Star Trek X RockLove Crystal Delta Ring - Blue

Star Trek X RockLove Blue Crystal Delta Ring

$125.00

Shipping calculated at checkout.

Size

View size guide

Diameter (in mm)	Circumference (in mm)	US	UK	EUR
14.05	44.14	3	F	44
14.86	46.68	4	H 1/2	-
15.70	49.32	5	J 1/2	-
16.51	51.87	6	M	52 3/4
17.35	54.51	7	O	55 1/4
18.19	57.15	8	Q	57 3/4
18.89	59.34	9	R 3/4	-
19.84	62.33	10	T 1/2	-
20.68	64.97	11	V 1/2	-
21.49	67.51	12	Y	67 1/2
22.33	70.15	13	Z+1	-
23.06	72.45	14	Z+3	-
23.87	74.99	15	Z+5	-

View International Conversion Chart

How to find your size

Measure a ring
(diameter)

Measure a finger
(circumference)

Step 1: Find a ring that already fits you well. It’s better to use one with a band that isn’t too thick.

Step 2: Measure the internal diameter (mm) of your ring by measuring the distance between the inside of the upper edge to the inside of the lower edge.

Step 3: Using your measurement, find your size using the conversion chart at the top of this screen. (E.g. 17.3 mm = Size 7 US)

Ring on Ruller

Step 1: Cut a piece of string, roughly 4 inches. Wrap the string around your finger. The string should sit comfortable, and not be too tight.

Step 2: Mark the overlapping parts with a pen.

Step 3: Measure the circumference by laying the string flat, and measure the 2 points in mm using a ruler or tape measure.

Step 4: Find the size in the conversion chart above. (E.g. 54.4 mm = Size 7 US)

Ring sizing tips

Measure the finger you’ll wear the ring on. Your left and right ring fingers may be different sizes.
Measure a few times. Your hands will shrink when they’re cold and swell when they’re warm.
Measure in the evening. Your hands actually change size throughout the day.
Measure your knuckle if it’s bigger than the base of your finger so that your ring slides on easily.
Women tend to be a size 6–7 and men are usually a size 9–10.
If you’re between sizes, go with the closer size. If you’re perfectly between sizes, buy a size down and take your ring to a jeweler to be resized.

Buy a ring sizer

Find your perfect size with an affordable ring sizer on Amazon.

Buy On Amazon

Official licensed Star Trek™️ product
The iconic Starfleet delta shines in this timeless ring
Custom cut and faceted cubic zirconia crystal
Handcrafted in solid sterling silver
Premium nickel-free hypoallergenic
Ethically produced with certified manufacturing standards
Hallmarked for authenticity
Designed in New York, responsibly crafted in Thailand
15mm x 12mm x 4mm
Includes collector’s jewelry box

A classic and sophisticated homage to the delta insignia, the iconic symbol of Star Trek Starfleet. Blue was worn by the honorable science and medical division including McCoy and Spock.

Handcrafted in sterling silver, a custom faceted vibrant sapphire blue cubic zirconia crystal is set within a sleek sculpted setting. Engraved with the Star Trek logo on the reverse, the Crystal Delta Ring melds into a subtle rounded nickel-free sterling band, available in an array of sizes.

Every piece of Star Trek | RockLove jewelry arrives in a signature Star Trek | RockLove Jewelry Box featuring black and silver metallic with vibrant blue galaxy print.

All RockLove is officially licensed product. According to territory regulations, this product can not be shipped to Brazil, India, Kuwait, Mexico, Morocco, Portugal, and Switzerland.

View the size guide below. If in doubt, please reach out to us for additional assistance.

View Size Guide

Orders are processed within 1-3 business days after payment. International orders are subject to VAT.

View Shipping Policy

RockLove offers returns within 15 days of delivery. All returns are for store credit minus the cost of shipping and a $10 restocking fee per item.

All sales are final on Limited Edition, Timed Edition or Exclusive Products that are made to order. Your purchase of these pieces reserves your specific item in the limited edition sequential order and cannot be refunded or returned after the transaction is placed.

View Return Policy

Customer Reviews

Let customers speak for us

from 1268 reviews

Love this beautiful necklace! Very well made, sturdy, goes with any outfit. I wear all the time! A++++++

Anonymous

10/21/2026

Naruto Shippuden X RockLove Itachi Necklace

Always lovely to do business with. Very nice and professional and the jewelry is beautiful. Thank you

10/19/2026

I absolutely LOVE that you offered blind boxes for your Star Wars, Disney and marvel lines- the Star Wars pieces I received were PERFECT!! Such a great idea! Thank you!!

Allyson King

10/17/2026

I got to wear my jewelry to hoco and I can’t wait to continue to wear it!

Josephine Corder

The jewelry was beautiful. I purchased the Disney Boxes. And 1 marvel box. The jewelry was well made and much more than I expected. I have several Christmas gifts out of the purchase.

judy shackett

I love rock love jewlery, I have been with them since they had Clive Barker pieces Quality Jewlery that is fashion and pop culture

Carrie Kawa

RockLove created a wonderfully exciting one of a kind experience with the mystery boxes. Every item received was top quality and visually thrilling!

Marshall

10/16/2026

Gefällt mir sehr gut nur die "Brosche" könnte etwas größer sein.

Roman

Magic: The Gathering X RockLove Mishras Bauble Necklace

Customer Service took care of it right away and loved it!

10/15/2026

Great value! Loved the selection and quality is so excellent. RockLove never disappoints!

karen brown

Pretty

Jgooglry

Both mystery boxes were amazing!

10/14/2026

Excellent and responsible service, thank you!

Rhianne51

Beautiful work! Glad to have Kiramman family crest related merch!

League of Legends X RockLove ARCANE Caitlyn and Vi Mad World Necklace

Great box. Good value for the money.

Shelley

10/13/2026

Currency

Star Trek X RockLove Blue Crystal Delta Ring

How to find your size

Ring sizing tips

Buy a ring sizer

Shop by Fandom

Customer Reviews

Let customers speak for us