CaratHunter
Plans
Marquise|Natural|GIA

0.50ct H SI2 Marquise Natural Diamond

EX • H/SI2 • GIA 1553255657

Certificate GIA 1553255657

Diamond specifications and retailer prices

From £479 GBP
$643 USD
As of November 2, 2026
Save £577 GBP (55%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £1,799 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 H colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1553255657. Listed at 14 retailers as of October 29, 2026, with a 120% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

0.50
Carat
H
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1553255657
Dimensions8.35 × 4.12 × 2.49 mm
L/W Ratio2.03
Key to symbols
Twinning Wisp
Top View
8.35 mm4.12 mm0.50 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1553255657
Side View
Table 60.0%CrownGirdle: MED-VTKPavilionCulet: NDepth 60.3%

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: £1,799 GBP|Low: £399 GBP|High: £1,799 GBP|Avg: £810 GBP
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
November 2, 2026
Retailer 9£479 GBP
Retailer 8£510 GBP
Retailer 5£519 GBP
Retailer 11£519 GBP
Retailer 10£540 GBP
Retailer 4£600 GBP
Retailer 3£639 GBP
Retailer 6£683 GBP
Retailer 13£742 GBP
Retailer 2£743 GBP
Retailer 7£1,056 GBP
Retailer 12£1,656 GBP
NZ Jewellers£1,799 GBP

42 data points across 13 retailers

14 retailers£479 GBP to £1,056 GBP

A
Cheapest Retailer
-
£479 GBP
$643 USD
Final sale: no returns
B+
Retailer 2
-
£510 GBP
$684 USD
View
B+
Retailer 3
-
£519 GBP
$697 USD
View
B+
Retailer 4
-
£519 GBP
$697 USD
View
B+
Retailer 5
-
£531 GBP
$712 USD
View
B+
Retailer 6
-
£540 GBP
$724 USD
View
B+
Retailer 7
-
£600 GBP
$805 USD
View
B
Retailer 8
-
£639 GBP
$858 USD
View
B
Retailer 9
-
£683 GBP
View
B
Retailer 10
-
£690 GBP
$926 USD
View
B
Retailer 11
-
£743 GBP
€950 EUR
View
B
Retailer 12
-
£1,056 GBP
View
Retailer 13
-
£1,656 GBP
CA$3,087 CAD
View
Price under review
Most Expensive
NZ Jewellers
208f3f6d-ddf7-4dc5-bb3f-b01eab52b41a · Oct 30
£1,799 GBP
$2,414 USD
View
Price under review
13 more retailers have this diamond
Prices start from £479 GBPSave up to £577 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
£479 GBP