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Marquise|Natural|GIA

0.90ct H SI1 Marquise Natural Diamond

H/SI1 • GIA 1449256928

Certificate GIA 1449256928

Diamond specifications and retailer prices

From £3,332 GBP
$4,472 USD
As of October 31, 2026
Save £326 GBP (9%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: £3,659 GBP at Jared · As of November 2, 2026
View at Jared

About this 0.9ct natural marquise diamond

This 0.9ct natural marquise sits in the just-under-one-carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included) and certified by GIA 1449256928. Listed at 4 retailers as of October 31, 2026, with a relatively tight 10% spread, which is unusual at this carat range and suggests competitive pricing across the listings. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

0.90
Carat
H
Colour
SI1
Clarity
-
Cut

Specifications

Cut
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1449256928
Dimensions9.50 × 5.11 mm
L/W Ratio1.86
Culet sizeNone
Top View
9.50 mm5.11 mm0.90 ctH / SI1
OriginNatural
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1449256928
Side View
Table 60.0%CrownGirdle: THN-THKPavilionCulet: NoneDepth 60.0%

Caratlytics Score

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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: Oct 31
Current: £3,659 GBP|Low: £2,802 GBP|High: £3,666 GBP|Avg: £3,332 GBP|-0.2%
Jared
Retailer 2
Retailer 3
Retailer 4
Retailer 5
September 26, 2026
Retailer 5£2,802 GBP
Retailer 2£3,332 GBP
Retailer 3£3,540 GBP
Retailer 4£3,540 GBP
Jared£3,659 GBP

7 data points across 5 retailers

4 retailers£3,332 GBP to £3,659 GBP

B
Cheapest Retailer
-
£3,332 GBP
$4,472 USD
C
Retailer 2
-
£3,540 GBP
$4,750 USD
View
C
Retailer 3
-
£3,540 GBP
$4,750 USD
View
Most Expensive
C
Jared
146069352 · Nov 2
£3,659 GBP
$4,910 USD
View
3 more retailers have this diamond
Prices start from £3,332 GBPSave up to £326 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
0.90ct Marquise
£3,332 GBP