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Marquise|Natural|GIA

0.50ct H SI2 Marquise Natural Diamond

EX • H/SI2 • GIA 1565001312

Certificate GIA 1565001312

Diamond specifications and retailer prices

From £411 GBP
HK$4,300 HKD
As of November 1, 2026
Save £715 GBP (64%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £1,529 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 1565001312. Listed at 17 retailers as of November 1, 2026, with a 174% 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
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1565001312
Dimensions8.75 × 4.03 × 2.55 mm
L/W Ratio2.17
Key to symbols
Twinning Wisp, Feather
Top View
8.75 mm4.03 mm0.50 ctH / SI2
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 1565001312
Side View
Table 56.0%CrownGirdle: MD-THKPavilionCulet: NoneDepth 63.2%

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 1
Current: £1,529 GBP|Low: £399 GBP|High: £1,529 GBP|Avg: £635 GBP|+3.4%
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
Retailer 17
November 2, 2026
Retailer 6£411 GBP
Retailer 5£449 GBP
Retailer 15£487 GBP
Retailer 17£487 GBP
Retailer 3£493 GBP
Retailer 16£506 GBP
Retailer 9£507 GBP
Retailer 4£563 GBP
Retailer 14£563 GBP
Retailer 7£579 GBP
Retailer 2£582 GBP
Retailer 8£586 GBP
Retailer 10£596 GBP
Retailer 13£611 GBP
Retailer 12£716 GBP
Retailer 11£1,126 GBP
NZ Jewellers£1,529 GBP

28 data points across 17 retailers

17 retailers£411 GBP to £1,126 GBP

A
Cheapest Retailer
-
£411 GBP
HK$4,300 HKD
B+
Retailer 2
-
£449 GBP
$602 USD
View
Final sale: no returns
A
Retailer 3
-
£487 GBP
$653 USD
View
B+
Retailer 4
-
£487 GBP
$653 USD
View
B+
Retailer 5
-
£493 GBP
$660 USD
View
B+
Retailer 6
-
£506 GBP
$678 USD
View
B+
Retailer 7
-
£507 GBP
SGD 918 SGD
View
B+
Retailer 8
-
£563 GBP
$754 USD
View
Retailer 9
-
£563 GBP
$754 USD
View
Price last confirmed 14 days ago
B+
Retailer 10
-
£579 GBP
$776 USD
View
B+
Retailer 11
-
£582 GBP
View
B
Retailer 12
-
£586 GBP
$785 USD
View
B+
Retailer 13
-
£596 GBP
View
B
Retailer 14
-
£611 GBP
View
B
Retailer 15
-
£716 GBP
€914 EUR
View
B
Retailer 16
-
£1,126 GBP
View
Most Expensive
NZ Jewellers
0aa8f566-e0c6-4d7b-9329-6b4006b43b45 · Oct 30
£1,529 GBP
$2,049 USD
View
Price under review
16 more retailers have this diamond
Prices start from £411 GBPSave up to £715 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
£411 GBP