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Marquise|Natural|GIA

1.01ct M SI1 Marquise Natural Diamond

M/SI1 • GIA 1246113018

Certificate GIA 1246113018

Diamond specifications and retailer prices

From £1,265 GBP
As of November 6, 2026
Save £1,875 GBP (60%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £3,140 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.01ct natural marquise diamond

This 1.01ct natural marquise sits in the classic one-carat band, graded M colour (faint-tinted) and SI1 clarity (slightly-included) and certified by GIA 1246113018. Listed at 8 retailers as of November 5, 2026, with prices from £1,265 to £3,140, a £1,875 spread on the same certified stone. NZ Jewellers lists it at £3,140. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.01
Carat
M
Colour
SI1
Clarity
-
Cut

Specifications

Cut
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 1246113018
Dimensions10.73 × 5.22 × 3.19 mm
L/W Ratio2.06
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather, Pinpoint
Top View
10.73 mm5.22 mm1.01 ctM / SI1
OriginNatural
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1246113018
Side View
Table 56.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 61.0%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: £3,140 GBP|Low: £1,265 GBP|High: £3,140 GBP|Avg: £1,687 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 2£1,265 GBP
Retailer 6£1,288 GBP
Retailer 7£1,337 GBP
Retailer 5£1,346 GBP
Retailer 8£1,485 GBP
Retailer 3£1,571 GBP
Retailer 4£1,750 GBP
NZ Jewellers£3,140 GBP

8 data points across 8 retailers

8 retailers£1,265 GBP to £3,140 GBP

B+
Cheapest Retailer
-
£1,265 GBP
B
Retailer 2
-
£1,288 GBP
View
B
Retailer 3
-
£1,337 GBP
View
B
Retailer 4
-
£1,346 GBP
View
B
Retailer 5
-
£1,485 GBP
View
B
Retailer 6
-
£1,571 GBP
View
B
Retailer 7
-
£1,750 GBP
View
Most Expensive
C
NZ Jewellers
f40b4aa8-2697-459f-813d-b51bdf46c4ff · Nov 5
£3,140 GBP
$4,226 USD
View
7 more retailers have this diamond
Prices start from £1,265 GBPSave up to £1,875 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.

B+
1.01ct Marquise
£1,265 GBP