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Marquise|Natural|GIA

1.03ct H SI1 Marquise Natural Diamond

ID • H/SI1 • GIA 1559696271

Certificate GIA 1559696271

Diamond specifications and retailer prices

From £2,454 GBP
As of November 6, 2026
Save £2,162 GBP (47%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £4,616 GBP at NZ Jewellers · As of November 3, 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 H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1559696271. Listed at 8 retailers as of November 3, 2026, with prices from £2,454 to £4,616, a £2,162 spread on the same certified stone. NZ Jewellers lists it at £4,616. 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

1.03
Carat
H
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle34.28°
Pavilion angle39.09°
OriginNatural
Grading LabGIA
CertificateGIA 1559696271
Dimensions10.57 × 5.37 × 3.12 mm
L/W Ratio1.97
Girdle conditionVery Thick
Key to symbols
Crystal, Feather, Cloud, Needle
Top View
10.57 mm5.37 mm1.03 ctH / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1559696271
Side View
Table 62.0%Crown 34.28°Girdle: THK-VTKPavilion 39.09°Culet: NoneDepth 58.1%

Caratlytics Score

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

Price History

Last verified: Nov 6
Current: £4,616 GBP|Low: £2,454 GBP|High: £4,616 GBP|Avg: £3,088 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 2, 2026
Retailer 7£2,454 GBP
Retailer 2£2,584 GBP
Retailer 6£2,649 GBP
Retailer 4£2,712 GBP
Retailer 8£2,712 GBP
Retailer 5£2,751 GBP
Retailer 3£4,430 GBP
NZ Jewellers£4,616 GBP

12 data points across 8 retailers

8 retailers£2,454 GBP to £4,616 GBP

B+
Cheapest Retailer
-
£2,454 GBP
B+
Retailer 2
-
£2,584 GBP
View
B+
Retailer 3
-
£2,649 GBP
View
B+
Retailer 4
-
£2,712 GBP
View
B
Retailer 5
-
£2,712 GBP
View
B+
Retailer 6
-
£2,751 GBP
View
B
Retailer 7
-
£4,430 GBP
View
Most Expensive
B
NZ Jewellers
8abead3f-97db-4291-8655-981400cffd61 · Nov 3
£4,616 GBP
$6,178 USD
View
7 more retailers have this diamond
Prices start from £2,454 GBPSave up to £2,162 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
£2,454 GBP