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Marquise|Natural|GIA

0.50ct D SI1 Marquise Natural Diamond

EX • D/SI1 • GIA 2546733758

Certificate GIA 2546733758

Diamond specifications and retailer prices

From £486 GBP
HK$5,100 HKD
As of November 1, 2026
Save £718 GBP (60%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: £2,063 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 D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2546733758. Listed at 20 retailers as of November 1, 2026, with a 148% 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
D
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2546733758
Dimensions9.19 × 4.04 × 2.34 mm
L/W Ratio2.27
Top View
9.19 mm4.04 mm0.50 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2546733758
Side View
Table 59.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 58.0%

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: £807 GBP|Low: £486 GBP|High: £1,219 GBP|Avg: £807 GBP|-1.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 2, 2026
Retailer 4£486 GBP
Retailer 12£587 GBP
Retailer 9£607 GBP
Retailer 10£666 GBP
Retailer 3£683 GBP
Retailer 6£762 GBP
Retailer 11£775 GBP
Retailer 1£807 GBP
Retailer 5£927 GBP
Retailer 2£989 GBP
Retailer 8£1,015 GBP
Retailer 7£1,205 GBP

38 data points across 12 retailers

20 retailers£486 GBP to £1,205 GBP

A
Cheapest Retailer
-
£486 GBP
HK$5,100 HKD
A
Retailer 2
-
£587 GBP
$788 USD
View
B+
Retailer 3
-
£607 GBP
$815 USD
View
Final sale: no returns
B+
Retailer 4
-
£658 GBP
$883 USD
View
B+
Retailer 5
-
£658 GBP
$883 USD
View
B+
Retailer 6
-
£666 GBP
$894 USD
View
B+
Retailer 7
-
£682 GBP
SGD 1,237 SGD
View
B+
Retailer 8
-
£683 GBP
$917 USD
View
B+
Retailer 9
-
£757 GBP
$1,016 USD
View
B+
Retailer 10
-
£759 GBP
$1,019 USD
View
B+
Retailer 11
-
£762 GBP
View
B+
Retailer 12
-
£775 GBP
$1,040 USD
View
B+
Retailer 13
-
£807 GBP
View
B+
Retailer 14
-
£856 GBP
A$1,768 AUD
View
B+
Retailer 15
-
£872 GBP
$1,170 USD
View
B+
Retailer 16
-
£927 GBP
€1,185 EUR
View
Retailer 17
-
£989 GBP
A$2,042 AUD
View
Price last confirmed 28 days ago
B
Retailer 18
-
£1,015 GBP
ZAR 22,013 ZAR
View
B
Retailer 19
-
£1,205 GBP
View
Most Expensive
NZ Jewellers
e75d2e8f-8754-4b98-8c74-b82cbab82265 · Oct 30
£2,063 GBP
$2,768 USD
View
Price under review
19 more retailers have this diamond
Prices start from £486 GBPSave up to £718 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
£486 GBP