Cushion Lab-Grown Alexandrite Trio Diamond Engagement Ring

SKU: LG-ALE-R-007 Categories: ,

Original price was: $1,479.00.Current price is: $1,331.00.10% OFF

5.0 (1 Review)

A shifting alexandrite glow meets a graceful trio of diamonds, creating a distinctive ring for proposals, milestone evenings, and promises meant to feel deeply personal and enduring.

Total Carat Weight
4.21 ct t.w.
Metal Type
14K White Gold

LumGem Fit Guide

Find Your Ring Size

Measure at the end of the day, when fingers are naturally at their largest. Use a non-stretch strip and keep it comfortably snug.

Measure Your Finger

A paper strip wrapped around a finger and marked at the overlap

Wrap a narrow strip of paper around the base of your finger. Mark exactly where the ends meet.

The marked paper strip measured flat against a metric ruler

Lay the strip flat and measure from the end to your mark in millimeters. Match that circumference below.

US Ring Size Chart

Finger circumference
US SizemmUS Sizemm
344.2 959.5
3.545.5 9.560.8
446.8 1062.1
4.548.0 10.563.4
549.3 1164.6
5.550.6 11.565.9
651.9 1267.2
6.553.1 12.568.5
754.4 1369.7
7.555.7 13.571.0
857.0 1472.3
8.558.3

Between sizes? Choose the larger size. Temperature and time of day can affect fit, so measure twice for confidence.
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Estimated Delivery: 5–14 Days Estimated delivery: 5–14 calendar days. In-stock pieces are typically handed to our shipping partner within 24 hours. Pieces made to your selected size or length may require approximately 6 calendar days to craft before shipment.

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Crafted for meaningful moments

About This Piece

One 9mm Premium / Lab-Grown lab-grown alexandrite totaling 3.95 ct, with 6 F-G VS round lab-grown diamonds totaling 0.26 ct, claw prong set in 14K white gold; 9mm cushion center; 7.20mm profile; US Size 7.

SKU
LG-ALE-R-007
Metal
14K White Gold
Setting / Style
Claw Prong / Side Stone
Certificate of Authenticity

About the Product

GEMSTONE INFORMATION

No. of Cushion Lab-Grown Alexandrite
1
Origin
lab-grown
Approximate Dimensions
9mm
Approximate Total Carat Weight
3.95
Quality Grade
Premium / Lab-Grown
Setting Type
Claw Prong

DIAMOND INFORMATION

No. of Round Lab-Grown Diamond
6
Origin
lab-grown
Approximate Total Carat Weight
0.26
Quality Grade
F-G, VS
Setting Type
Prong
Gifting
LumGem gift-ready jewelry packaging
The LumGem Gift Experience Gift-ready, at no extra cost

Your LumGem jewelry arrives carefully presented in our complimentary gift-ready packaging, ready to present as a gift or keep as something special for yourself.

What Does Lab-Grown Mean?
The same beauty, created differently

LumGem lab-grown gemstones are created using advanced technology that recreates the conditions in which gemstone crystals form. They have the same essential chemical composition, crystal structure and optical properties as their natural counterparts—bringing vivid color and brilliance at a more approachable price. Just like natural stones, lab-grown diamonds and gemstones can also be submitted to independent labs such as GIA or IGI for identification or grading.

Real Pieces. Real Moments.

Customer Reviews

See how LumGem jewelry shines in the moments that matter.

Customer Reviews

5.0
Based on 1 review Verified Buyer

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1 review for Cushion Lab-Grown Alexandrite Trio Diamond Engagement Ring

  1. Brian R.Verified Buyer

    The most perfect Christmas gift for my wife. She loves it and even the box blew her away. Will be back next Christmas!

    Purchased: Cushion-Cut Alexandrite Ring

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Lab-grown gemstones are chemically, physically, and optically identical to mined gemstones — grown in controlled environments that replicate the conditions under which gems form naturally, just without digging them out of the earth. To the eye, and to any gemologist, they're the real thing.
Yes. Because lab-grown gemstones share the same crystal structure and hardness as their mined counterparts, they wear, sparkle, and hold up exactly the same way over daily wear.
Growing a gemstone in a controlled environment is more efficient than mining one from the earth, and we sell directly to you rather than through multiple middlemen — savings we pass straight on to you, without cutting corners on quality.
If something isn't right, our 30-Day Return policy gives you time to make sure your piece is the one.
It has the same beauty and chemical composition, with a modern creation process.

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