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Marquise|Natural|GIA

0.50ct H SI2 Marquise Natural Diamond

EX • H/SI2 • GIA 1555995372

Certificate GIA 1555995372

Diamond specifications and retailer prices

From £382 GBP
HK$4,000 HKD
As of November 1, 2026
Save £671 GBP (64%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £1,430 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 1555995372. Listed at 17 retailers as of November 1, 2026, with a 176% 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
SymmetryGood
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 1555995372
Dimensions7.53 × 4.22 × 2.65 mm
L/W Ratio1.78
Key to symbols
Feather, Crystal
Top View
7.53 mm4.22 mm0.50 ctH / SI2
OriginNatural
CutExcellent
PolishVery Good
SymmetryGood
FluorescenceFaint
CertificateGIA 1555995372
Side View
Table 57.0%CrownGirdle: THK-ETKPavilionCulet: NoneDepth 62.8%

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: £1,430 GBP|Low: £372 GBP|High: £1,430 GBP|Avg: £597 GBP|+3.6%
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 5£382 GBP
Retailer 4£420 GBP
Retailer 15£456 GBP
Retailer 6£466 GBP
Retailer 9£474 GBP
Retailer 16£491 GBP
Retailer 17£491 GBP
Retailer 3£526 GBP
Retailer 14£526 GBP
Retailer 2£545 GBP
Retailer 7£552 GBP
Retailer 8£554 GBP
Retailer 11£561 GBP
Retailer 13£571 GBP
Retailer 10£672 GBP
Retailer 12£1,053 GBP
NZ Jewellers£1,430 GBP

28 data points across 17 retailers

17 retailers£382 GBP to £1,053 GBP

A
Cheapest Retailer
-
£382 GBP
HK$4,000 HKD
B+
Retailer 2
-
£420 GBP
$563 USD
View
Final sale: no returns
A
Retailer 3
-
£456 GBP
$611 USD
View
A
Retailer 4
-
£466 GBP
$625 USD
View
B+
Retailer 5
-
£474 GBP
SGD 859 SGD
View
B+
Retailer 6
-
£491 GBP
$658 USD
View
B+
Retailer 7
-
£491 GBP
$658 USD
View
B+
Retailer 8
-
£526 GBP
$705 USD
View
Retailer 9
-
£526 GBP
$705 USD
View
Price last confirmed 14 days ago
B+
Retailer 10
-
£545 GBP
View
B+
Retailer 11
-
£552 GBP
$740 USD
View
B+
Retailer 12
-
£554 GBP
$743 USD
View
B+
Retailer 13
-
£561 GBP
View
B+
Retailer 14
-
£571 GBP
View
B+
Retailer 15
-
£672 GBP
€858 EUR
View
B
Retailer 16
-
£1,053 GBP
View
Most Expensive
NZ Jewellers
49ef68ae-4073-441a-9b07-0f67b322082c · Oct 30
£1,430 GBP
$1,916 USD
View
Price under review
16 more retailers have this diamond
Prices start from £382 GBPSave up to £671 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
£382 GBP