Shown with 0.95 Carat Diamond

1 Carat Marquise Three Stone Lab Grown Diamond Engagement Ring

$1,019.00 USD

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Available in 10K Gold, 14K Gold, 18K Gold, Platinum
Made to order and checked at our New York office
Free, insured shipping within the US

Store rating 5.0 out of 5 from 14 customer reviews

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Everything you need, worry-free.

Free US Shipping & 30-Day Returns

Made to Order in 12–14 Days

IGI Certified Diamonds

Free Ring Resizing

Made to order. Order today and it arrives by Thursday, 05 Nov

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Product Details

Celebrate your forever with this elegant Marquise Three Stone Lab Grown Diamond Engagement Ring, designed to showcase exceptional brilliance and timeless sophistication. At its heart is a stunning 0.95 carat marquise cut IGI certified lab grown diamond, gracefully secured in a classic six-prong setting. Complementing the center stone are two sleek baguette cut side diamonds that enhance its elongated silhouette while adding refined sparkle and modern elegance.

The clean lines and balanced three-stone design symbolize your past, present, and future together, making this ring a meaningful choice for engagements, anniversaries, or milestone celebrations. Crafted for lasting beauty and everyday comfort, this luxurious design is destined to become a treasured heirloom.

Specifications

• Jewelry Type: Engagement Ring
• Ring Style: Three Stone Ring
• Diamond Type: Lab Grown Diamond
• Center Diamond Shape: Marquise Cut
• Center Diamond Size: 10.00 × 5.00 mm
• Center Diamond Weight: 0.95 Carat
• Side Diamond Shape: Baguette Cut
• Side Diamond Size: 4.00 × 2.00 × 1.50 mm
• Total Side Diamond Weight: 0.20 Carat
• Setting Style: Six Prong Three Stone
• Diamond Clarity: E–F
• Diamond Color: VVS–VS
• Certification: IGI Certified Center Diamond
• Customization: Available
Sample IGI Report Number: LG828617605 (Sample Reference: You can verify this sample on the IGI website. Your actual diamond will come with its own unique IGI certificate matching your order).

Features

✓ 0.95 Carat Marquise Cut Lab Grown Diamond
✓ Elegant Three Stone Design
✓ Brilliant Baguette Side Diamonds
✓ IGI Certified Center Diamond
✓ Exceptional Fire and Brilliance
✓ Comfortable Everyday Wear
✓ Timeless Minimalist Design
✓ Available in Multiple Precious Metals
✓ Handcrafted Fine Jewelry
✓ Perfect for Engagements and Anniversaries

Why You'll Love It

The graceful marquise center diamond creates an elongated, elegant look while the tapered baguette side diamonds provide a refined architectural balance. This sophisticated three-stone engagement ring beautifully blends classic luxury with contemporary elegance, making it a timeless symbol of everlasting love.

Responsible Materials

Each design is made using 100% certified recycled gold and silver, chosen for their beauty and lower environmental impact. Hallmarked for authenticity and designed to endure.

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Simple Care For Longevity

To maintain your piece’s luster, avoid exposure to harsh chemicals and store it in a soft pouch when not in use. Clean gently with a microfiber cloth and mild soap as needed

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Shipping & Returns

Delivered With Care

Every piece is made to order and arrives in 12 to 14 business days. Shipping is free and fully insured within the US, and we also ship to many other countries, with options shown at checkout. Each piece is carefully packaged, and you will get a tracking number as soon as it ships.

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Easy Returns and Exchanges

If your piece isn’t quite right, we accept returns and exchanges within 30 days of delivery. Items must be unworn and in original packaging. Begin your return online for a seamless process.

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What Happens After You Order

1. Order confirmation. You get an email with your order details right away.

2. Crafting. Your piece is made to order and checked at our New York office.

3. Shipping. It arrives in 12 to 14 business days, insured, and you get a tracking number as soon as it ships.

4. Questions any time. If you need to change something, contact us as soon as possible and we will help.

Virtual Appointment

Visit us in person or connect with us virtually for a one-on-one consultation with a jewelry expert.

