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Marquise|Natural|GIA

1.03ct K SI1 Marquise Natural Diamond

K/SI1 • GIA 1555772513

Certificate GIA 1555772513

Diamond specifications and retailer prices

From £1,380 GBP
As of November 6, 2026
Save £2,092 GBP (60%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: £3,472 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.03ct natural marquise diamond

This 1.03ct natural marquise sits in the classic one-carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included) and certified by GIA 1555772513. Listed at 5 retailers as of November 5, 2026, with prices from £1,380 to £3,472, a £2,092 spread on the same certified stone. NZ Jewellers lists it at £3,472. 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

1.03
Carat
K
Colour
SI1
Clarity
-
Cut

Specifications

Cut
PolishGood
SymmetryGood
FluorescenceStrong
OriginNatural
Grading LabGIA
CertificateGIA 1555772513
Dimensions9.66 × 5.20 × 3.42 mm
L/W Ratio1.86
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Twinning Wisp, Feather, Crystal, Cavity, Needle
Top View
9.66 mm5.20 mm1.03 ctK / SI1
OriginNatural
PolishGood
SymmetryGood
FluorescenceStrong
CertificateGIA 1555772513
Side View
Table 59.0%CrownGirdle: THK-ETKPavilionCulet: NoneDepth 65.7%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: £3,472 GBP|Low: £1,380 GBP|High: £3,472 GBP|Avg: £2,086 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 6, 2026
Retailer 2£1,380 GBP
Retailer 5£1,424 GBP
Retailer 4£1,489 GBP
Retailer 3£2,487 GBP
NZ Jewellers£3,472 GBP

16 data points across 5 retailers

5 retailers£1,380 GBP to £3,472 GBP

B+
Cheapest Retailer
-
£1,380 GBP
B+
Retailer 2
-
£1,424 GBP
View
B+
Retailer 3
-
£1,489 GBP
View
C
Retailer 4
-
£2,487 GBP
View
Most Expensive
C
NZ Jewellers
22dca734-e987-4622-a7f9-d55f4750ae2e · Nov 5
£3,472 GBP
$4,673 USD
View
4 more retailers have this diamond
Prices start from £1,380 GBPSave up to £2,092 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.

B+
1.03ct Marquise
£1,380 GBP