception and contact us immediately if the item is defective, damaged or if you receive the wrong item, so that we can evaluate the issue and make it right.

Exchanges

We do offer exchanging of items, once you return an item and we received it, then we can discuss exchange with another item. Upon agreeing with exchange we can adjust the price for the item we are going to exchange.

Refunds
We will notify you once we’ve received and inspected your return, and let you know if the refund was approved or not. If approved, you’ll be automatically refunded on your original payment method within 5 business days. Please remember it can take some time for your bank or credit card company to process and post the refund too.
If more than 15 business days have passed since we’ve approved your return, please contact us at info@onestepgems.com