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Marquise|Natural|GIA

1.03ct J SI1 Marquise Natural Diamond

EX • J/SI1 • GIA 2546728305

Certificate GIA 2546728305

Diamond specifications and retailer prices

From £1,851 GBP
As of November 6, 2026
Save £2,523 GBP (58%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £4,374 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 J 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 2546728305. Listed at 15 retailers as of November 5, 2026, with prices from £1,851 to £4,374, a £2,523 spread on the same certified stone. NZ Jewellers lists it at £4,374. 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
J
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishGood
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 2546728305
Dimensions10.18 × 5.19 × 3.28 mm
L/W Ratio1.96
Top View
10.18 mm5.19 mm1.03 ctJ / SI1
OriginNatural
CutExcellent
PolishGood
SymmetryVery Good
FluorescenceFaint
CertificateGIA 2546728305
Side View
Table 60.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 63.2%

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: £4,374 GBP|Low: £1,851 GBP|High: £4,374 GBP|Avg: £2,617 GBP|+6.4%
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 7£1,851 GBP
Retailer 11£1,868 GBP
Retailer 14£2,025 GBP
Retailer 13£2,075 GBP
Retailer 5£2,080 GBP
Retailer 10£2,092 GBP
Retailer 6£2,189 GBP
Retailer 15£2,189 GBP
Retailer 9£2,223 GBP
Retailer 3£2,264 GBP
Retailer 8£2,465 GBP
Retailer 2£2,629 GBP
Retailer 12£3,044 GBP
Retailer 4£3,685 GBP
NZ Jewellers£4,374 GBP

23 data points across 15 retailers

15 retailers£1,851 GBP to £4,374 GBP

B+
Cheapest Retailer
-
£1,851 GBP
B+
Retailer 2
-
£1,868 GBP
View
B+
Retailer 3
-
£2,025 GBP
View
B
Retailer 4
-
£2,075 GBP
View
B
Retailer 5
-
£2,080 GBP
View
B
Retailer 6
-
£2,092 GBP
View
B
Retailer 7
-
£2,189 GBP
View
B
Retailer 8
-
£2,189 GBP
View
B
Retailer 9
-
£2,223 GBP
View
B
Retailer 10
-
£2,264 GBP
View
B
Retailer 11
-
£2,465 GBP
View
B
Retailer 12
-
£2,629 GBP
View
B
Retailer 13
-
£3,044 GBP
View
Retailer 14
-
£3,685 GBP
View
Price last confirmed 19 days ago
Most Expensive
B
NZ Jewellers
2f279e3d-b1ac-463a-8375-93b1ecb90028 · Nov 5
£4,374 GBP
$5,855 USD
View
14 more retailers have this diamond
Prices start from £1,851 GBPSave up to £2,523 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
£1,851 GBP