Marquise|Natural|GIA

0.50ct I SI1 Marquise Natural Diamond

EX • I/SI1 • GIA 7552995448

Certificate GIA 7552995448

Diamond specifications and retailer prices

From £430 GBP
As of November 6, 2026
Save £752 GBP (64%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: £1,655 GBP at NZ Jewellers · As of September 28, 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 top-tier cut grade stated by the retailer rather than the lab and certified by GIA 7552995448. Listed at 22 retailers as of November 2, 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
I
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 7552995448
Dimensions8.58 × 3.99 × 2.50 mm
L/W Ratio2.15
Key to symbols
Feather
Top View
8.58 mm3.99 mm0.50 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 7552995448
Side View
Table 56.0%CrownGirdle: THK-ETKPavilionCulet: NoneDepth 62.6%

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: £1,605 GBP|Low: £419 GBP|High: £1,655 GBP|Avg: £719 GBP|-3.0%
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
November 6, 2026
Retailer 14£430 GBP
Retailer 13£471 GBP
Retailer 5£484 GBP
Retailer 12£512 GBP
Retailer 7£527 GBP
Retailer 3£531 GBP
Retailer 4£590 GBP
Retailer 15£610 GBP
Retailer 2£625 GBP
Retailer 11£646 GBP
Retailer 9£725 GBP
Retailer 8£790 GBP
Retailer 6£793 GBP
Retailer 10£1,182 GBP
NZ Jewellers£1,605 GBP

42 data points across 15 retailers

22 retailers£430 GBP to £1,182 GBP

A
Cheapest Retailer
-
£430 GBP
B+
Retailer 2
-
£471 GBP
View
Final sale: no returns
Retailer 3
-
£484 GBP
View
Price last confirmed 19 days ago
Retailer 4
-
£512 GBP
View
Price last confirmed 17 days ago
Retailer 5
-
£512 GBP
View
Price last confirmed 21 days ago
Retailer 6
-
£527 GBP
View
Price last confirmed 44 days ago
Retailer 7
-
£527 GBP
View
Price last confirmed 47 days ago
Retailer 8
-
£531 GBP
View
Price last confirmed 21 days ago
Retailer 9
-
£531 GBP
View
Price last confirmed 10 days ago
Retailer 10
-
£590 GBP
View
Price last confirmed 16 days ago
Retailer 11
-
£609 GBP
View
Price last confirmed 38 days ago
Retailer 12
-
£609 GBP
View
Price last confirmed 45 days ago
B
Retailer 13
-
£610 GBP
View
B+
Retailer 14
-
£625 GBP
View
B
Retailer 15
-
£646 GBP
View
B
Retailer 16
-
£725 GBP
View
B
Retailer 17
-
£790 GBP
View
Retailer 18
-
£793 GBP
View
Price last confirmed 33 days ago
B
Retailer 19
-
£1,182 GBP
View
Retailer 20
-
£1,605 GBP
View
Price under review
Retailer 21
-
£1,655 GBP
View
Price under review
Most Expensive
NZ Jewellers
6790da7f-086b-474c-8ec5-a17ba74d5700 · Sep 28
£1,655 GBP
$2,215 USD
View
Price under review
21 more retailers have this diamond
Prices start from £430 GBPSave up to £752 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
£430 GBP