12.8 X 6.3 Mm Marquise Shape Natural Black Diamond

£378.00

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Ring Size

Our rings follow standard US sizing. Please refer to our Size Chart for exact measurements before ordering. If you're between sizes or unsure, we recommend confirming your size with a local jeweler.

Care information

Store in a dry place and avoid chemicals or moisture. Clean gently with a soft cloth to maintain shine.
Please read our Jewelry Care Guide for detailed instructions.

Shipping and returns

We Offer Worldwide Free Shipping on All Fine Jewelry.
Express Shipping Is Available for $49.
All Orders Are Fully Insured and Delivered Safely Worldwide.
Delivery Time Is 15-20 Working Days Under Standard Shipping.
You Will Receive Tracking Information Once Your Order Ships.
30-Day Money-Back Guarantee for Unused Products.
Products Must Be Returned with All Original Contents and Packaging.
Refunds Processed After Inspection Within 30 Days of Delivery.

Overviews

This 12.8 X 6.3 Mm Marquise Shape Loose Black Diamond Offers A Bold, Elongated Profile With A Deep Natural Black Tone. Estimated Between Approximately 1.60 To 1.75 Carats, This Natural Black Diamond Is Cut In A Modified Brilliant Style With 56–58 Facets To Enhance Surface Reflection. The Marquise Diamond Shape, Defined By Its Pointed Ends And Stretched Silhouette, Creates A Lengthening Effect That Adds Strong Visual Impact. Its Size And Proportions Make It Ideal For Statement Black Diamond Engagement Rings, Diamond Cross Pendants, Or Diamond Earrings That Require Both Presence And A Distinctive Outline.

Graded AA To AAA For Quality, This Marquise Black Diamond Is Crafted With Attention To Symmetry, Polish, And Overall Proportion. The Facet Arrangement Supports Balanced Light Performance, While Careful Finishing Helps Control The Natural “Bow-Tie” Effect Seen In Marquise Cuts. Its Durable Structure Allows For Regular Wear Without Compromising Appearance. The Elongated Shape Pairs Well With White Gold, Yellow Gold, Rose Gold, Or Platinum, Offering Flexibility For Custom Jewelry Designs Across Modern And Classic Styles.

This Loose Black Diamond Is 100% Conflict-Free And Responsibly Sourced, Ensuring Authenticity And Ethical Value. With Easy Filtering By Carat, Shape, Quality, And Price, It Is Ready To Be Set Into Custom Engagement Rings, Hoop Earrings, Or Diamond Pendants.

Key Features

Dimensions: Approximately 12.8 X 6.3 Mm
Estimated Carat Weight: Around 1.60 To 1.75 Ct
Cut: Marquise
Clarity: AA To AAA Quality
Quality: Excellent Cut, Brilliance, And Clarity
Uses: Ideal For Rings, Earrings, Pendants
Ethical Status: 100% Conflict-Free & Sustainable
Customization: Personalized Options Available
Perfect For: Birthdays, Anniversaries, Gifts

This Marquise Shape Black Diamond For Sale Combines Expert Craftsmanship, Bold Design, And Ethical Sourcing, Making It A Remarkable And Meaningful Addition To Any Black Diamond Jewelry Collection.