Marquise|Natural|GIA

0.50ct H SI1 Marquise Natural Diamond

EX • H/SI1 • GIA 7542349997

Certificate GIA 7542349997

Diamond specifications and retailer prices

From £470 GBP
As of November 6, 2026
Save £643 GBP (58%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: £1,910 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 7542349997. Listed at 24 retailers as of November 4, 2026, with a 137% 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
PolishVery Good
SymmetryGood
FluorescenceNone
Pavilion angle38.8°
OriginNatural
Grading LabGIA
CertificateGIA 7542349997
Dimensions7.99 × 4.10 × 2.54 mm
L/W Ratio1.95
Girdle conditionFaceted
Top View
7.99 mm4.10 mm0.50 ctH / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryGood
FluorescenceNone
CertificateGIA 7542349997
Side View
Table 57.0%CrownGirdle: THN-VTKPavilion 38.8°Culet: NoneDepth 62.0%

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: £725 GBP|Low: £470 GBP|High: £1,129 GBP|Avg: £723 GBP|+5.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 11£470 GBP
Retailer 5£521 GBP
Retailer 9£548 GBP
Retailer 4£551 GBP
Retailer 2£573 GBP
Retailer 3£574 GBP
Retailer 10£684 GBP
Retailer 1£725 GBP
Retailer 8£858 GBP
Retailer 12£915 GBP
Retailer 6£939 GBP
Retailer 7£1,113 GBP

46 data points across 12 retailers

24 retailers£470 GBP to £1,113 GBP

A
Cheapest Retailer
-
£470 GBP
Final sale: no returns
B+
Retailer 2
-
£507 GBP
View
B+
Retailer 3
-
£521 GBP
View
B+
Retailer 4
-
£548 GBP
View
Retailer 5
-
£551 GBP
View
Price last confirmed 8 days ago
B+
Retailer 6
-
£551 GBP
View
B+
Retailer 7
-
£557 GBP
View
B+
Retailer 8
-
£560 GBP
View
B+
Retailer 9
-
£573 GBP
View
B+
Retailer 10
-
£574 GBP
View
B
Retailer 11
-
£631 GBP
View
B
Retailer 12
-
£637 GBP
View
B
Retailer 13
-
£680 GBP
View
B
Retailer 14
-
£680 GBP
View
B
Retailer 15
-
£680 GBP
View
B
Retailer 16
-
£684 GBP
View
B
Retailer 17
-
£702 GBP
View
B
Retailer 18
-
£725 GBP
View
B
Retailer 19
-
£858 GBP
View
Retailer 20
-
£915 GBP
View
Price last confirmed 33 days ago
B
Retailer 21
-
£939 GBP
View
B
Retailer 22
-
£979 GBP
View
B
Retailer 23
-
£1,113 GBP
View
Most Expensive
NZ Jewellers
155a80ee-2bbc-416d-afa0-363496a1653f · Nov 5
£1,910 GBP
$2,556 USD
View
Price under review
23 more retailers have this diamond
Prices start from £470 GBPSave up to £643 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
£470 GBP