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Marquise|Natural|GIA

1.00ct K SI1 Marquise Natural Diamond

EX • K/SI1 • GIA 1565284218

Certificate GIA 1565284218

Diamond specifications and retailer prices

From £1,509 GBP
As of November 5, 2026
Save £1,765 GBP (54%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £3,275 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 K 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 1565284218. Listed at 11 retailers as of November 5, 2026, with prices from £1,509 to £3,275, a £1,765 spread on the same certified stone. NZ Jewellers lists it at £3,275. 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
K
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1565284218
Dimensions9.75 × 5.27 × 3.29 mm
L/W Ratio1.85
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather
Top View
9.75 mm5.27 mm1.00 ctK / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 1565284218
Side View
Table 60.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 62.5%

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 5
Current: £3,275 GBP|Low: £1,509 GBP|High: £3,275 GBP|Avg: £1,957 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 3£1,509 GBP
Retailer 2£1,519 GBP
Retailer 8£1,566 GBP
Retailer 10£1,566 GBP
Retailer 11£1,638 GBP
Retailer 5£1,691 GBP
Retailer 9£1,807 GBP
Retailer 6£1,911 GBP
Retailer 4£2,127 GBP
Retailer 7£2,736 GBP
NZ Jewellers£3,275 GBP

31 data points across 11 retailers

11 retailers£1,509 GBP to £3,275 GBP

B+
Cheapest Retailer
-
£1,509 GBP
A
Retailer 2
-
£1,519 GBP
View
B+
Retailer 3
-
£1,566 GBP
View
Retailer 4
-
£1,566 GBP
View
Price last confirmed 8 days ago
B+
Retailer 5
-
£1,638 GBP
View
B+
Retailer 6
-
£1,691 GBP
View
B+
Retailer 7
-
£1,807 GBP
View
B
Retailer 8
-
£1,911 GBP
View
B
Retailer 9
-
£2,127 GBP
View
B
Retailer 10
-
£2,736 GBP
View
Most Expensive
B
NZ Jewellers
217a42f4-c008-4506-814d-c2a88dac9aea · Nov 5
£3,275 GBP
$4,383 USD
View
10 more retailers have this diamond
Prices start from £1,509 GBPSave up to £1,765 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
£1,509 GBP