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Marquise|Natural|GIA

1.01ct J SI1 Marquise Natural Diamond

EX • J/SI1 • GIA 1565766770

Certificate GIA 1565766770

Diamond specifications and retailer prices

From £1,491 GBP
As of November 6, 2026
Save £2,663 GBP (64%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £4,154 GBP at NZ Jewellers · As of November 5, 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 1565766770. Listed at 10 retailers as of November 5, 2026, with prices from £1,491 to £4,154, a £2,663 spread on the same certified stone. NZ Jewellers lists it at £4,154. 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
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 1565766770
Dimensions10.50 × 5.27 × 3.13 mm
L/W Ratio1.99
Girdle conditionSlightly Thick to Very Thick
Key to symbols
Twinning Wisp, Feather, Needle
Top View
10.50 mm5.27 mm1.01 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1565766770
Side View
Table 61.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 59.3%

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: £4,154 GBP|Low: £1,491 GBP|High: £4,154 GBP|Avg: £2,280 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 8£1,491 GBP
Retailer 2£1,495 GBP
Retailer 3£1,927 GBP
Retailer 9£1,987 GBP
Retailer 7£2,064 GBP
Retailer 4£2,077 GBP
Retailer 6£2,404 GBP
Retailer 5£3,471 GBP
NZ Jewellers£4,154 GBP

7 data points across 9 retailers

10 retailers£1,491 GBP to £4,154 GBP

A
Cheapest Retailer
-
£1,491 GBP
A
Retailer 2
-
£1,495 GBP
View
B+
Retailer 3
-
£1,691 GBP
View
B+
Retailer 4
-
£1,927 GBP
View
B
Retailer 5
-
£1,987 GBP
View
B
Retailer 6
-
£2,064 GBP
View
B
Retailer 7
-
£2,077 GBP
View
B
Retailer 8
-
£2,404 GBP
View
B
Retailer 9
-
£3,471 GBP
View
Most Expensive
B
NZ Jewellers
d3cd0353-5ab1-4061-af33-91f4512dce40 · Nov 5
£4,154 GBP
$5,560 USD
View
9 more retailers have this diamond
Prices start from £1,491 GBPSave up to £2,663 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
£1,491 GBP