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Marquise|Natural|GIA

0.50ct H SI1 Marquise Natural Diamond

EX • H/SI1 • GIA 7568291301

Certificate GIA 7568291301

Diamond specifications and retailer prices

From £333 GBP
As of November 6, 2026
Save £1,095 GBP (77%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £1,428 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 7568291301. Listed at 19 retailers as of November 5, 2026, with prices from £333 to £1,428, a £1,095 spread on the same certified stone. NZ Jewellers lists it at £1,428. 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
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 7568291301
Dimensions7.82 × 4.20 × 2.54 mm
L/W Ratio1.86
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Cloud
Top View
7.82 mm4.20 mm0.50 ctH / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceFaint
CertificateGIA 7568291301
Side View
Table 59.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 60.5%

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: £1,428 GBP|Low: £333 GBP|High: £1,428 GBP|Avg: £602 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
November 6, 2026
Retailer 2£333 GBP
Retailer 8£420 GBP
Retailer 17£455 GBP
Retailer 9£463 GBP
Retailer 3£470 GBP
Retailer 7£490 GBP
Retailer 15£490 GBP
Retailer 18£525 GBP
Retailer 10£537 GBP
Retailer 6£554 GBP
Retailer 13£554 GBP
Retailer 12£556 GBP
Retailer 4£570 GBP
Retailer 5£598 GBP
Retailer 11£629 GBP
Retailer 19£672 GBP
Retailer 14£702 GBP
Retailer 16£1,051 GBP
NZ Jewellers£1,428 GBP

35 data points across 19 retailers

19 retailers£333 GBP to £1,428 GBP

A
Cheapest Retailer
-
£333 GBP
A
Retailer 2
-
£420 GBP
View
Final sale: no returns
A
Retailer 3
-
£455 GBP
View
B+
Retailer 4
-
£463 GBP
View
B+
Retailer 5
-
£470 GBP
View
Retailer 6
-
£490 GBP
View
Price last confirmed 8 days ago
B+
Retailer 7
-
£490 GBP
View
B+
Retailer 8
-
£525 GBP
View
B+
Retailer 9
-
£537 GBP
View
B+
Retailer 10
-
£554 GBP
View
B+
Retailer 11
-
£554 GBP
View
B+
Retailer 12
-
£556 GBP
View
B+
Retailer 13
-
£570 GBP
View
B+
Retailer 14
-
£598 GBP
View
B
Retailer 15
-
£629 GBP
View
B+
Retailer 16
-
£672 GBP
View
B
Retailer 17
-
£702 GBP
View
B
Retailer 18
-
£1,051 GBP
View
Most Expensive
B
NZ Jewellers
a362ba95-4f4a-44ce-83a0-e280e9ea586c · Nov 5
£1,428 GBP
$1,911 USD
View
18 more retailers have this diamond
Prices start from £333 GBPSave up to £1,095 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
£333 GBP