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Diamonds in stock

3.00–3.99 Carat Natural Cushion Diamonds

Natural cushion diamonds from 3.00–3.99 carats, GIA or IGI certified. Widen the filters on the left to see more.

In stock GIA & IGI certified 3.00–3.99 ct
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Shop by carat 1.00–1.49 ct · 10+ 1.50–1.99 ct · In stock 2.00–2.49 ct · 10+ 2.50–2.99 ct · In stock 3.00–3.99 ct · In stock 4.00–4.99 ct · In stock 5.00+ ct · In stock

GIA & IGI certified natural diamonds · Same-day shipping before 6 PM ET · No MOQ · Trade approval same business day before 4 PM ET

Cushion Available
HRD
3.01ct Cushion
G · VS2 · Medium Fluor
7.93 × 7.96 × 5.49
Polish
EX
Symmetry
VG
Ratio
1.00
Cushion Available
GIA
3.52ct Cushion
H · SI1 · Faint Fluor
10.65 × 8.29 × 5.50
Polish
EX
Symmetry
EX
Ratio
1.28
Cushion Available
GIA
3.02ct Cushion
J · SI1 · None Fluor
10.45 × 7.86 × 5.08
Polish
EX
Symmetry
EX
Ratio
1.33
Cushion Available
GIA
3.02ct Cushion
I · VS1 · Faint Fluor
10.31 × 7.86 × 5.09
Polish
EX
Symmetry
EX
Ratio
1.31
Cushion Available
GIA
3.01ct Cushion
I · VVS1 · Faint Fluor
10.30 × 8.08 × 4.99
Polish
EX
Symmetry
EX
Ratio
1.27
Cushion Available
GIA
3.02ct Cushion
H · VS2 · Strong Fluor
10.52 × 7.91 × 5.04
Polish
EX
Symmetry
EX
Ratio
1.33
Cushion Available
GIA
3.02ct Cushion
J · VVS2 · Medium Fluor
10.19 × 7.99 × 5.20
Polish
EX
Symmetry
EX
Ratio
1.28
Cushion Available
GIA
3.70ct Cushion
K · VVS2 · Medium Fluor
11.06 × 8.53 × 5.50
Polish
EX
Symmetry
EX
Ratio
1.30
About 3.00–3.99 carat natural cushion diamonds

How big is a 3.00–3.99 carat natural cushion?

The natural cushion diamonds from 3.00–3.99 carats in stock face up at 7.9–11.1 × 7.9–8.5 mm, colors G–K, each GIA or IGI certified.

Diamond size chart (mm to carat) All natural cushion diamonds

3.00–3.99 carat natural diamonds in other shapes

3.00–3.99 ct natural oval 3.00–3.99 ct natural emerald cut 3.00–3.99 ct natural round 3.00–3.99 ct natural pear 3.00–3.99 ct natural radiant cut 3.00–3.99 ct natural marquise
Natural diamonds Antique cuts Natural melee Diamond size chart (mm to carat) Custom jewelry We also carry certified lab-grown diamonds →

Trade questions

Is every natural diamond certified?

Yes. Each natural diamond on this page has a GIA or IGI report. Open the diamond page for the report number and verify it on the lab’s website.

How fast do you ship?

Orders placed before 6 PM ET ship the same day. International delivery takes 3–4 business days.

Can you find a natural diamond that is not listed?

Yes. We source diamonds to your specification. Send the shape, size, color and clarity on WhatsApp.

How do I see prices?

Prices are for the trade. Sign in, or open a trade account: approval is the same business day if you apply before 4 PM ET.