Monday–Friday: 10am–6pm ET Set A Meeting

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Metal	Gold Purity	Durability	Best Recommended For
10K Gold	41.7% Pure Gold	Very High (Scratch Resistant)	Active everyday wear and maximum budget-conscious durability.
14K Gold Recommended	58.3% Pure Gold	Optimal (Daily Wear)	The ideal balance of rich color, durability, and luxury prestige. Our top recommendation for bridal and engagement rings.
18K Gold	75.0% Pure Gold	High (More Delicate)	Rich, intense golden hue. High precious metal value and ideal for sensitive skin.
Platinum	95.0% Pure Platinum	Lifetime Durability	Naturally white, dense luxury weight, hypoallergenic, and never tarnishes.
925 Sterling Silver	92.5% Pure Silver	Moderate	Accessible classic elegance. Ideal for everyday fashion and occasional pieces.

Why 14K Gold? Pure gold is naturally soft. 14K Gold combines 58.3% pure gold with durable alloy metals to create the industry-standard balance of rich color and daily wear resistance.

White Gold

Modern & Brilliant

Finished with pure Rhodium for high luster. Maximizes diamond fire and brilliance with zero color tint.

Tone: Crisp, cool silvery-white

Best For: Cool & neutral skin tones

Yellow Gold

Timeless & Royal

The classic standard for bridal jewelry. Naturally warm, royal, and resistant to oxidation.

Tone: Rich, warm radiant gold

Best For: Warm & olive skin tones

Rose Gold

Romantic & Unique

Expertly alloyed with refined copper to create a delicate pink blush tone that never fades.

Tone: Soft blush-pink hue

Best For: Universally flattering

Styling Insight: White Gold pairs seamlessly with cool undertones; Yellow Gold enriches warm undertones; Rose Gold is universally flattering across all complexions.

Size Chart

US	UK / Australian Size	Inside Diameter (mm)	Circumference (mm)
3	F	14.1	44.2
3.5	G	14.5	45.5
4	H½	14.9	46.8
4.5	I½	15.3	48.0
5	J½	15.7	49.3
5.5	K½	16.1	50.6
6	L½	16.5	51.9
6.5	M½	16.9	53.1
7	N½	17.3	54.4
7.5	O½	17.7	55.7
8	P½	18.1	57.0
8.5	Q½	18.5	58.3
9	R½	19.0	59.5
9.5	S½	19.4	60.8
10	T½	19.8	62.1
10.5	U½	20.2	63.4
11	V½	20.6	64.6
11.5	W½	21.0	65.9
12	X½	21.4	67.2
12.5	Z	21.8	68.5
13	Z+1	22.2	69.7

KA Size	Wrist Diameter (in)	Wrist Diameter (cm)
Extra Small	4.76 – 5.25	12.1 – 13.3
Small	5.26 – 5.75	13.4 – 14.6
Medium	5.76 – 6.25	14.6 – 15.9
Large	6.26 – 6.75	15.9 – 17.1
Extra Large	6.76 – 7.25	17.2 – 18.4
Extra Extra Large	7.26 – 7.75	18.4 – 19.7
Extra Extra Extra Large	7.76 – 8.25	19.7 – 21.0

Length (in)	Length (cm)
16	40.50
18	45.75
20	50.75
24	61.00
30	76.25
36	91.50

Size Chart

US	UK / Australian Size	Inside Diameter (mm)	Circumference (mm)
3	F	14.1	44.2
3.5	G	14.5	45.5
4	H½	14.9	46.8
4.5	I½	15.3	48.0
5	J½	15.7	49.3
5.5	K½	16.1	50.6
6	L½	16.5	51.9
6.5	M½	16.9	53.1
7	N½	17.3	54.4
7.5	O½	17.7	55.7
8	P½	18.1	57.0
8.5	Q½	18.5	58.3
9	R½	19.0	59.5
9.5	S½	19.4	60.8
10	T½	19.8	62.1
10.5	U½	20.2	63.4
11	V½	20.6	64.6
11.5	W½	21.0	65.9
12	X½	21.4	67.2
12.5	Z	21.8	68.5
13	Z+1	22.2	69.7

