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10+ Total Diamonds Found

3.00–3.99 Carat Natural Round Diamonds

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

10+ in stock GIA & IGI certified 3.00–3.99 ct
Sign in for price Open a trade account WhatsApp us
Shop by carat 0.50–0.69 ct · In stock 0.70–0.89 ct · In stock 1.00–1.49 ct · In stock 1.50–1.99 ct · 10+ 2.00–2.49 ct · In stock 2.50–2.99 ct · 10+ 3.00–3.99 ct · 10+ 4.00–4.99 ct · In stock 5.00+ ct · 10+

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

Round Available
GIA
3.01ct Round
D · SI2 · EX · None Fluor
9.19 × 9.14 × 5.72
Polish
EX
Symmetry
EX
Ratio
–
Round Available
GIA
3.02ct Round
D · SI1 · EX · None Fluor
9.33 × 9.28 × 5.76
Polish
EX
Symmetry
EX
Ratio
–
Round Available
GIA
3.02ct Round
D · SI1 · EX · None Fluor
9.27 × 9.22 × 5.68
Polish
EX
Symmetry
EX
Ratio
–
Round Available
GIA
3.01ct Round
F · I1 · EX · Faint Fluor
9.20 × 9.15 × 5.72
Polish
EX
Symmetry
EX
Ratio
–
Round Available
GIA
3.40ct Round
G · VVS1 · EX · Faint Fluor
9.61 × 9.54 × 5.99
Polish
EX
Symmetry
EX
Ratio
–
Round Available
IGI
3.73ct Round
I · SI1 · EX · None Fluor
10.00 × 9.93 × 6.14
Polish
EX
Symmetry
EX
Ratio
–
Round Available
GIA
3.01ct Round
K · VS2 · EX · Faint Fluor
9.45 × 9.40 × 5.59
Polish
EX
Symmetry
EX
Ratio
–
Round Available
GIA
3.00ct Round
I · SI1 · EX · Faint Fluor
9.40 × 9.34 × 5.61
Polish
EX
Symmetry
EX
Ratio
–
Round Available
GIA
3.01ct Round
J · SI2 · EX · Faint Fluor
9.17 × 9.08 × 5.78
Polish
EX
Symmetry
EX
Ratio
–
Round Available
GIA
3.50ct Round
K · VVS2 · EX · Strong Fluor
9.72 × 9.64 × 6.01
Polish
EX
Symmetry
EX
Ratio
–
Round Available
GIA
3.01ct Round
L · VS2 · EX · Faint Fluor
9.20 × 9.14 × 5.75
Polish
EX
Symmetry
EX
Ratio
–
Round Available
GIA
3.01ct Round
I · VS1 · EX · None Fluor
9.21 × 9.16 × 5.78
Polish
EX
Symmetry
EX
Ratio
–
Round Available
GIA
3.80ct Round
J · SI2 · EX · Faint Fluor
9.96 × 9.88 × 6.18
Polish
EX
Symmetry
EX
Ratio
–
Round Available
GIA
3.13ct Round
G · VS1 · EX · Medium Fluor
9.44 × 9.41 × 5.75
Polish
VG
Symmetry
EX
Ratio
–
Round Available
GIA
3.58ct Round
K · VS2 · EX · None Fluor
9.78 × 9.70 × 6.08
Polish
EX
Symmetry
EX
Ratio
–
About 3.00–3.99 carat natural round diamonds

How big is a 3.00–3.99 carat natural round?

The 10+ natural round diamonds from 3.00–3.99 carats in stock face up at 9.2–10.0 × 9.1–9.9 mm, colors D–L, each GIA or IGI certified.

Diamond size chart (mm to carat) All natural round 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 cushion 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.