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Marquise|Natural|GIA

1.01ct J SI2 Marquise Natural Diamond

EX • J/SI2 • GIA 6551019703

Certificate GIA 6551019703

Diamond specifications and retailer prices

From £1,756 GBP
$2,353 USD
As of November 1, 2026
Save £2,769 GBP (61%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £4,525 GBP at NZ Jewellers · As of October 30, 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 SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6551019703. Listed at 19 retailers as of October 30, 2026, with prices from £1,756 to £4,525, a £2,769 spread on the same certified stone. NZ Jewellers lists it at £4,525. 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
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle31.5°
OriginNatural
Grading LabGIA
CertificateGIA 6551019703
Dimensions9.62 × 5.25 × 3.33 mm
L/W Ratio1.83
Top View
9.62 mm5.25 mm1.01 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6551019703
Side View
Table 62.0%Crown 31.5°Girdle: THK-VTKPavilionCulet: NoneDepth 63.5%

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 1
Current: £4,525 GBP|Low: £1,821 GBP|High: £4,525 GBP|Avg: £2,578 GBP
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
November 2, 2026
Retailer 12£1,821 GBP
Retailer 10£1,961 GBP
Retailer 11£1,961 GBP
Retailer 14£2,036 GBP
Retailer 4£2,049 GBP
Retailer 3£2,143 GBP
Retailer 2£2,169 GBP
Retailer 13£2,263 GBP
Retailer 5£2,277 GBP
Retailer 8£2,295 GBP
Retailer 7£2,534 GBP
Retailer 6£3,151 GBP
Retailer 9£3,620 GBP
NZ Jewellers£4,525 GBP

45 data points across 14 retailers

19 retailers£1,756 GBP to £4,525 GBP

B+
Cheapest Retailer
-
£1,756 GBP
$2,353 USD
B+
Retailer 2
-
£1,821 GBP
$2,440 USD
View
B+
Retailer 3
-
£1,842 GBP
$2,468 USD
View
B
Retailer 4
-
£1,961 GBP
$2,627 USD
View
B
Retailer 5
-
£1,961 GBP
$2,627 USD
View
Retailer 6
-
£1,961 GBP
$2,627 USD
View
Price last confirmed 17 days ago
B
Retailer 7
-
£1,990 GBP
$2,666 USD
View
B
Retailer 8
-
£2,036 GBP
$2,728 USD
View
B
Retailer 9
-
£2,049 GBP
$2,746 USD
View
B
Retailer 10
-
£2,143 GBP
CA$3,987 CAD
View
B+
Retailer 11
-
£2,169 GBP
View
B
Retailer 12
-
£2,263 GBP
$3,032 USD
View
B
Retailer 13
-
£2,277 GBP
$3,051 USD
View
B
Retailer 14
-
£2,295 GBP
View
Retailer 15
-
£2,514 GBP
$3,368 USD
View
Price last confirmed 18 days ago
B
Retailer 16
-
£2,534 GBP
€3,233 EUR
View
B
Retailer 17
-
£3,151 GBP
$4,222 USD
View
B
Retailer 18
-
£3,620 GBP
View
Most Expensive
C
NZ Jewellers
5db5acdd-5caa-4f36-935e-76b7791b331d · Oct 30
£4,525 GBP
$6,063 USD
View
18 more retailers have this diamond
Prices start from £1,756 GBPSave up to £2,769 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+
1.01ct Marquise
£1,756 GBP