Diamonds might be a girl's best friend, but they can also be a guy's too.

As can sapphires, onyx, and moissanite.

Shopping for a sparkler is a difficult task at the best of times, but when you're looking for a love token, that's not only beautiful, special and unique, but masculine too, it gets that little bit harder.

With the legalisation of gay marriage in many parts of the world this year (hurray!) - and a leap year in February - we expect there will be a lot more proposals to gents, this engagement season.

So, with that in mind, we thought we'd bring you a selection of beautiful rings, with something almost every man will love.

When it comes to engagement rings for men, there are no hard and fast rules. Some of the ones we've selected are specifically designed for guys, while others are simply rings with darker tones, subtle sparkle, or a more masculine shape.

While we expect the choice of men's engagement rings will grow over the next few years, there is a lot of choice already, once you get creative, and shop around. While engagement rings don't necessarily call for a diamond, they do tend to be a little more special than a wedding band, whether that's in the form of etchings, cut-outs, or gemstones.

Popular stones for guys include black diamonds, coloured sapphires and matte stones like onyx or bloodstone. (Check out our posts on proposal rings, acrostic rings, and our alternative gem guide for ideas).

You can also play around with metal choices for your other half too. While platinum and gold are always desirable, green, rose, and black gold are increasingly popular for men, as are tungsten, zirconium, titanium, gun metal and sterling silver.

So, whether your other half has classic tastes (try a signet), cool and edgy style (grey or green stones), or perhaps something understated and romantic (black diamonds and rose gold), scroll through 30 of our favourite picks, to guarantee a 'Yes!'...

1. Fall for Fragments

Rose gold, and black sapphires. Ring by Polly Wales

2. The Platinum Gent

Diamonds set in platinum. Ring by Harry Winston.

3. A Touch of Flash

Rose gold with diamonds. Ring by Tiffany

4. The Modern Signet

Sterling silver with pave black diamonds. Ring by David Yurman.

5. Heavy Metal

Diamond in black gold. Ring by Jewelry by Garo on Etsy

6. Something Blue

Sapphires in rose gold. Ring by Athena Jewelry on Etsy

7. Black Diamonds

Spinel stones in yellow gold vermeil plated sterling silver. Ring by Astley Clarke

8. Green With Envy

Bloodstone in gold-plated brass. Ring by Lulu Frost

9. Copper Crossover

Diamond in rose gold. Ring by Stones & Gold.

10. Matte Mix

Yellow gold with chrysoprase and antique white diamonds. Ring by Mociun.

11. Vintage Lover

Two tone vintage ring with diamonds. Ring by Maejean Vintage

12. Simple Statement

Gold with black onyx. Ring by Tiffany

13. Small Stones

Black diamonds in yellow gold. Ring by Mociun

14. Renegade Ring

Black gold and diamond. Ring by De Beers.

15. Mr. Magpie

Pink gold and diamonds. Ring by Cartier.

16. A Little Alt

White diamonds and yellow gold. Ring by Azlee

17. Rocks On

Yellow gold with green sapphires. Ring by Polly Wales via Catbird.

18. Shade of Grey

Meteorite with sterling silver. Ring by David Yurman.

19. Most Subtle Sparkle

Rose gold and black diamonds. Ring by Anna Sheffield.

20. Rock Star

Mixed gold and diamond. Ring by Glory Be Vintage Wares on Etsy

21. Renaissance Man

Black sapphire and diamonds in yellow gold. Ring by Polly Wales.

22. Gallant Elegance

Bezel set diamond in platinum. Ring by Tiffany

23. 'Til Death Do Us Part

Sterling silver cameo. Ring by Eddie Borgo

24. Breakfast at Tiffany's

Sterling silver. Ring by Tiffany.

25. Engage with Enamel

White gold, zirconium-based alloy, and diamond. Ring by Harry Winston

26. Cool Compass

Sterling silver with gun metal plating. Ring by Eddie Borgo

27. Masculine Metalwork

Hand-carved solid gold. Ring by Bittersweets NY via Catbird

28. Go for Gold

18 karat gold. Ring by Neil Lane.

29. Shape & Texture

Grey diamond with yellow gold and pave diamonds. Ring by Mociun.

30. Brushing Groom

Palladium sterling silver with moissanite. Ring by Lolide on Etsy

Aren't they beautiful? I love the black diamonds and matte stones, but the brushed metal in that last one is a really nice idea too.

Oh, and if you're hoping to be the one proposed to - don't forget to pin your favourite to show to your other half!

Get more Engagement Ring Inspiration here.