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Marquise|Natural|GIA

3.00ct J SI1 Marquise Natural Diamond

EX • J/SI1 • GIA 6542178158

Certificate GIA 6542178158

Diamond specifications and retailer prices

From £24,045 GBP
As of November 5, 2026
Save £15,668 GBP (39%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £39,713 GBP at MOH London · As of November 4, 2026
View at MOH London

About this 3ct natural marquise diamond

This 3ct natural marquise sits in the three to five carat band, graded J 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 6542178158. Listed at 8 retailers as of November 4, 2026, with prices from £24,045 to £39,713, a £15,668 spread on the same certified stone. MOH London lists it at £39,713. 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

3.00
Carat
J
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6542178158
Dimensions18.81 × 7.01 × 4.02 mm
L/W Ratio2.68
Top View
18.81 mm7.01 mm3.00 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6542178158
Side View
Table 61.0%CrownGirdle: MediumPavilionCulet: NoneDepth 57.3%

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 5
Current: £39,713 GBP|Low: £22,801 GBP|High: £40,300 GBP|Avg: £28,698 GBP|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 6, 2026
Retailer 5£22,801 GBP
Retailer 4£25,251 GBP
Retailer 3£25,431 GBP
Retailer 2£29,171 GBP
MOH London£39,713 GBP

45 data points across 5 retailers

8 retailers£24,045 GBP to £39,713 GBP

B
Cheapest Retailer
-
£24,045 GBP
Retailer 2
-
£25,251 GBP
View
Price last confirmed 33 days ago
B+
Retailer 3
-
£25,431 GBP
View
B
Retailer 4
-
£27,526 GBP
View
B
Retailer 5
-
£28,013 GBP
View
B
Retailer 6
-
£29,171 GBP
View
B
Retailer 7
-
£29,818 GBP
View
Most Expensive
B
MOH London
D1C839064 · Nov 4
£39,713 GBP
View
7 more retailers have this diamond
Prices start from £24,045 GBPSave up to £15,668 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+
3.00ct Marquise
£24,045 GBP