KA Size	Wrist Diameter (in)	Wrist Diameter (cm)
Extra Small	4.76 – 5.25	12.1 – 13.3
Small	5.26 – 5.75	13.4 – 14.6
Medium	5.76 – 6.25	14.6 – 15.9
Large	6.26 – 6.75	15.9 – 17.1
Extra Large	6.76 – 7.25	17.2 – 18.4
Extra Extra Large	7.26 – 7.75	18.4 – 19.7
Extra Extra Extra Large	7.76 – 8.25	19.7 – 21.0

Length (in)	Length (cm)
16	40.50
18	45.75
20	50.75
24	61.00
30	76.25
36	91.50

Size Chart

US	UK / Australian Size	Inside Diameter (mm)	Circumference (mm)
3	F	14.1	44.2
3.5	G	14.5	45.5
4	H½	14.9	46.8
4.5	I½	15.3	48.0
5	J½	15.7	49.3
5.5	K½	16.1	50.6
6	L½	16.5	51.9
6.5	M½	16.9	53.1
7	N½	17.3	54.4
7.5	O½	17.7	55.7
8	P½	18.1	57.0
8.5	Q½	18.5	58.3
9	R½	19.0	59.5
9.5	S½	19.4	60.8
10	T½	19.8	62.1
10.5	U½	20.2	63.4
11	V½	20.6	64.6
11.5	W½	21.0	65.9
12	X½	21.4	67.2
12.5	Z	21.8	68.5
13	Z+1	22.2	69.7

KA Size	Wrist Diameter (in)	Wrist Diameter (cm)
Extra Small	4.76 – 5.25	12.1 – 13.3
Small	5.26 – 5.75	13.4 – 14.6
Medium	5.76 – 6.25	14.6 – 15.9
Large	6.26 – 6.75	15.9 – 17.1
Extra Large	6.76 – 7.25	17.2 – 18.4
Extra Extra Large	7.26 – 7.75	18.4 – 19.7
Extra Extra Extra Large	7.76 – 8.25	19.7 – 21.0

Length (in)	Length (cm)
16	40.50
18	45.75
20	50.75
24	61.00
30	76.25
36	91.50

The Lab-Grown Advantage

Identical & Certified

Chemically and optically identical to mined diamonds, independently certified by the IGI.

Great Value

Usually priced well below a mined diamond of the same size and quality, so your budget goes further.

Responsibly Made

Grown in a lab, so no mining is involved.

We're committed to making your entire experience a pleasant one, from shopping to shipping.

Every item we send comes in our signature Milagros Jewel packaging. Engagement rings arrive in a deluxe ring box within an elegant presentation box ready for your proposal. The presentation box also secures your appraisal certificate and diamond grading report.

Make it Personal With a Custom Design ›

We do create custom pieces. Our designers work with you to bring your vision to life, ensuring every detail reflects your personal style.

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Discreet Packaging ›

Our shipping box won't give away what's inside.

Free Shipping ›

Shipping is free and insured within the US. Other countries see their shipping options at checkout.

Create something extraordinary

Our Custom Ring service lets you bring your dream design to life. Explore a wide range of styles and personalise them with a diamond chosen especially for you from our carefully curated selection.

Customize Your Dream Ring

Designed by you Crafted with care

Let your story shine with a carefully crafted custom ring, where every detail is yours for the making.

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1 Carat Marquise Three Stone Lab Grown Diamond Engagement Ring