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Marquise|Natural|GIA

0.90ct E SI1 Marquise Natural Diamond

VG • E/SI1 • GIA 2557365490

Certificate GIA 2557365490

Diamond specifications and retailer prices

From £1,712 GBP
SGD 3,099 SGD
As of October 29, 2026
Save £1,483 GBP (46%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £3,194 GBP at Helzberg Diamonds · As of October 30, 2026
View at Helzberg Diamonds

About this 0.9ct natural marquise diamond

This 0.9ct natural marquise sits in the just-under-one-carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 2557365490. Listed at 14 retailers as of October 29, 2026, with prices from £1,712 to £3,194, a £1,483 spread on the same certified stone. Helzberg Diamonds lists it at £3,194. 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
E
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39.56°
Pavilion angle38.14°
OriginNatural
Grading LabGIA
CertificateGIA 2557365490
Dimensions9.43 × 5.05 × 2.98 mm
L/W Ratio1.87
Culet sizeNone
Top View
9.43 mm5.05 mm0.90 ctE / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2557365490
Side View
Table 62.0%Crown 39.56°Girdle: STK-VTKPavilion 38.14°Culet: NoneDepth 59.0%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: £3,194 GBP|Low: £1,712 GBP|High: £3,259 GBP|Avg: £2,270 GBP|-2.0%
Helzberg Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
October 30, 2026
Retailer 12£1,712 GBP
Retailer 9£1,827 GBP
Retailer 10£1,846 GBP
Retailer 8£1,859 GBP
Retailer 6£2,007 GBP
Retailer 4£2,024 GBP
Retailer 13£2,184 GBP
Retailer 3£2,274 GBP
Retailer 2£2,332 GBP
Retailer 7£2,393 GBP
Retailer 11£2,833 GBP
Retailer 5£3,007 GBP
Helzberg Diamonds£3,194 GBP

36 data points across 13 retailers

14 retailers£1,712 GBP to £3,194 GBP

A
Cheapest Retailer
-
£1,712 GBP
SGD 3,099 SGD
B+
Retailer 2
-
£1,827 GBP
$2,448 USD
View
B+
Retailer 3
-
£1,846 GBP
$2,474 USD
View
B+
Retailer 4
-
£1,859 GBP
$2,490 USD
View
B+
Retailer 5
-
£2,007 GBP
View
B+
Retailer 6
-
£2,024 GBP
SGD 3,664 SGD
View
B+
Retailer 7
-
£2,184 GBP
$2,926 USD
View
B
Retailer 8
-
£2,274 GBP
$3,047 USD
View
B+
Retailer 9
-
£2,332 GBP
$3,124 USD
View
B+
Retailer 10
-
£2,393 GBP
€3,054 EUR
View
B
Retailer 11
-
£2,668 GBP
$3,575 USD
View
B
Retailer 12
-
£2,833 GBP
$3,796 USD
View
B
Retailer 13
-
£3,007 GBP
$4,030 USD
View
Most Expensive
B
Helzberg Diamonds
XZRILLNJMLKPG · Oct 30
£3,194 GBP
$4,280 USD
View
13 more retailers have this diamond
Prices start from £1,712 GBPSave up to £1,483 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.

A
0.90ct Marquise
£1,712 GBP