Illustrations are educational diagrams, not product photographs or scale drawings. See the linked product page for the current design gallery.
An east-west marquise ring places its longest line across the finger. For a 6 ct design, the useful fit question is how the complete setting occupies that space: where its ends sit, how its shoulders meet the hand, and whether the fingers beside it can move comfortably. Ring size alone cannot answer those questions.
MISSISSI’s Marquise Horizon pairs a 6 ct marquise-cut lab-grown center diamond, specified as E color and VVS clarity, with two white tapered-baguette lab-grown diamond accents. Broad, sculpted shoulders continue the horizontal line, while V-shaped end protectors frame the center’s points. That complete outline deserves attention alongside the center stone.
What east-west changes, and what it does not
East-west describes direction: the marquise’s points extend toward the shoulders rather than along the finger. Turning the same stone does not change its carat weight. As GIA explains, carat is a measure of weight; it is not a millimeter measurement.
For Marquise Horizon, 6 ct refers to the center diamond only. It does not include the two accents, and no combined carat weight is stated. Do not convert that number into a promised stone length or finished ring width. Ask for the dimensions of the center selected for your made-to-order ring.
Separate stone length from finished width
A marquise’s length runs between its two points; its width crosses the fullest middle section, as shown in GIA’s marquise anatomy guide. With an east-west setting, the stone’s length runs across the finger, while its width runs along it. The terminology can sound reversed when you are thinking about your hand.
Request an annotated top view with two distinct measurements:
- Center-stone length: the diamond’s tip-to-tip measurement.
- Finished across-finger span: the outermost width of the completed upper setting, including metal, shoulders and accents wherever they extend the outline.
Ask the jeweler to mark the endpoints. “Width” could otherwise mean the diamond’s belly, the shank, or the complete setting. A measurement is useful only when both people mean the same distance.
Give neighboring fingers room
A wide overhead silhouette can feel different when the hand closes. Consider both ends of the setting and the shoulders, not just the central stone. During a fitting, relax your hand, bring the fingers together, gently bend them and hold an everyday object. Notice pressure, rubbing or a persistent tendency for the ring to turn.
If you are ordering remotely, share your intended finger and professionally checked size with the concierge. Request a dimensioned view for that size. Once dimensions are confirmed, a paper footprint can help you judge visual coverage, but it cannot reproduce metal thickness, height, weight or comfort. Keep those questions separate from the appearance check.
Read the broad shoulders in three dimensions
Marquise Horizon’s sculpted shoulders and baguette accents contribute to its horizontal presence. Their appearance from above does not establish how they feel against adjacent fingers. Ask where the shoulders are widest, how they taper toward the lower shank, and how far the setting stands above the finger.
The specified V-shaped end protectors and under-girdle support also belong in that discussion. GIA identifies marquise points as vulnerable areas. End protection is relevant, but it is not a guarantee against damage or a substitute for checking the finished setting’s dimensions.
Check the wedding band from the side
An east-west orientation does not guarantee that a straight wedding band will sit flush. The underside of the setting, shoulder shape and the other band’s height and profile determine whether the pieces meet, leave a gap or touch in an unwanted place.
If you already own a band, provide its dimensions and clear side-view photographs. Ask the jeweler to assess the two profiles together. If you are choosing both rings, confirm the intended pairing before ordering; a pleasing top-view arrangement does not establish clearance underneath.
Quick answers
Does 6 ct tell me the ring’s width in millimeters?
No. It specifies center-stone weight. You need both the selected diamond’s dimensions and the finished setting’s measurements to understand the across-finger footprint.
Can I simply use my usual ring size?
Use it as a starting point for a professional fit discussion. Confirm the intended finger and consider the actual shank and shoulder profile. An inside ring size does not describe the upper setting’s span.
Before you choose Marquise Horizon
Request the selected center’s dimensions, finished across-finger span, setting height and shoulder measurements in your size. Confirm wedding-band compatibility separately and ask about grading-report availability before purchase. The product gallery illustrates the design rather than an allocated center stone, so its hand views should not be used as a measuring scale.
The most useful next step is a focused conversation with the MISSISSI Jewelry Concierge: specify your finger, size and intended band, then ask for the measurements that connect the horizontal design to your hand.