CaratHunter
Plans
Marquise|Natural|GIA

1.03ct I SI1 Marquise Natural Diamond

EX • I/SI1 • GIA 2185570589

Certificate GIA 2185570589

Diamond specifications and retailer prices

From £3,833 GBP
As of November 6, 2026
Save £2,436 GBP (39%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: £6,269 GBP at MOH London · As of November 4, 2026
View at MOH London

About this 1.03ct natural marquise diamond

This 1.03ct natural marquise sits in the classic one-carat band, graded I 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 2185570589. Listed at 5 retailers as of November 4, 2026, with prices from £3,833 to £6,269, a £2,436 spread on the same certified stone. MOH London lists it at £6,269. 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

1.03
Carat
I
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2185570589
Dimensions10.80 × 5.31 × 3.21 mm
L/W Ratio2.03
Girdle conditionFaceted
Cert comments
Pinpoints are not shown.
Top View
10.80 mm5.31 mm1.03 ctI / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 2185570589
Side View
Table 55.0%CrownGirdle: MED-VTKPavilionCuletDepth 60.4%

Caratlytics Score

How it works →
B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: £6,269 GBP|Low: £3,833 GBP|High: £6,362 GBP|Avg: £4,663 GBP|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 6, 2026
Retailer 2£3,833 GBP
Retailer 4£3,901 GBP
Retailer 5£3,978 GBP
Retailer 3£4,442 GBP
MOH London£6,269 GBP

45 data points across 5 retailers

5 retailers£3,833 GBP to £6,269 GBP

B
Cheapest Retailer
-
£3,833 GBP
B
Retailer 2
-
£3,901 GBP
View
Retailer 3
-
£3,978 GBP
View
Price last confirmed 29 days ago
B
Retailer 4
-
£4,442 GBP
View
Most Expensive
B
MOH London
325C69440 · Nov 4
£6,269 GBP
View
4 more retailers have this diamond
Prices start from £3,833 GBPSave up to £2,436 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
1.03ct Marquise
£3,833 GBP