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Marquise|Natural|GIA

1.00ct H SI2 Marquise Natural Diamond

ID • H/SI2 • GIA 5242062946

Certificate GIA 5242062946

Diamond specifications and retailer prices

From £1,501 GBP
As of November 6, 2026
Save £1,993 GBP (57%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £4,197 GBP at NZ Jewellers · As of September 30, 2026
View at NZ Jewellers

About this 1ct natural marquise diamond

This 1ct natural marquise sits in the classic one-carat band, graded H 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 5242062946. Listed at 16 retailers as of November 4, 2026, with a 133% 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

1.00
Carat
H
Colour
SI2
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 5242062946
Dimensions9.79 × 5.21 × 3.30 mm
L/W Ratio1.88
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather, Twinning Wisp, Needle, Indented Natural, Natural
Top View
9.79 mm5.21 mm1.00 ctH / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 5242062946
Side View
Table 58.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 63.4%

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: £2,091 GBP|Low: £1,501 GBP|High: £3,657 GBP|Avg: £2,420 GBP
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 10£1,501 GBP
Retailer 6£1,761 GBP
Retailer 3£1,845 GBP
Retailer 12£1,845 GBP
Retailer 4£1,869 GBP
Retailer 1£2,091 GBP
Retailer 5£2,103 GBP
Retailer 11£2,105 GBP
Retailer 9£2,174 GBP
Retailer 8£2,486 GBP
Retailer 7£3,493 GBP
Retailer 2£3,657 GBP

43 data points across 12 retailers

16 retailers£1,501 GBP to £3,493 GBP

A
Cheapest Retailer
-
£1,501 GBP
A
Retailer 2
-
£1,761 GBP
View
A
Retailer 3
-
£1,845 GBP
View
Final sale: no returns
B+
Retailer 4
-
£1,869 GBP
View
Retailer 5
-
£2,007 GBP
View
Price last confirmed 25 days ago
Retailer 6
-
£2,007 GBP
View
Price last confirmed 29 days ago
Retailer 7
-
£2,085 GBP
View
Price last confirmed 36 days ago
B+
Retailer 8
-
£2,091 GBP
View
B+
Retailer 9
-
£2,103 GBP
View
B+
Retailer 10
-
£2,105 GBP
View
B+
Retailer 11
-
£2,174 GBP
View
Retailer 12
-
£2,317 GBP
View
Price last confirmed 28 days ago
B+
Retailer 13
-
£2,486 GBP
View
B
Retailer 14
-
£3,493 GBP
View
Retailer 15
-
£3,657 GBP
View
Price last confirmed 9 days ago
Most Expensive
NZ Jewellers
0c93b034-b987-48d2-a064-82a595b514b4 · Sep 30
£4,197 GBP
$5,618 USD
View
Price last confirmed 37 days ago
15 more retailers have this diamond
Prices start from £1,501 GBPSave up to £1,993 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
1.00ct Marquise
£1,501 GBP