Marquise|Natural|GIA

1.00ct I SI2 Marquise Natural Diamond

EX • I/SI2 • GIA 7551705063

Certificate GIA 7551705063

Diamond specifications and retailer prices

From £2,018 GBP
As of November 6, 2026
Save £161 GBP (7%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £4,299 GBP at NZ Jewellers · As of October 17, 2026
View at NZ Jewellers

About this 1ct natural marquise diamond

This 1ct natural marquise sits in the classic one-carat band, graded I 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 7551705063. Listed at 15 retailers as of November 5, 2026, with a relatively tight 8% spread, which is unusual at this carat range and suggests competitive pricing across the listings. 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

1.00
Carat
I
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 7551705063
Dimensions9.87 × 5.15 × 3.33 mm
L/W Ratio1.92
Culet sizeNone
Top View
9.87 mm5.15 mm1.00 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 7551705063
Side View
Table 61.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 64.8%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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Price History

Last verified: Nov 6
Current: £4,299 GBP|Low: £1,683 GBP|High: £4,299 GBP|Avg: £2,290 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
Retailer 15
Retailer 16
Retailer 17
Retailer 18
October 21, 2026
Retailer 9£1,683 GBP
Retailer 3£1,718 GBP
Retailer 8£1,744 GBP
Retailer 7£1,797 GBP
Retailer 4£1,863 GBP
Retailer 5£1,863 GBP
Retailer 10£1,895 GBP
Retailer 6£1,948 GBP
Retailer 15£2,018 GBP
Retailer 2£2,037 GBP
Retailer 17£2,149 GBP
Retailer 11£2,155 GBP
Retailer 16£2,162 GBP
Retailer 14£2,179 GBP
Retailer 13£2,389 GBP
Retailer 18£2,991 GBP
Retailer 12£3,621 GBP
NZ Jewellers£4,299 GBP

27 data points across 18 retailers

15 retailers£2,018 GBP to £2,179 GBP

Retailer 1
-
£1,683 GBP
Price last confirmed 17 days ago
Retailer 2
-
£1,718 GBP
View
Price last confirmed 18 days ago
Retailer 3
-
£1,797 GBP
View
Price last confirmed 17 days ago
Retailer 4
-
£1,863 GBP
View
Price last confirmed 17 days ago
Retailer 5
-
£1,863 GBP
View
Price last confirmed 21 days ago
Retailer 6
-
£1,895 GBP
View
Price last confirmed 19 days ago
Retailer 7
-
£1,948 GBP
View
Price last confirmed 20 days ago
B+
Retailer 8
-
£2,018 GBP
View
Retailer 9
-
£2,149 GBP
View
Price last confirmed 18 days ago
Retailer 10
-
£2,155 GBP
View
Price last confirmed 16 days ago
B+
Retailer 11
-
£2,162 GBP
View
B+
Retailer 12
-
£2,179 GBP
View
Retailer 13
-
£2,991 GBP
View
Price last confirmed 18 days ago
Retailer 14
-
£3,621 GBP
View
Price last confirmed 16 days ago
Most Expensive
NZ Jewellers
43b8eb8b-819e-4622-9965-29f5f88f7185 · Oct 17
£4,299 GBP
$5,754 USD
View
Price last confirmed 19 days ago
14 more retailers have this diamond
Prices start from £2,018 GBPSave up to £161 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+
1.00ct Marquise
£2,018 GBP