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Marquise|Natural|GIA

1.00ct D SI1 Marquise Natural Diamond

EX • D/SI1 • GIA 6545317133

Certificate GIA 6545317133

Diamond specifications and retailer prices

From £2,247 GBP
As of November 6, 2026
Save £2,688 GBP (54%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: £4,935 GBP at MOH London · As of November 2, 2026
View at MOH London

About this 1ct natural marquise diamond

This 1ct natural marquise sits in the classic one-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6545317133. Listed at 23 retailers as of November 2, 2026, with prices from £2,247 to £4,935, a £2,688 spread on the same certified stone. MOH London lists it at £4,935. 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
D
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6545317133
Dimensions11.15 × 4.92 × 3.16 mm
L/W Ratio2.27
Top View
11.15 mm4.92 mm1.00 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 6545317133
Side View
Table 60.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 64.1%

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 6
Current: £4,935 GBP|Low: £2,228 GBP|High: £4,995 GBP|Avg: £3,084 GBP|-1.2%
MOH London
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
November 6, 2026
Retailer 12£2,247 GBP
Retailer 2£2,329 GBP
Retailer 10£2,635 GBP
Retailer 4£2,641 GBP
Retailer 3£2,670 GBP
Retailer 5£2,724 GBP
Retailer 13£2,817 GBP
Retailer 7£2,836 GBP
Retailer 8£2,971 GBP
Retailer 6£3,060 GBP
Retailer 11£3,326 GBP
Retailer 9£3,602 GBP
Retailer 14£4,430 GBP
MOH London£4,935 GBP

28 data points across 14 retailers

23 retailers£2,247 GBP to £4,935 GBP

A
Cheapest Retailer
-
£2,247 GBP
A
Retailer 2
-
£2,329 GBP
View
A
Retailer 3
-
£2,635 GBP
View
B+
Retailer 4
-
£2,641 GBP
View
B+
Retailer 5
-
£2,670 GBP
View
B+
Retailer 6
-
£2,724 GBP
View
Final sale: no returns
B+
Retailer 7
-
£2,749 GBP
View
B+
Retailer 8
-
£2,817 GBP
View
B+
Retailer 9
-
£2,836 GBP
View
B+
Retailer 10
-
£2,941 GBP
View
Retailer 11
-
£2,963 GBP
View
Price last confirmed 36 days ago
Retailer 12
-
£2,963 GBP
View
Price last confirmed 29 days ago
Retailer 13
-
£2,963 GBP
View
Price last confirmed 29 days ago
B+
Retailer 14
-
£2,971 GBP
View
Retailer 15
-
£3,000 GBP
View
Price last confirmed 45 days ago
B+
Retailer 16
-
£3,060 GBP
View
Retailer 17
-
£3,174 GBP
View
Price last confirmed 29 days ago
B+
Retailer 18
-
£3,326 GBP
View
Retailer 19
-
£3,420 GBP
View
Price last confirmed 38 days ago
Retailer 20
-
£3,462 GBP
View
Price last confirmed 45 days ago
B+
Retailer 21
-
£3,602 GBP
View
Retailer 22
-
£4,430 GBP
View
Price last confirmed 9 days ago
Most Expensive
B
MOH London
89858AF2C · Nov 2
£4,935 GBP
View
22 more retailers have this diamond
Prices start from £2,247 GBPSave up to £2,688 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
£2,247 GBP