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Marquise|Natural|GIA

0.50ct I SI1 Marquise Natural Diamond

GD • I/SI1 • GIA 7553392469

Certificate GIA 7553392469

Diamond specifications and retailer prices

From £377 GBP
As of November 6, 2026
Save £749 GBP (67%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: £1,531 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 I colour (near-colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 7553392469. Listed at 21 retailers as of November 4, 2026, with a 199% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

0.50
Carat
I
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryGood
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 7553392469
Dimensions8.57 × 3.98 × 2.55 mm
L/W Ratio2.15
Girdle conditionPolished
Key to symbols
Feather
Top View
8.57 mm3.98 mm0.50 ctI / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryGood
FluorescenceNone
CertificateGIA 7553392469
Side View
Table 61.0%CrownGirdle: STK-ETKPavilionCulet: NoneDepth 64.1%

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: £1,531 GBP|Low: £377 GBP|High: £1,531 GBP|Avg: £640 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
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
November 6, 2026
Retailer 2£377 GBP
Retailer 12£411 GBP
Retailer 8£450 GBP
Retailer 3£488 GBP
Retailer 11£488 GBP
Retailer 4£507 GBP
Retailer 14£507 GBP
Retailer 20£560 GBP
Retailer 19£563 GBP
Retailer 10£564 GBP
Retailer 7£584 GBP
Retailer 6£586 GBP
Retailer 13£595 GBP
Retailer 15£595 GBP
Retailer 5£628 GBP
Retailer 9£699 GBP
Retailer 18£713 GBP
Retailer 16£753 GBP
Retailer 17£1,125 GBP
NZ Jewellers£1,531 GBP

23 data points across 20 retailers

21 retailers£377 GBP to £1,125 GBP

A
Cheapest Retailer
-
£377 GBP
B+
Retailer 2
-
£411 GBP
View
B+
Retailer 3
-
£450 GBP
View
Final sale: no returns
B+
Retailer 4
-
£488 GBP
View
Retailer 5
-
£488 GBP
View
Price last confirmed 8 days ago
B+
Retailer 6
-
£507 GBP
View
B+
Retailer 7
-
£507 GBP
View
B
Retailer 8
-
£560 GBP
View
B
Retailer 9
-
£563 GBP
View
B
Retailer 10
-
£564 GBP
View
B
Retailer 11
-
£584 GBP
View
B
Retailer 12
-
£586 GBP
View
B
Retailer 13
-
£595 GBP
View
B
Retailer 14
-
£595 GBP
View
B
Retailer 15
-
£628 GBP
View
B
Retailer 16
-
£699 GBP
View
B
Retailer 17
-
£713 GBP
View
Retailer 18
-
£746 GBP
View
Price last confirmed 33 days ago
B
Retailer 19
-
£753 GBP
View
C
Retailer 20
-
£1,125 GBP
View
Most Expensive
NZ Jewellers
5e05bc2f-ce54-47b7-8cc2-c0bb59769797 · Nov 5
£1,531 GBP
$2,049 USD
View
Price under review
20 more retailers have this diamond
Prices start from £377 GBPSave up to £749 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
£377 GBP