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Marquise|Natural|GIA

1.00ct I SI1 Marquise Natural Diamond

EX • I/SI1 • GIA 6565660710

Certificate GIA 6565660710

Diamond specifications and retailer prices

From £1,842 GBP
As of November 1, 2026
Save £2,468 GBP (57%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £4,310 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 I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6565660710. Listed at 12 retailers as of November 1, 2026, with prices from £1,842 to £4,310, a £2,468 spread on the same certified stone. NZ Jewellers lists it at £4,310. 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
I
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6565660710
Dimensions10.11 × 5.14 × 3.25 mm
L/W Ratio1.97
Culet sizeNone
Key to symbols
Cloud, Crystal, Cavity, Feather, Needle
Top View
10.11 mm5.14 mm1.00 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6565660710
Side View
Table 60.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 63.3%

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 1
Current: £4,310 GBP|Low: £1,832 GBP|High: £4,310 GBP|Avg: £2,608 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 4, 2026
Retailer 8£1,842 GBP
Retailer 5£1,858 GBP
Retailer 3£1,963 GBP
Retailer 7£2,291 GBP
Retailer 4£2,409 GBP
Retailer 11£2,473 GBP
Retailer 10£2,569 GBP
Retailer 9£2,854 GBP
Retailer 2£2,856 GBP
Retailer 6£4,137 GBP
NZ Jewellers£4,310 GBP

8 data points across 11 retailers

12 retailers£1,842 GBP to £4,310 GBP

A
Cheapest Retailer
-
£1,842 GBP
A
Retailer 2
-
£1,858 GBP
View
B+
Retailer 3
-
£1,963 GBP
View
Final sale: no returns
B+
Retailer 4
-
£2,069 GBP
View
B+
Retailer 5
-
£2,291 GBP
View
B+
Retailer 6
-
£2,409 GBP
View
B+
Retailer 7
-
£2,473 GBP
View
B
Retailer 8
-
£2,569 GBP
View
B
Retailer 9
-
£2,854 GBP
View
B
Retailer 10
-
£2,856 GBP
View
B
Retailer 11
-
£4,137 GBP
View
Most Expensive
B
NZ Jewellers
1c69537c-7e7d-4c62-b597-c9dff015eeb5 · Nov 3
£4,310 GBP
$5,780 USD
View
11 more retailers have this diamond
Prices start from £1,842 GBPSave up to £2,468 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
£1,842 GBP