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Marquise|Natural|GIA

1.00ct I SI2 Marquise Natural Diamond

EX • I/SI2 • GIA 6552638482

Certificate GIA 6552638482

Diamond specifications and retailer prices

From £1,262 GBP
As of November 6, 2026
Save £2,246 GBP (64%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £3,508 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 I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6552638482. Listed at 15 retailers as of November 5, 2026, with prices from £1,262 to £3,508, a £2,246 spread on the same certified stone. NZ Jewellers lists it at £3,508. 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
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6552638482
Dimensions9.55 × 4.89 × 3.38 mm
L/W Ratio1.95
Culet sizeNone
Key to symbols
Feather, Crystal, Needle, Indented Natural
Top View
9.55 mm4.89 mm1.00 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6552638482
Side View
Table 63.0%CrownGirdle: XTKPavilionCulet: NoneDepth 69.1%

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: £3,508 GBP|Low: £1,262 GBP|High: £3,508 GBP|Avg: £1,914 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 10£1,262 GBP
Retailer 7£1,338 GBP
Retailer 4£1,548 GBP
Retailer 2£1,650 GBP
Retailer 3£1,678 GBP
Retailer 5£1,750 GBP
Retailer 12£1,756 GBP
Retailer 8£1,841 GBP
Retailer 11£1,936 GBP
Retailer 6£2,083 GBP
Retailer 9£2,939 GBP
NZ Jewellers£3,508 GBP

28 data points across 12 retailers

15 retailers£1,262 GBP to £3,508 GBP

A
Cheapest Retailer
-
£1,262 GBP
A
Retailer 2
-
£1,338 GBP
View
B+
Retailer 3
-
£1,531 GBP
View
B+
Retailer 4
-
£1,548 GBP
View
Final sale: no returns
A
Retailer 5
-
£1,650 GBP
View
A
Retailer 6
-
£1,678 GBP
View
B+
Retailer 7
-
£1,696 GBP
View
B+
Retailer 8
-
£1,750 GBP
View
B+
Retailer 9
-
£1,756 GBP
View
B+
Retailer 10
-
£1,834 GBP
View
B+
Retailer 11
-
£1,841 GBP
View
B+
Retailer 12
-
£1,936 GBP
View
B+
Retailer 13
-
£2,083 GBP
View
B
Retailer 14
-
£2,939 GBP
View
Most Expensive
B
NZ Jewellers
d60821ea-313c-472b-a024-58fc69bba7d5 · Nov 5
£3,508 GBP
$4,695 USD
View
14 more retailers have this diamond
Prices start from £1,262 GBPSave up to £2,246 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
£1,262 GBP