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Marquise|Natural|GIA

3.00ct H SI1 Marquise Natural Diamond

EX • H/SI1 • GIA 5556836918

Certificate GIA 5556836918

Diamond specifications and retailer prices

From £26,556 GBP
As of November 4, 2026
Save £14,222 GBP (35%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £40,778 GBP at Diamonds Direct · As of November 6, 2026
View at Diamonds Direct

About this 3ct natural marquise diamond

This 3ct natural marquise sits in the three to five 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 5556836918. Listed at 9 retailers as of November 4, 2026, with prices from £26,556 to £40,778, a £14,222 spread on the same certified stone. Diamonds Direct lists it at £40,778. 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
H
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.68°
Pavilion angle38.12°
OriginNatural
Grading LabGIA
CertificateGIA 5556836918
Dimensions14.34 × 7.57 × 4.64 mm
L/W Ratio1.89
Culet sizeNone
Top View
14.34 mm7.57 mm3.00 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5556836918
Side View
Table 58.0%Crown 38.68°Girdle: MED-THKPavilion 38.12°Culet: NoneDepth 61.3%

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 4
Current: £40,778 GBP|Low: £26,546 GBP|High: £43,323 GBP|Avg: £32,320 GBP|-5.9%
Diamonds Direct
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 9£26,546 GBP
Retailer 7£26,556 GBP
Retailer 4£27,868 GBP
Retailer 8£29,364 GBP
Retailer 2£29,663 GBP
Retailer 3£33,875 GBP
Retailer 6£34,032 GBP
Retailer 5£34,189 GBP
Diamonds Direct£40,778 GBP

22 data points across 9 retailers

9 retailers£26,556 GBP to £40,778 GBP

B+
Cheapest Retailer
-
£26,556 GBP
B+
Retailer 2
-
£27,868 GBP
View
B+
Retailer 3
-
£29,364 GBP
View
B+
Retailer 4
-
£29,663 GBP
View
B
Retailer 5
-
£33,875 GBP
View
B
Retailer 6
-
£34,032 GBP
View
B
Retailer 7
-
£34,189 GBP
View
B
Retailer 8
-
£37,536 GBP
View
Most Expensive
B
Diamonds Direct
1055310 · Nov 6
£40,778 GBP
$54,581 USD
View
8 more retailers have this diamond
Prices start from £26,556 GBPSave up to £14,222 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
£26,556 GBP