Marquise|Natural|GIA

1.01ct J SI1 Marquise Natural Diamond

EX • J/SI1 • GIA 6552021636

Certificate GIA 6552021636

Diamond specifications and retailer prices

From £1,415 GBP
As of November 6, 2026
Save £1,876 GBP (57%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £4,166 GBP at NZ Jewellers · As of September 25, 2026
View at NZ Jewellers

About this 1.01ct natural marquise diamond

This 1.01ct 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 6552021636. Listed at 19 retailers as of November 4, 2026, with a 133% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.01
Carat
J
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6552021636
Dimensions9.39 × 5.07 × 3.33 mm
L/W Ratio1.85
Top View
9.39 mm5.07 mm1.01 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6552021636
Side View
Table 63.0%CrownGirdle: THK-VTKPavilionCulet: 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: £1,969 GBP|Low: £1,415 GBP|High: £3,488 GBP|Avg: £2,107 GBP
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
Retailer 16
Retailer 17
November 6, 2026
Retailer 13£1,415 GBP
Retailer 5£1,538 GBP
Retailer 7£1,703 GBP
Retailer 6£1,735 GBP
Retailer 15£1,739 GBP
Retailer 17£1,763 GBP
Retailer 8£1,868 GBP
Retailer 14£1,868 GBP
Retailer 4£1,966 GBP
Retailer 1£1,969 GBP
Retailer 10£1,981 GBP
Retailer 3£2,170 GBP
Retailer 9£2,204 GBP
Retailer 11£2,299 GBP
Retailer 16£2,343 GBP
Retailer 2£2,876 GBP
Retailer 12£3,291 GBP

29 data points across 17 retailers

19 retailers£1,415 GBP to £3,291 GBP

A
Cheapest Retailer
-
£1,415 GBP
Retailer 2
-
£1,538 GBP
View
Price last confirmed 9 days ago
Retailer 3
-
£1,703 GBP
View
Price last confirmed 8 days ago
Retailer 4
-
£1,735 GBP
View
Price last confirmed 9 days ago
B+
Retailer 5
-
£1,739 GBP
View
Final sale: no returns
B+
Retailer 6
-
£1,763 GBP
View
Retailer 7
-
£1,868 GBP
View
Price last confirmed 7 days ago
B+
Retailer 8
-
£1,868 GBP
View
B
Retailer 9
-
£1,966 GBP
View
B
Retailer 10
-
£1,969 GBP
View
B
Retailer 11
-
£1,980 GBP
View
B+
Retailer 12
-
£1,981 GBP
View
B+
Retailer 13
-
£2,170 GBP
View
Retailer 14
-
£2,204 GBP
View
Price last confirmed 30 days ago
B
Retailer 15
-
£2,299 GBP
View
B
Retailer 16
-
£2,343 GBP
View
B
Retailer 17
-
£2,876 GBP
View
B
Retailer 18
-
£3,291 GBP
View
Most Expensive
NZ Jewellers
e9c09ad7-3f3e-4766-b2ea-1d2e2ac0d8ac · Sep 25
£4,166 GBP
$5,576 USD
View
Price last confirmed 42 days ago
18 more retailers have this diamond
Prices start from £1,415 GBPSave up to £1,876 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
1.01ct Marquise
£1,415 GBP