Halo
Pave
Side Stone
Solitaire
Tension
Three Stone
Vintage
Cushion
Emerald
Oval
Princess
Round
Pear
Lab-Grown Diamonds
Rose Gold
White Gold
Yellow Gold
Anniversary Rings
Eternity Rings
Cluster
Dangle
Fancy
Fashion
Huggies
Hoops
studs
Chains
Tennis
Fashion
Fancy
Lariat
Graduated
Solitaire
Riviere
Birthstone
Pendants
Bangles
Bolo
Chain 
Fancy
Tennis
Bands
Cluster
Stackable
Fancy
Curved
Architectural Emerald-Cut Elegance with Vivid Blue Gemstone Detail
This custom emerald-cut blue gemstone engagement ring combines striking color, clean geometry, and refined luxury craftsmanship. Designed around a vivid emerald-cut blue center gemstone, the setting is accented by brilliant trillion-cut side diamonds that create a balanced three-stone silhouette with exceptional visual contrast.
The elongated emerald-cut center stone showcases elegant step-cut faceting that produces a sophisticated hall-of-mirrors effect, while the trillion side diamonds introduce brilliance and sharp architectural symmetry from every angle.
Crafted with refined claw prongs and a sleek polished band, this engagement ring delivers a timeless yet modern profile designed for clients seeking bold elegance with elevated gemstone styling.
At Neptunes Engagement, every ring is individually made-to-order through our designer-led boutique process. Clients may customize gemstone type, center stone size, diamond quality, metal selection, and overall proportions before production begins.
Perfect for shoppers searching for a custom emerald-cut gemstone engagement ring, blue gemstone engagement ring, sapphire-inspired engagement ring, emerald-cut three-stone ring, lab-grown gemstone engagement ring, or luxury colored gemstone engagement ring crafted with premium metals.
Love this design but envision a different gemstone or customization? Let us help bring your unique vision to life. Reach out to us below to explore your options!
Offering the Best Pricing Nationwide
Member of Jewelers Board of Trade
Member of Chamber of Commerce
Member of American Gems Society
Secure payment
INSURED SHIPPING
Keep in mind: Every gemstone, including lab-grown diamonds, varies in quality beyond the 4Cs (Cut, Color, Clarity, and Carat). At Neptunes Jewelry, we meticulously hand-select each diamond to ensure the highest quality and value for our clients.
We’re committed to ensuring the quality and perfect fit of your treasured piece.
Processing Time
In-stock items process within 3 business days. Our standard lead time is 7-10 business days after the CAD rendering is approved
with timelines specified on each product page.
For rush orders, please email us to see if we can accommodate your request. Note that your shipping choice does not expedite production.
Insured Shipping
Once ready, we’ll send tracking details. All orders ship fully insured, with signatures required of the recipient. Any fees from failed delivery attempts are the purchaser’s responsibility.
Architectural Emerald-Cut Elegance with Vivid Blue Gemstone Detail
This custom emerald-cut blue gemstone engagement ring combines striking color, clean geometry, and refined luxury craftsmanship. Designed around a vivid emerald-cut blue center gemstone, the setting is accented by brilliant trillion-cut side diamonds that create a balanced three-stone silhouette with exceptional visual contrast.
The elongated emerald-cut center stone showcases elegant step-cut faceting that produces a sophisticated hall-of-mirrors effect, while the trillion side diamonds introduce brilliance and sharp architectural symmetry from every angle.
Crafted with refined claw prongs and a sleek polished band, this engagement ring delivers a timeless yet modern profile designed for clients seeking bold elegance with elevated gemstone styling.
At Neptunes Engagement, every ring is individually made-to-order through our designer-led boutique process. Clients may customize gemstone type, center stone size, diamond quality, metal selection, and overall proportions before production begins.
Perfect for shoppers searching for a custom emerald-cut gemstone engagement ring, blue gemstone engagement ring, sapphire-inspired engagement ring, emerald-cut three-stone ring, lab-grown gemstone engagement ring, or luxury colored gemstone engagement ring crafted with premium metals.