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Marquise|Natural|GIA

1.02ct H SI1 Marquise Natural Diamond

EX • H/SI1 • GIA 2558115959

Certificate GIA 2558115959

Diamond specifications and retailer prices

From £2,247 GBP
As of November 4, 2026
Save £2,643 GBP (54%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £4,889 GBP at MOH London · As of November 2, 2026
View at MOH London

About this 1.02ct natural marquise diamond

This 1.02ct 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 2558115959. Listed at 14 retailers as of November 2, 2026, with prices from £2,247 to £4,889, a £2,643 spread on the same certified stone. MOH London lists it at £4,889. 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

1.02
Carat
H
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
OriginNatural
Grading LabGIA
CertificateGIA 2558115959
Dimensions10.17 × 5.23 × 3.29 mm
L/W Ratio1.94
Top View
10.17 mm5.23 mm1.02 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
CertificateGIA 2558115959
Side View
Table 59.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 62.8%

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 4
Current: £4,889 GBP|Low: £2,255 GBP|High: £4,949 GBP|Avg: £3,155 GBP|-0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 6£2,255 GBP
Retailer 4£2,325 GBP
Retailer 7£2,834 GBP
Retailer 3£2,944 GBP
Retailer 5£3,135 GBP
Retailer 2£3,290 GBP
Retailer 8£3,310 GBP
MOH London£4,889 GBP

45 data points across 8 retailers

14 retailers£2,247 GBP to £4,889 GBP

B+
Cheapest Retailer
-
£2,247 GBP
B+
Retailer 2
-
£2,255 GBP
View
B+
Retailer 3
-
£2,304 GBP
View
B+
Retailer 4
-
£2,325 GBP
View
Final sale: no returns
B+
Retailer 5
-
£2,516 GBP
View
B
Retailer 6
-
£2,834 GBP
View
B
Retailer 7
-
£2,881 GBP
View
B
Retailer 8
-
£2,881 GBP
View
B+
Retailer 9
-
£2,944 GBP
View
Retailer 10
-
£3,135 GBP
View
Price last confirmed 34 days ago
B
Retailer 11
-
£3,290 GBP
View
Retailer 12
-
£3,310 GBP
View
Price last confirmed 15 days ago
B
Retailer 13
-
£3,437 GBP
View
Most Expensive
B
MOH London
11EA10FE9 · Nov 2
£4,889 GBP
View
13 more retailers have this diamond
Prices start from £2,247 GBPSave up to £2,643 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+
1.02ct Marquise
£2,247 GBP