1.5ct Natural Diamond Engagement Ring
1.5 ct natural diamond engagement rings in 18K solid gold, every centre stone GIA-certified. 1.5 ct is one of the most considered carat weights. Large enough to feel substantial on the finger, without crossing into statement-piece territory.
18K 1.7ct Round Cut Natural Diamond Three Stone Engagement Ring
18K 1.33ct Round Cut Natural Diamond Side Stone Engagement Ring
18K 1.62ct Round Cut Natural Diamond Halo Engagement Ring
18K 1.51ct Pear & Round Cut Natural Diamond Toi et Moi Engagement Ring
18K 1.3ct Emerald Cut Natural Diamond Bezel Engagement Ring
18K 1.19ct Round Cut Natural Diamond Solitaire Engagement Ring
18K 1.34ct Round Cut Natural Diamond Solitaire Engagement Ring
18K 1.5ct Round Cut Natural Diamond Solitaire Engagement Ring
18K 1.55ct Natural Diamond Toi et Moi: Radiant & Pear Duo Harmony
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Compare
A 1.5 carat natural diamond engagement ring costs $11,550 to $13,800 as an 18K gold solitaire. This page has rings from 1.18 to 1.81 carats, priced $2,750 to $15,000. Every ring is made in 18K solid gold.
Rings with side stones or a halo cost less at the same total weight, because the carats are split across several diamonds. See 1.5 carat diamond ring prices by shape for the full comparison.
How big 1.5 carats looks
A 1.5 carat round diamond measures about 7.4mm across. A 1 carat round measures about 6.5mm. A 1.5 carat oval measures about 8.5 × 6.3mm and looks larger than a round of the same weight. See 1.5 carat oval engagement rings.
Setting styles
A solitaire puts all the attention on the center stone. A halo adds a frame of small diamonds that makes the center stone look larger. A three-stone ring adds a smaller diamond on each side.
Certification
Natural center diamonds come with a GIA grading report. The report ships with your ring. See sample reports.
With every ring
- Free insured shipping
- 30-day returns on unworn, unaltered pieces
- Lifetime warranty against manufacturing defects
- Complimentary cleaning and resizing
Compare 1.5 carat lab-grown engagement rings. Want a different design? Design your own ring. You approve a CAD render before your ring is made.
Frequently Asked Questions
How big does a 1.5 ct diamond look?
7.4mm round. On an average size 6 finger, 1.5 ct reads as substantial without being overwhelming. On larger fingers (size 7.5+), consider going slightly larger or adding a halo.
How much does a 1.5 ct natural diamond engagement ring cost?
Pricing depends on cut, colour and clarity. Riyanika 1.5 ct natural diamond engagement rings are listed at every price tier on this page. Natural diamonds carry the provenance of a mined stone, with the long-term resale floor and tradition that come with a Kimberley-Process-certified earth-mined diamond.
Should I choose 1.5 ct natural diamond or a different size?
Natural diamond pricing scales sharply above 1 ct because larger natural stones are genuinely rare. Pick the carat that fits the finger and the budget, not a carat that compromises on cut quality.
Will a 1.5 ct ring need a halo to look bigger?
Not necessarily. A 1.5 ct centre stone in a clean solitaire reads confidently on most fingers. A halo is for buyers who want the visual effect of a larger centre without paying for one.
Are 1.5 ct natural diamond diamonds GIA-certified?
Every centre stone above 0.30 ct is GIA-certified, Kimberley Process compliant, and traceable back to the mine of origin.
Can a 1.5 ct engagement ring be customised?
Yes. Choose your shape, setting, metal colour and prong style. Every Riyanika engagement ring can be made bespoke at no extra cost. We CAD-render every bespoke piece before we make it.