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Marquise|Natural|GIA

0.50ct I SI2 Marquise Natural Diamond

EX • I/SI2 • GIA 1569290395

Certificate GIA 1569290395

Diamond specifications and retailer prices

From £367 GBP
$493 USD
As of November 2, 2026
Save £882 GBP (71%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: £1,250 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 I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1569290395. Listed at 7 retailers as of October 30, 2026, with prices from £367 to £1,250, a £882 spread on the same certified stone. NZ Jewellers lists it at £1,250. 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
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1569290395
Dimensions8.25 × 4.02 × 2.62 mm
L/W Ratio2.05
Top View
8.25 mm4.02 mm0.50 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1569290395
Side View
Table 58.0%CrownGirdlePavilionCulet: NoneDepth 65.2%

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 2
Current: £1,250 GBP|Low: £367 GBP|High: £1,418 GBP|Avg: £609 GBP|-11.9%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 2, 2026
Retailer 5£367 GBP
Retailer 4£429 GBP
Retailer 2£476 GBP
Retailer 7£496 GBP
Retailer 3£500 GBP
Retailer 6£526 GBP
NZ Jewellers£1,250 GBP

35 data points across 7 retailers

7 retailers£367 GBP to £1,250 GBP

A
Cheapest Retailer
-
£367 GBP
$493 USD
Final sale: no returns
A
Retailer 2
-
£429 GBP
$576 USD
View
B+
Retailer 3
-
£476 GBP
View
B+
Retailer 4
-
£496 GBP
$666 USD
View
B+
Retailer 5
-
£500 GBP
View
B+
Retailer 6
-
£526 GBP
$706 USD
View
Most Expensive
B
NZ Jewellers
4f134632-53d8-43dd-bacb-b6986358acba · Oct 30
£1,250 GBP
$1,677 USD
View
6 more retailers have this diamond
Prices start from £367 GBPSave up to £882 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
£367 GBP