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Marquise|Natural|GIA

0.90ct I SI2 Marquise Natural Diamond

GD • I/SI2 • GIA 6555642973

Certificate GIA 6555642973

Diamond specifications and retailer prices

From £925 GBP
$1,241 USD
As of November 2, 2026
Save £113 GBP (11%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: £1,038 GBP at Michael Trio · As of November 2, 2026
View at Michael Trio

About this 0.9ct natural marquise diamond

This 0.9ct natural marquise sits in the just-under-one-carat band, graded I colour (near-colourless) and SI2 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 6555642973. Listed at 4 retailers as of November 2, 2026, with a relatively tight 12% 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
I
Colour
SI2
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishVery Good
SymmetryGood
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6555642973
Dimensions9.53 × 4.83 × 3.21 mm
L/W Ratio1.97
Culet sizeNone
Key to symbols
Crystal, Cloud, Feather
Top View
9.53 mm4.83 mm0.90 ctI / SI2
OriginNatural
CutGood
PolishVery Good
SymmetryGood
FluorescenceFaint
CertificateGIA 6555642973
Side View
Table 62.0%CrownGirdle: STK-ETKPavilionCulet: NoneDepth 66.5%

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 2
Current: £1,038 GBP|Low: £790 GBP|High: £1,098 GBP|Avg: £975 GBP|-5.5%
Michael Trio
Retailer 2
Retailer 3
Retailer 4
November 2, 2026
Retailer 4£925 GBP
Retailer 3£935 GBP
Retailer 2£1,023 GBP
Michael Trio£1,038 GBP

40 data points across 4 retailers

4 retailers£925 GBP to £1,038 GBP

B+
Cheapest Retailer
-
£925 GBP
$1,241 USD
Final sale: no returns
B+
Retailer 2
-
£935 GBP
$1,255 USD
View
B+
Retailer 3
-
£1,023 GBP
View
Most Expensive
B+
Michael Trio
2261067770 · Nov 2
£1,038 GBP
SGD 1,882 SGD
View
3 more retailers have this diamond
Prices start from £925 GBPSave up to £113 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
£925 GBP