CaratHunter
Plans
Marquise|Natural|GIA

0.50ct G SI1 Marquise Natural Diamond

VG • G/SI1 • GIA 7551513494

Certificate GIA 7551513494

Diamond specifications and retailer prices

From £342 GBP
$459 USD
As of November 2, 2026
Save £942 GBP (73%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £1,284 GBP at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 0.5ct natural marquise diamond

This 0.5ct natural marquise sits in the half to three-quarter carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 7551513494. Listed at 17 retailers as of October 30, 2026, with prices from £342 to £1,284, a £942 spread on the same certified stone. NZ Jewellers lists it at £1,284. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

0.50
Carat
G
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
Crown angle35.9°
Pavilion angle40.5°
OriginNatural
Grading LabGIA
CertificateGIA 7551513494
Dimensions7.77 × 4.18 × 2.67 mm
L/W Ratio1.86
Girdle conditionFaceted
Top View
7.77 mm4.18 mm0.50 ctG / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 7551513494
Side View
Table 60.0%Crown 35.9°Girdle: MED-VTKPavilion 40.5°Culet: NoneDepth 63.9%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: £1,284 GBP|Low: £306 GBP|High: £1,381 GBP|Avg: £598 GBP|-7.0%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
November 2, 2026
Retailer 16£342 GBP
Retailer 14£354 GBP
Retailer 15£371 GBP
Retailer 3£382 GBP
Retailer 4£428 GBP
Retailer 7£443 GBP
Retailer 9£503 GBP
Retailer 12£503 GBP
Retailer 10£513 GBP
Retailer 11£517 GBP
Retailer 13£520 GBP
Retailer 5£609 GBP
Retailer 6£661 GBP
Retailer 8£662 GBP
Retailer 2£945 GBP
NZ Jewellers£1,284 GBP

28 data points across 16 retailers

17 retailers£342 GBP to £1,284 GBP

A
Cheapest Retailer
-
£342 GBP
$459 USD
Final sale: no returns
A
Retailer 2
-
£354 GBP
$475 USD
View
A
Retailer 3
-
£371 GBP
$498 USD
View
A
Retailer 4
-
£382 GBP
HK$4,000 HKD
View
A
Retailer 5
-
£428 GBP
$574 USD
View
Retailer 6
-
£430 GBP
$577 USD
View
Price last confirmed 32 days ago
A
Retailer 7
-
£443 GBP
$595 USD
View
A
Retailer 8
-
£503 GBP
View
A
Retailer 9
-
£503 GBP
$675 USD
View
A
Retailer 10
-
£513 GBP
View
A
Retailer 11
-
£517 GBP
View
A
Retailer 12
-
£520 GBP
$698 USD
View
B+
Retailer 13
-
£609 GBP
€778 EUR
View
B+
Retailer 14
-
£661 GBP
ZAR 14,322 ZAR
View
Retailer 15
-
£662 GBP
A$1,367 AUD
View
Price last confirmed 28 days ago
B
Retailer 16
-
£945 GBP
View
Most Expensive
B
NZ Jewellers
8dc96c4e-6568-43ba-8bfe-e8e362d95ce7 · Oct 30
£1,284 GBP
$1,723 USD
View
16 more retailers have this diamond
Prices start from £342 GBPSave up to £942 GBP

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
0.50ct Marquise
£342 GBP