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Marquise|Natural|GIA

0.50ct G SI1 Marquise Natural Diamond

EX • G/SI1 • GIA 1568001181

Certificate GIA 1568001181

Diamond specifications and retailer prices

From £439 GBP
HK$4,600 HKD
As of November 1, 2026
Save £768 GBP (64%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £1,629 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 top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1568001181. Listed at 19 retailers as of October 29, 2026, with a 175% 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
G
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 1568001181
Dimensions8.58 × 3.78 × 2.45 mm
L/W Ratio2.27
Key to symbols
Twinning Wisp, Feather
Top View
8.58 mm3.78 mm0.50 ctG / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceMedium
CertificateGIA 1568001181
Side View
Table 60.0%CrownGirdle: THK-ETKPavilionCulet: NoneDepth 64.9%

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 1
Current: £1,629 GBP|Low: £420 GBP|High: £1,629 GBP|Avg: £671 GBP|+3.8%
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 4£439 GBP
Retailer 6£479 GBP
Retailer 15£519 GBP
Retailer 17£519 GBP
Retailer 3£522 GBP
Retailer 16£540 GBP
Retailer 8£540 GBP
Retailer 9£599 GBP
Retailer 14£599 GBP
Retailer 7£606 GBP
Retailer 10£636 GBP
Retailer 2£638 GBP
Retailer 5£652 GBP
Retailer 11£739 GBP
Retailer 12£802 GBP
Retailer 13£1,207 GBP
NZ Jewellers£1,629 GBP

28 data points across 17 retailers

19 retailers£439 GBP to £1,207 GBP

A
Cheapest Retailer
-
£439 GBP
HK$4,600 HKD
A
Retailer 2
-
£479 GBP
$643 USD
View
Final sale: no returns
A
Retailer 3
-
£519 GBP
$697 USD
View
A
Retailer 4
-
£519 GBP
$697 USD
View
A
Retailer 5
-
£522 GBP
$700 USD
View
B+
Retailer 6
-
£540 GBP
$724 USD
View
B+
Retailer 7
-
£540 GBP
SGD 979 SGD
View
Retailer 8
-
£599 GBP
$804 USD
View
Price last confirmed 15 days ago
B+
Retailer 9
-
£599 GBP
$804 USD
View
B+
Retailer 10
-
£606 GBP
$813 USD
View
B+
Retailer 11
-
£636 GBP
View
B+
Retailer 12
-
£638 GBP
View
B+
Retailer 13
-
£652 GBP
$875 USD
View
Retailer 14
-
£697 GBP
View
Price last confirmed 40 days ago
B+
Retailer 15
-
£739 GBP
€944 EUR
View
B
Retailer 16
-
£802 GBP
ZAR 17,384 ZAR
View
Retailer 17
-
£810 GBP
A$1,672 AUD
View
Price last confirmed 29 days ago
B
Retailer 18
-
£1,207 GBP
View
Most Expensive
NZ Jewellers
94121af3-7a34-4753-ae90-d186f36a342f · Oct 30
£1,629 GBP
$2,186 USD
View
Price under review
18 more retailers have this diamond
Prices start from £439 GBPSave up to £768 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
£439 GBP