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Marquise|Natural|GIA

1.00ct M SI1 Marquise Natural Diamond

ID • M/SI1 • GIA 7531573401

Certificate GIA 7531573401

Diamond specifications and retailer prices

From £993 GBP
As of November 2, 2026
Save £1,459 GBP (59%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: £2,453 GBP at NZ Jewellers · As of November 3, 2026
View at NZ Jewellers

About this 1ct natural marquise diamond

This 1ct natural marquise sits in the classic one-carat band, graded M colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 7531573401. Listed at 7 retailers as of November 2, 2026, with prices from £993 to £2,453, a £1,459 spread on the same certified stone. NZ Jewellers lists it at £2,453. 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
M
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceStrong
Crown angle38.36°
Pavilion angle42.02°
OriginNatural
Grading LabGIA
CertificateGIA 7531573401
Dimensions9.47 × 5.17 × 3.49 mm
L/W Ratio1.83
Girdle conditionExtremely Thick
Key to symbols
Feather, Crystal, Cloud, Pinpoint, Natural
Top View
9.47 mm5.17 mm1.00 ctM / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceStrong
CertificateGIA 7531573401
Side View
Table 57.0%Crown 38.36°GirdlePavilion 42.02°CuletDepth 67.5%

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 2
Current: £2,453 GBP|Low: £993 GBP|High: £2,559 GBP|Avg: £1,284 GBP|-4.2%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 3£993 GBP
Retailer 7£1,003 GBP
Retailer 6£1,005 GBP
Retailer 4£1,052 GBP
Retailer 5£1,085 GBP
Retailer 2£1,117 GBP
NZ Jewellers£2,453 GBP

43 data points across 7 retailers

7 retailers£993 GBP to £2,453 GBP

A
Cheapest Retailer
-
£993 GBP
A
Retailer 2
-
£1,003 GBP
View
B+
Retailer 3
-
£1,005 GBP
View
B+
Retailer 4
-
£1,052 GBP
View
B+
Retailer 5
-
£1,085 GBP
View
B+
Retailer 6
-
£1,117 GBP
View
Most Expensive
C
NZ Jewellers
736a8f6b-b1e8-4847-8089-ddd1431f6333 · Nov 3
£2,453 GBP
$3,301 USD
View
6 more retailers have this diamond
Prices start from £993 GBPSave up to £1,459 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
£993 GBP