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Marquise|Natural|GIA

0.50ct H SI1 Marquise Natural Diamond

EX • H/SI1 • GIA 6552995482

Certificate GIA 6552995482

Diamond specifications and retailer prices

From £439 GBP
As of November 6, 2026
Save £778 GBP (64%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £1,655 GBP at NZ Jewellers · As of November 5, 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 SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6552995482. Listed at 19 retailers as of November 4, 2026, with a 177% 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
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6552995482
Dimensions7.57 × 4.28 × 2.66 mm
L/W Ratio1.77
Key to symbols
Knot, Feather
Top View
7.57 mm4.28 mm0.50 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6552995482
Side View
Table 62.0%CrownGirdle: THK-ETKPavilionCulet: NoneDepth 62.1%

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 6
Current: £1,655 GBP|Low: £439 GBP|High: £1,655 GBP|Avg: £690 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
Retailer 18
November 6, 2026
Retailer 4£439 GBP
Retailer 7£487 GBP
Retailer 6£499 GBP
Retailer 12£527 GBP
Retailer 18£527 GBP
Retailer 3£530 GBP
Retailer 10£548 GBP
Retailer 14£548 GBP
Retailer 17£609 GBP
Retailer 8£613 GBP
Retailer 9£626 GBP
Retailer 2£644 GBP
Retailer 11£645 GBP
Retailer 5£661 GBP
Retailer 16£746 GBP
Retailer 13£814 GBP
Retailer 15£1,217 GBP
NZ Jewellers£1,655 GBP

29 data points across 18 retailers

19 retailers£439 GBP to £1,217 GBP

A
Cheapest Retailer
-
£439 GBP
B+
Retailer 2
-
£487 GBP
View
Final sale: no returns
Retailer 3
-
£499 GBP
View
Price last confirmed 19 days ago
Retailer 4
-
£527 GBP
View
Price last confirmed 8 days ago
B+
Retailer 5
-
£527 GBP
View
B+
Retailer 6
-
£530 GBP
View
B+
Retailer 7
-
£548 GBP
View
Retailer 8
-
£548 GBP
View
Price last confirmed 11 days ago
B+
Retailer 9
-
£609 GBP
View
B
Retailer 10
-
£613 GBP
View
B
Retailer 11
-
£626 GBP
View
B
Retailer 12
-
£644 GBP
View
B
Retailer 13
-
£645 GBP
View
B+
Retailer 14
-
£661 GBP
View
B
Retailer 15
-
£746 GBP
View
B
Retailer 16
-
£814 GBP
View
Retailer 17
-
£820 GBP
View
Price last confirmed 32 days ago
B
Retailer 18
-
£1,217 GBP
View
Most Expensive
NZ Jewellers
066a1844-24b9-4b27-9082-379cd62d046c · Nov 5
£1,655 GBP
$2,215 USD
View
Price under review
18 more retailers have this diamond
Prices start from £439 GBPSave up to £778 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