CaratHunter
Plans
Marquise|Natural|GIA

1.03ct J SI1 Marquise Natural Diamond

VG • J/SI1 • GIA 5241005095

Certificate GIA 5241005095

Diamond specifications and retailer prices

From £1,463 GBP
As of November 6, 2026
Save £1,932 GBP (57%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £4,211 GBP at NZ Jewellers · As of September 30, 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 J 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 5241005095. Listed at 16 retailers as of November 2, 2026, with a 132% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
J
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 5241005095
Dimensions9.73 × 5.26 × 3.45 mm
L/W Ratio1.85
Girdle conditionFaceted
Top View
9.73 mm5.26 mm1.03 ctJ / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5241005095
Side View
Table 64.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 65.7%

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: £1,871 GBP|Low: £1,443 GBP|High: £3,532 GBP|Avg: £2,039 GBP|-0.3%
Retailer 1
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 4, 2026
Retailer 13£1,463 GBP
Retailer 6£1,569 GBP
Retailer 8£1,590 GBP
Retailer 2£1,620 GBP
Retailer 5£1,665 GBP
Retailer 4£1,688 GBP
Retailer 10£1,752 GBP
Retailer 12£1,815 GBP
Retailer 14£1,824 GBP
Retailer 1£1,871 GBP
Retailer 7£2,238 GBP
Retailer 3£2,371 GBP
Retailer 15£2,419 GBP
Retailer 9£2,908 GBP
Retailer 11£3,395 GBP

27 data points across 15 retailers

16 retailers£1,463 GBP to £3,395 GBP

A
Cheapest Retailer
-
£1,463 GBP
B+
Retailer 2
-
£1,569 GBP
View
B+
Retailer 3
-
£1,590 GBP
View
B+
Retailer 4
-
£1,665 GBP
View
B+
Retailer 5
-
£1,688 GBP
View
B+
Retailer 6
-
£1,752 GBP
View
B+
Retailer 7
-
£1,815 GBP
View
B+
Retailer 8
-
£1,824 GBP
View
B+
Retailer 9
-
£1,871 GBP
View
B
Retailer 10
-
£1,999 GBP
View
Retailer 11
-
£2,238 GBP
View
Price last confirmed 31 days ago
B
Retailer 12
-
£2,371 GBP
View
B
Retailer 13
-
£2,419 GBP
View
B
Retailer 14
-
£2,908 GBP
View
B
Retailer 15
-
£3,395 GBP
View
Most Expensive
NZ Jewellers
2dd9997a-7784-4d2b-bae8-0b28c855cb1b · Sep 30
£4,211 GBP
$5,637 USD
View
Price last confirmed 38 days ago
15 more retailers have this diamond
Prices start from £1,463 GBPSave up to £1,932 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
£1,463 GBP