Estate Platinum Black Star Sapphire & Diamond Ring
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Platinum Black Star Sapphire & Diamond Ring – 12ct Sapphire
Striking, dramatic, and beautifully crafted, this platinum ring showcases a captivating black star sapphire framed by a halo of sparkling diamonds. With its bold presence and classic elegance, it’s an extraordinary statement piece for collectors and lovers of rare gemstones.
At the center is a mesmerizing round black star sapphire weighing approximately 12 carats. This unique gemstone displays a distinct star-like phenomenon known as asterism, visible as a radiant six-rayed star that moves across the surface when exposed to direct light—one of the most enchanting natural optical effects in the gem world.
Surrounding the sapphire are 12 round brilliant-cut diamonds, totaling approximately 0.52 carats. Graded G–H color and SI1 clarity, the diamonds add vibrant contrast and crisp sparkle against the deep, velvety sheen of the sapphire.
The ring is crafted in platinum, offering exceptional durability, rich heft, and a cool-toned backdrop that enhances the gemstones’ beauty. It is a size 6.25 and stamped IRID PLAT, indicating a platinum alloy with iridium for added strength.
A dramatic and timeless piece, perfect for gemstone enthusiasts, collectors, or anyone seeking a bold and elegant ring with rare character.
Available exclusively at Springer’s Jewelers—New England’s trusted jeweler since 1870—with locations in Portland, ME; Bath, ME; and tax-free Portsmouth, NH.
Key Features:
Metal: Platinum
Center Stone: Black star sapphire, approx. 12 carats
Optical Effect: Asterism (six-rayed star)
Accents: 12 round diamonds
Total Diamond Weight: Approx. 0.52 carats
Diamond Grade: G–H color, SI1 clarity
Markings: Stamped IRID PLAT
Unique, luminous, and full of vintage allure, this black star sapphire and diamond ring is a truly remarkable piece of fine jewelry—destined to stand out in any collection.
Replacement Value: $3,500
SKU: E5RS4261
Springer's Jewelers offers free shipping for all full-priced items! Buying something on sale? Your shipping costs will be calculated at checkout.
Springer's offers free returns within 30 days of your purchase. Simply reply to any order notification, and you will be emailed a USPS prepaid shipping label for your convenience. Upon inspection of the returned merchandise, your refund will be credited back to you, minus any outgoing shipping fees. You may also wish to return or exchange your merchandise to any of our retail locations. Exchanges and store credit are available within 60 days of purchase.
Free 30 Days Returns, 60 Days for Store Credit
Free shipping on all full-priced orders
Introducing
PAGE Estate
At Springer's, we believe every Estate piece has a story. And while each piece that comes through our doors is unique and has a different story to tell, they all have one thing in common: they yearn for their stories to continue.
Shop New Arrivals PAGE Estate Rings
PAGE Estate Frequently Asked Questions
Do you offer ring sizing?
See an item you love but it's not in your size? We offer complimentary ring sizing within one full size!
Please note that shipping may be delayed on certain ring sizes and styles (including eternity rings) cannot be sized.
With hundreds of jewelry stores online, why shop at Springer's Jewelers?
With complimentary shipping, returns, and insurance cost documentation, Springer’s Jewelers provides high quality fine jewelry to thousands of New England patrons and visitors. Since 1870, Springer’s Jewelers has celebrated their clientele’s most important life moments. We are Maine’s oldest operating jewelry store and are one of the oldest fine jewelers in the United States.
Can I clean my PAGE Estate jewelry at home?
Your jewelry can be maintained with a non-abrasive cleaner. Avoid exposing gold to household bleach as this can cause a discoloration in gold color. Using a soft bristle toothbrush, warm water and soap can provide for a fine solution so long as you are mindful and cautious when cleaning.
Where Can I Buy PAGE Estate?
Portland, Maine
580 Congress Street
Portland, ME 04101
Portsmouth, New Hampshire
100 Market Street
Portsmouth, NH 03801
Bath, Maine
76 Front Street
Bath, ME
PAGE Estate Shipping for Online Orders
Fast shipping
Enjoy the luxury of fast, secure shipping.
Order tracking
Just as soon as your order leaves our doors, you will receive tracking notification and delivery alerts every step of the way.
Get in touch
Have any questions? Feel free to respond to any of your order notifications, there is always a human on the other side of the email.
About Springer's Jewelers
Celebrating Over 150 Years
Springer's is Maine’s oldest operating jewelry store and is one of the oldest fine jewelers in the United States. Springer’s has remained a family-owned business for four generations - meet owners Lilly and Zoe above.
Celebrating Special Moments
Since 1870, Springer’s Jewelers has celebrated their clientele’s most important life moments. From birthdays to anniversaries, graduations, and everything in-between, let Springer's celebrate with you.
Celebrating Yourself
As a women-run company, we can't help but ask, Why are we waiting for someone else to buy us jewelry? We are strong, independent women and we want to empower other women to celebrate themselves with a jewelry self-purchase.
