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Marquise|Natural|GIA

1.00ct M SI2 Marquise Natural Diamond

M/SI2 • GIA 1242116052

Certificate GIA 1242116052

Diamond specifications and retailer prices

From £1,205 GBP
As of November 5, 2026
Save £1,734 GBP (59%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: £2,939 GBP at NZ Jewellers · As of November 5, 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 SI2 clarity (slightly-included) and certified by GIA 1242116052. Listed at 6 retailers as of November 5, 2026, with prices from £1,205 to £2,939, a £1,734 spread on the same certified stone. NZ Jewellers lists it at £2,939. 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

1.00
Carat
M
Colour
SI2
Clarity
-
Cut

Specifications

Cut
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1242116052
Dimensions9.52 × 5.26 × 3.27 mm
L/W Ratio1.81
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather, Needle
Top View
9.52 mm5.26 mm1.00 ctM / SI2
OriginNatural
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 1242116052
Side View
Table 58.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 62.1%

Caratlytics Score

How it works →
B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: £2,939 GBP|Low: £1,205 GBP|High: £2,939 GBP|Avg: £1,669 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 6, 2026
Retailer 5£1,205 GBP
Retailer 4£1,261 GBP
Retailer 2£1,265 GBP
Retailer 6£1,391 GBP
Retailer 3£1,640 GBP
NZ Jewellers£2,939 GBP

8 data points across 6 retailers

6 retailers£1,205 GBP to £2,939 GBP

B
Cheapest Retailer
-
£1,205 GBP
B
Retailer 2
-
£1,261 GBP
View
B
Retailer 3
-
£1,265 GBP
View
B
Retailer 4
-
£1,391 GBP
View
B
Retailer 5
-
£1,640 GBP
View
Most Expensive
C
NZ Jewellers
4b03bb55-fdca-49a4-aa86-a62b70e2df73 · Nov 5
£2,939 GBP
$3,956 USD
View
5 more retailers have this diamond
Prices start from £1,205 GBPSave up to £1,734 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
1.00ct Marquise
£1,205 GBP