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Marquise|Natural|GIA

1.00ct K SI2 Marquise Natural Diamond

GD • K/SI2 • GIA 5503201950

Certificate GIA 5503201950

Diamond specifications and retailer prices

From £1,230 GBP
As of November 6, 2026
Save £2,325 GBP (65%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £3,554 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 SI2 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 5503201950. Listed at 16 retailers as of November 5, 2026, with prices from £1,230 to £3,554, a £2,325 spread on the same certified stone. NZ Jewellers lists it at £3,554. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.00
Carat
K
Colour
SI2
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 5503201950
Dimensions10.24 × 5.16 × 3.01 mm
L/W Ratio1.98
Top View
10.24 mm5.16 mm1.00 ctK / SI2
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5503201950
Side View
Table 59.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 58.3%

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 6
Current: £3,554 GBP|Low: £1,230 GBP|High: £3,597 GBP|Avg: £1,927 GBP|-1.2%
NZ Jewellers
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
Retailer 15
November 6, 2026
Retailer 2£1,230 GBP
Retailer 13£1,245 GBP
Retailer 4£1,491 GBP
Retailer 12£1,536 GBP
Retailer 7£1,559 GBP
Retailer 14£1,560 GBP
Retailer 15£1,700 GBP
Retailer 9£1,730 GBP
Retailer 8£1,739 GBP
Retailer 3£1,779 GBP
Retailer 11£1,849 GBP
Retailer 5£1,961 GBP
Retailer 10£2,024 GBP
Retailer 6£2,130 GBP
NZ Jewellers£3,554 GBP

30 data points across 15 retailers

16 retailers£1,230 GBP to £3,554 GBP

A
Cheapest Retailer
-
£1,230 GBP
B+
Retailer 2
-
£1,245 GBP
View
B+
Retailer 3
-
£1,491 GBP
View
B+
Retailer 4
-
£1,536 GBP
View
B+
Retailer 5
-
£1,559 GBP
View
B+
Retailer 6
-
£1,560 GBP
View
B
Retailer 7
-
£1,700 GBP
View
Retailer 8
-
£1,721 GBP
View
Price last confirmed 8 days ago
B
Retailer 9
-
£1,730 GBP
View
B+
Retailer 10
-
£1,739 GBP
View
B
Retailer 11
-
£1,779 GBP
View
B
Retailer 12
-
£1,849 GBP
View
B
Retailer 13
-
£1,961 GBP
View
B
Retailer 14
-
£2,024 GBP
View
B
Retailer 15
-
£2,242 GBP
View
Most Expensive
C
NZ Jewellers
c6fab4a4-2841-4c51-b02b-d928c63184ae · Nov 5
£3,554 GBP
$4,784 USD
View
15 more retailers have this diamond
Prices start from £1,230 GBPSave up to £2,325 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
£1,230 GBP