Marquise|Natural|GIA

1.01ct H SI1 Marquise Natural Diamond

EX • H/SI1 • GIA 6551026609

Certificate GIA 6551026609

Diamond specifications and retailer prices

From £2,295 GBP
As of November 5, 2026
Save £2,678 GBP (54%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £4,973 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 H 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 6551026609. Listed at 19 retailers as of November 5, 2026, with prices from £2,295 to £4,973, a £2,678 spread on the same certified stone. NZ Jewellers lists it at £4,973. 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
H
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
Crown angle34.92°
OriginNatural
Grading LabGIA
CertificateGIA 6551026609
Dimensions10.13 × 5.37 × 3.26 mm
L/W Ratio1.89
Top View
10.13 mm5.37 mm1.01 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 6551026609
Side View
Table 60.0%Crown 34.92°Girdle: MED-THKPavilionCulet: NoneDepth 60.7%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: £2,769 GBP|Low: £2,295 GBP|High: £4,831 GBP|Avg: £3,053 GBP|-1.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 9£2,295 GBP
Retailer 10£2,492 GBP
Retailer 4£2,685 GBP
Retailer 12£2,758 GBP
Retailer 1£2,769 GBP
Retailer 6£2,873 GBP
Retailer 3£2,929 GBP
Retailer 2£3,026 GBP
Retailer 11£3,057 GBP
Retailer 5£3,130 GBP
Retailer 7£3,484 GBP
Retailer 8£4,773 GBP

37 data points across 12 retailers

19 retailers£2,295 GBP to £4,973 GBP

B+
Cheapest Retailer
-
£2,295 GBP
B+
Retailer 2
-
£2,492 GBP
View
B+
Retailer 3
-
£2,586 GBP
View
Retailer 4
-
£2,586 GBP
View
Price last confirmed 9 days ago
B+
Retailer 5
-
£2,685 GBP
View
B+
Retailer 6
-
£2,758 GBP
View
B+
Retailer 7
-
£2,769 GBP
View
B+
Retailer 8
-
£2,770 GBP
View
B+
Retailer 9
-
£2,873 GBP
View
B
Retailer 10
-
£2,929 GBP
View
B
Retailer 11
-
£2,929 GBP
View
B
Retailer 12
-
£2,984 GBP
View
B
Retailer 13
-
£3,026 GBP
View
Retailer 14
-
£3,057 GBP
View
Price last confirmed 30 days ago
B
Retailer 15
-
£3,130 GBP
View
Retailer 16
-
£3,231 GBP
View
Price last confirmed 15 days ago
B
Retailer 17
-
£3,484 GBP
View
B
Retailer 18
-
£4,773 GBP
View
Most Expensive
B
NZ Jewellers
e1f01791-b8dc-4b1a-9a3c-d67418633c41 · Nov 5
£4,973 GBP
$6,656 USD
View
18 more retailers have this diamond
Prices start from £2,295 GBPSave up to £2,678 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
£2,295 GBP