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Marquise|Natural|GIA

1.01ct L SI1 Marquise Natural Diamond

EX • L/SI1 • GIA 6551728290

Certificate GIA 6551728290

Diamond specifications and retailer prices

From £856 GBP
As of November 4, 2026
Save £722 GBP (46%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £2,819 GBP at NZ Jewellers · As of October 30, 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 L 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 6551728290. Listed at 16 retailers as of November 2, 2026, with a 84% 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

1.01
Carat
L
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6551728290
Dimensions11.18 × 4.96 × 3.15 mm
L/W Ratio2.25
Top View
11.18 mm4.96 mm1.01 ctL / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 6551728290
Side View
Table 60.0%CrownGirdlePavilionCulet: NDepth 63.5%

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 4
Current: £2,819 GBP|Low: £846 GBP|High: £2,985 GBP|Avg: £1,391 GBP|-5.6%
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
November 2, 2026
Retailer 10£856 GBP
Retailer 6£1,071 GBP
Retailer 2£1,127 GBP
Retailer 5£1,149 GBP
Retailer 4£1,155 GBP
Retailer 14£1,155 GBP
Retailer 3£1,209 GBP
Retailer 15£1,219 GBP
Retailer 13£1,256 GBP
Retailer 8£1,283 GBP
Retailer 7£1,334 GBP
Retailer 9£1,402 GBP
Retailer 11£1,410 GBP
Retailer 12£1,578 GBP
NZ Jewellers£2,819 GBP

27 data points across 15 retailers

16 retailers£856 GBP to £1,578 GBP

A
Cheapest Retailer
-
£856 GBP
B+
Retailer 2
-
£1,071 GBP
View
B+
Retailer 3
-
£1,127 GBP
View
B+
Retailer 4
-
£1,149 GBP
View
Retailer 5
-
£1,155 GBP
View
Price last confirmed 8 days ago
B+
Retailer 6
-
£1,155 GBP
View
Retailer 7
-
£1,201 GBP
View
Price last confirmed 21 days ago
Retailer 8
-
£1,209 GBP
View
Price last confirmed 8 days ago
B+
Retailer 9
-
£1,219 GBP
View
B+
Retailer 10
-
£1,256 GBP
View
B+
Retailer 11
-
£1,283 GBP
View
B+
Retailer 12
-
£1,334 GBP
View
B
Retailer 13
-
£1,402 GBP
View
B
Retailer 14
-
£1,410 GBP
View
B
Retailer 15
-
£1,578 GBP
View
Most Expensive
B
NZ Jewellers
e4cbce56-db9e-40c8-8d3e-4def05aae091 · Oct 30
£2,819 GBP
$3,794 USD
View
Price last confirmed 7 days ago
15 more retailers have this diamond
Prices start from £856 GBPSave up to £722 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
1.01ct Marquise
£856 GBP