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Marquise|Natural|GIA

0.50ct D SI1 Marquise Natural Diamond

EX • D/SI1 • GIA 2546398602

Certificate GIA 2546398602

Diamond specifications and retailer prices

From £569 GBP
SGD 1,030 SGD
As of October 31, 2026
Save £855 GBP (60%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: £1,896 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 2546398602. Listed at 22 retailers as of October 31, 2026, with a 150% 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
PolishVery Good
SymmetryGood
FluorescenceNone
Pavilion angle41.1°
OriginNatural
Grading LabGIA
CertificateGIA 2546398602
Dimensions8.16 × 4.24 × 2.58 mm
L/W Ratio1.92
Top View
8.16 mm4.24 mm0.50 ctD / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryGood
FluorescenceNone
CertificateGIA 2546398602
Side View
Table 62.0%CrownGirdle: MED-THKPavilion 41.1°Culet: NoneDepth 60.7%

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: Oct 31
Current: £1,896 GBP|Low: £542 GBP|High: £1,896 GBP|Avg: £1,013 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 10£569 GBP
Retailer 11£650 GBP
Retailer 3£705 GBP
Retailer 13£731 GBP
Retailer 9£817 GBP
Retailer 5£875 GBP
Retailer 6£909 GBP
Retailer 2£1,008 GBP
Retailer 12£1,017 GBP
Retailer 8£1,200 GBP
Retailer 4£1,260 GBP
Retailer 7£1,424 GBP
NZ Jewellers£1,896 GBP

44 data points across 13 retailers

22 retailers£569 GBP to £1,424 GBP

A
Cheapest Retailer
-
£569 GBP
SGD 1,030 SGD
B+
Retailer 2
-
£650 GBP
$871 USD
View
Final sale: no returns
B+
Retailer 3
-
£696 GBP
$933 USD
View
B+
Retailer 4
-
£697 GBP
$934 USD
View
B+
Retailer 5
-
£701 GBP
A$1,445 AUD
View
B+
Retailer 6
-
£705 GBP
$944 USD
View
B+
Retailer 7
-
£705 GBP
$944 USD
View
B+
Retailer 8
-
£711 GBP
$953 USD
View
B+
Retailer 9
-
£731 GBP
$980 USD
View
B+
Retailer 10
-
£813 GBP
$1,089 USD
View
B
Retailer 11
-
£817 GBP
$1,095 USD
View
B
Retailer 12
-
£858 GBP
$1,150 USD
View
B
Retailer 13
-
£858 GBP
$1,150 USD
View
B
Retailer 14
-
£875 GBP
$1,172 USD
View
B
Retailer 15
-
£888 GBP
$1,190 USD
View
B
Retailer 16
-
£909 GBP
View
B
Retailer 17
-
£1,008 GBP
€1,286 EUR
View
Retailer 18
-
£1,017 GBP
A$2,096 AUD
View
Price last confirmed 29 days ago
B
Retailer 19
-
£1,200 GBP
ZAR 25,977 ZAR
View
B
Retailer 20
-
£1,260 GBP
CA$2,345 CAD
View
B
Retailer 21
-
£1,424 GBP
View
Most Expensive
NZ Jewellers
d6e4a16b-be2e-46e6-b827-23a2faa1cf14 · Oct 30
£1,896 GBP
$2,541 USD
View
Price under review
21 more retailers have this diamond
Prices start from £569 GBPSave up to £855 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
£569 GBP