Round
Oval
Emerald Cut
Marquise
Pear
Rose Cut
Introducing The Guinevere, a captivating marquise-cut green tourmaline engagement ring that blends vintage romance with modern elegance. The rich green center stone is framed by brilliant round and trapezoid diamonds, creating a graceful silhouette with just the right amount of sparkle. With its distinctive color, refined details, and timeless shape, The Guinevere is designed for the bride who loves classic sophistication with a bold, nature-inspired twist.
Green Tourmaline & Diamonds
The Guinevere
Natural Green Tourmaline Marquise Cut Engagement Ring with Diamond Accents
Ring can be set with:
Round
Oval
Emerald
Pear
Cushion
Princess
Marquise (pictured)
Kite
Rose
Tap a shape to get pricing for this ring — we'll reply within 2 business days.
Price includes:
Price includes setting with a Lab-Grown Green Marquise Tourmaline & Diamond Accents
$ 2,470.00
from / customizable
About This Ring
Ships Within6 weeks
Lifetime LimitedWarranty
HandmadeIn the USA
30-DayReturns
Design your perfect ring — we'll help.
Free consultation — in-person at our Huntersville studio or virtual
Ring can be set with:
Round
Oval
Emerald
Pear
Cushion
Princess
Marquise (pictured)
Kite
Rose
Tap a shape to get pricing for this ring — we'll reply within 2 business days.
Setting Details
- Estimated Set Diamond Weight: 0.25CT
- Shoulder Width: 1.7
- Shank Base Width: 2.0
- Shank Base Thickness: 1.8
- Ring Fit: Standard
- Primary Stone Shape: Marquise
- Top Dimensions: 11x 6 mm
- Primary Stone Count: 1
- Stone Size: 10 x 5mm
- Setting Style: Prong
- Prong Count: 6
- Hidden Halo: No
- Accent Stones: Yes
Stone Details
We will ship you a Free Ring Sizing Kit 1-2 business days after you place an order when you select "Send Ring Sizer"
Your custom sizer(s) will arrive with instructions on how to use the sizer and how to update your ring size and width for your order when you’ve determined the best fit.
We will not start making your ring until your ring size has been added to your order.
Your ring will ship for free UPS 2-Day or according to the shipping method you select at checkout. Rings ship in discreet outer packaging with a lovely box and unboxing experience.
Certificates of authenticity are included for most stones.
RETURNS
Engagement rings can be returned or exchanged within 30 days of receipt, provided they are in original, unworn condition. Some exceptions apply. Read our full return policy here.
The Story Behind This Ring
Green Tourmaline Marquise with Diamond Accents
Green tourmaline carries a color that feels rare and alive — rich, earthy, and luminous, with subtle shifts in tone that give the stone a captivating depth as it catches the light. Its deep green hue feels both regal and untamed, reminiscent of ancient forests, hidden gardens, and the timeless romance of legend.
The Guinevere sets this vivid marquise-cut green tourmaline between brilliant round and trapezoid diamond accents, creating an elegant balance between the stone’s distinctive natural beauty and the enduring sparkle of diamonds. The elongated marquise silhouette adds a graceful, almost storybook quality to the design, while the diamond accents bring a refined brilliance worthy of its namesake.
Named for the legendary queen whose story has endured for centuries, The Guinevere is made for the bride who is drawn to romance, individuality, and gemstones that feel truly singular — a ring with the presence of an heirloom and a story all its own.
The Guinevere sets this vivid marquise-cut green tourmaline between brilliant round and trapezoid diamond accents, creating an elegant balance between the stone’s distinctive natural beauty and the enduring sparkle of diamonds. The elongated marquise silhouette adds a graceful, almost storybook quality to the design, while the diamond accents bring a refined brilliance worthy of its namesake.
Named for the legendary queen whose story has endured for centuries, The Guinevere is made for the bride who is drawn to romance, individuality, and gemstones that feel truly singular — a ring with the presence of an heirloom and a story all its own.
A ring as rare and captivating as the woman who wears it.
Make It Yours
Love this ring? Let’s make it perfect.
This design is a starting point. Swap the stone, change the metal, adjust the proportions — our designers work with you directly to create the ring she’ll never want to take off.
Different Stone
Moissanite, Sapphire, Morganite, Diamond, or your own — any shape, any size.
Setting Changes
Add a halo, change the prong count, modify the band profile or shank width.
Start from Scratch
Bring a photo, a sketch, or just a feeling. We’ll design something entirely new.
★★★★★
8,000+
Five-Star Reviews
This is our second ring from Rustic and Main (my husband lost the first) and I don’t think anyone could have made a more perfect ring for my husband. Not only is it beautiful, but it has character and is made from unique materials which got him so excited when I explained each part to him and gave him the certificate of authenticity.
— Anessa P.
This ring is brand new — be one of the first to review it.
See All Reviews →Your Guide
Not sure?We'll help you get it right.
Free one-on-one consultation — in-person at our Huntersville studio or virtual from anywhere.
