Marquise|Natural|GIA

1.00ct E SI1 Marquise Natural Diamond

EX • E/SI1 • GIA 5546556292

Certificate GIA 5546556292

Diamond specifications and retailer prices

From £1,997 GBP
As of November 4, 2026
Save £2,480 GBP (55%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £4,664 GBP at NZ Jewellers · As of October 17, 2026
View at NZ Jewellers

About this 1ct natural marquise diamond

This 1ct natural marquise sits in the classic one-carat band, graded E 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 5546556292. Listed at 16 retailers as of November 2, 2026, with a 124% 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

1.00
Carat
E
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryGood
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 5546556292
Dimensions10.00 × 5.00 × 3.18 mm
L/W Ratio2.00
Key to symbols
Crystal, Feather, Needle, Pinpoint
Top View
10.00 mm5.00 mm1.00 ctE / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryGood
FluorescenceNone
CertificateGIA 5546556292
Side View
Table 61.0%CrownGirdle: THK-XTKPavilionCulet: NoneDepth 63.6%

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: £2,779 GBP|Low: £1,978 GBP|High: £4,531 GBP|Avg: £2,671 GBP
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 6£1,997 GBP
Retailer 5£2,003 GBP
Retailer 2£2,126 GBP
Retailer 3£2,355 GBP
Retailer 10£2,537 GBP
Retailer 8£2,589 GBP
Retailer 1£2,779 GBP
Retailer 11£2,867 GBP
Retailer 4£2,936 GBP
Retailer 9£3,129 GBP
Retailer 7£4,477 GBP

34 data points across 11 retailers

16 retailers£1,997 GBP to £4,477 GBP

A
Cheapest Retailer
-
£1,997 GBP
A
Retailer 2
-
£2,003 GBP
View
A
Retailer 3
-
£2,126 GBP
View
Final sale: no returns
A
Retailer 4
-
£2,233 GBP
View
A
Retailer 5
-
£2,355 GBP
View
B+
Retailer 6
-
£2,537 GBP
View
B+
Retailer 7
-
£2,537 GBP
View
Retailer 8
-
£2,589 GBP
View
Price last confirmed 14 days ago
Retailer 9
-
£2,677 GBP
View
Price last confirmed 19 days ago
B+
Retailer 10
-
£2,779 GBP
View
Retailer 11
-
£2,780 GBP
View
Price last confirmed 20 days ago
Retailer 12
-
£2,867 GBP
View
Price last confirmed 29 days ago
B+
Retailer 13
-
£2,936 GBP
View
B
Retailer 14
-
£3,760 GBP
View
B
Retailer 15
-
£4,477 GBP
View
Most Expensive
NZ Jewellers
989b9f8a-e277-426e-bb93-b5b6615f835e · Oct 17
£4,664 GBP
$6,277 USD
View
Price last confirmed 19 days ago
15 more retailers have this diamond
Prices start from £1,997 GBPSave up to £2,480 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
£1,997 GBP