0.30ct Round Brilliant Diamond Solitaire Engagement Ring

From $712.00

Circumference (mm)	Diameter (mm)	NZ / Australia	US / Canada	China / Japan / Singapore	Hong Kong
44.2	14.1	F	3	4	6
44.8	14.3	F ½		5
45.5	14.5	G	3 ½		7.5
46.1	14.7	G ½		6
46.8	14.9	H	4	7	9
47.4	15.1	H ½
48.0	15.3	I	4 ½	8	10
48.7	15.5	J
49.3	15.7	J ½	5	9	11
50.0	15.9	K
50.6	16.1	K ½	5 ½	10	12
51.2	16.3	L
51.9	16.5	L ½	6	11	13
52.5	16.7	M		12
53.1	16.9	M ½	6 ½	13	14.5
53.8	17.1	N
54.4	17.3	N ½	7	14	16
55.1	17.5	O
55.7	17.7	O ½	7 ½	15	17
56.3	17.9	P
57.0	18.1	P ½	8	16
57.2	18.2				18
57.6	18.3	Q
58.3	18.5	Q ½	8 ½	17	19
58.9	18.8	R
59.5	19.0	R ½	9	18	20.5
60.2	19.2	S
60.8	19.4	S ½	9 ½	19	22
61.4	19.6	T
62.1	19.8	T ½	10	20	23
62.7	20.0	U		21
63.4	20.2	U ½	10 ½	22	24
64.0	20.4	V
64.6	20.6	V ½	11	23	25
65.3	20.8	W
65.9	21.0	W ½	11 ½	24	26
66.6	21.2	X
67.2	21.4	X ½	12	25	27.75
67.8	21.6	Y
68.5	21.8	Z	12 ½	26
69.1	22.0	Z ½
69.7	22.2		13	27	30
70.4	22.4	Z + 1
71.0	22.6		13 ½

Quantity

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🚚 Made to Order. Estimated Delivery within 4 to 6 Weeks

Make your love shine with our 0.30ct Round Brilliant Diamond Solitaire Engagement Ring. This lab-grown diamond, graded E-F colour and VVS-VS clarity, captures light beautifully with every movement. The classic 4-prong setting showcases the stone's brilliance, while the refined 2.0mm band width and SGL certification ensure lasting elegance and authenticity. A timeless symbol of your commitment.

Ring Specifications:

Diamond Type: Lab Grown
Carat Weight: 0.30ct
Colour: E-F
Clarity: VVS-VS
Setting: Classic 4-Prong/Claw
Band Width: 2.0 mm
Band Thickness: 1.8 mm
Certification: SGL

Each ring is made to order. Allow approximately 4-6 weeks after your order and design are confirmed. Shipping information.

Warranty and return eligibility are subject to LAGANI's policies. Returns policy.

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0.30ct Round Brilliant Diamond Solitaire Engagement Ring

From $712.00

Complimentary NZ & AU shipping. Terms apply.

Lifetime diamond warranty.

30-days returns are advertised by LAGANI. Conditions apply.

THE LAGANI EXPERIENCE

A closer look, together.

Some details are easier to appreciate in person. Visit our Auckland CBD studio to explore selected designs and compare diamond shapes. I’ll take the time to understand what matters to you and help you consider this ring or any changes you have in mind.

AUCKLAND CBD BY APPOINTMENT ONLY FROM 1 NOVEMBER 2026

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Hoping to see how a particular ring feels on your hand? Mention the design when booking and we’ll check whether we can have it available for your visit.