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Marquise|Natural|GIA

1.03ct I SI1 Marquise Natural Diamond

VG • I/SI1 • GIA 6551704697

Certificate GIA 6551704697

Diamond specifications and retailer prices

From £1,927 GBP
As of November 2, 2026
Save £2,203 GBP (53%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: £4,130 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 I colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 6551704697. Listed at 7 retailers as of November 2, 2026, with prices from £1,927 to £4,130, a £2,203 spread on the same certified stone. NZ Jewellers lists it at £4,130. 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
I
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishVery Good
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6551704697
Dimensions9.04 × 5.03 × 3.26 mm
L/W Ratio1.80
Girdle conditionThick
Key to symbols
Crystal, Needle
Top View
9.04 mm5.03 mm1.03 ctI / SI1
OriginNatural
CutVery Good
PolishVery Good
SymmetryExcellent
FluorescenceNone
CertificateGIA 6551704697
Side View
Table 62.0%CrownGirdlePavilionCulet: NoneDepth 64.8%

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 2
Current: £4,130 GBP|Low: £1,926 GBP|High: £4,256 GBP|Avg: £2,548 GBP|-3.0%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 2, 2026
Retailer 2£1,927 GBP
Retailer 4£1,950 GBP
Retailer 8£1,953 GBP
Retailer 5£1,975 GBP
Retailer 6£2,052 GBP
Retailer 7£2,281 GBP
Retailer 9£2,464 GBP
Retailer 3£3,461 GBP
NZ Jewellers£4,130 GBP

35 data points across 9 retailers

7 retailers£1,927 GBP to £4,130 GBP

A
Cheapest Retailer
-
£1,927 GBP
B+
Retailer 2
-
£1,950 GBP
View
B+
Retailer 3
-
£1,975 GBP
View
B+
Retailer 4
-
£2,052 GBP
View
Retailer 5
-
£2,281 GBP
View
Price last confirmed 31 days ago
B
Retailer 6
-
£3,461 GBP
View
Most Expensive
B
NZ Jewellers
f19d8d9f-60e7-489d-bdfb-5d95352695de · Nov 3
£4,130 GBP
$5,528 USD
View
6 more retailers have this diamond
Prices start from £1,927 GBPSave up to £2,203 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
1.03ct Marquise
£1,927 GBP