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Marquise|Natural|GIA

0.90ct E SI1 Marquise Natural Diamond

EX • E/SI1 • GIA 1557992950

Certificate GIA 1557992950

Diamond specifications and retailer prices

From £1,481 GBP
HK$15,500 HKD
As of October 26, 2026
Save £2,426 GBP (62%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £4,232 GBP at NZ Jewellers · As of October 24, 2026
View at NZ Jewellers

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 top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1557992950. Listed at 13 retailers as of October 26, 2026, with a 164% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

0.90
Carat
E
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
Pavilion angle40.26°
OriginNatural
Grading LabGIA
CertificateGIA 1557992950
Dimensions10.52 × 4.78 × 3.11 mm
L/W Ratio2.20
Key to symbols
Feather
Top View
10.52 mm4.78 mm0.90 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 1557992950
Side View
Table 57.0%CrownGirdle: STK-VTKPavilion 40.26°Culet: NoneDepth 65.0%

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 26
Current: £4,232 GBP|Low: £1,481 GBP|High: £4,438 GBP|Avg: £2,594 GBP|-4.6%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
October 27, 2026
Retailer 3£1,481 GBP
Retailer 2£1,797 GBP
Retailer 13£1,866 GBP
Retailer 4£2,024 GBP
Retailer 6£2,074 GBP
Retailer 11£2,102 GBP
Retailer 5£2,205 GBP
Retailer 10£2,384 GBP
Retailer 8£2,452 GBP
Retailer 12£2,523 GBP
Retailer 14£3,072 GBP
Retailer 9£3,551 GBP
Retailer 7£3,907 GBP
NZ Jewellers£4,232 GBP

26 data points across 14 retailers

13 retailers£1,481 GBP to £3,907 GBP

A
Cheapest Retailer
-
£1,481 GBP
HK$15,500 HKD
Retailer 2
-
£1,797 GBP
€2,293 EUR
View
Price last confirmed 4 days ago
B+
Retailer 3
-
£1,866 GBP
$2,500 USD
View
B+
Retailer 4
-
£2,024 GBP
$2,712 USD
View
B+
Retailer 5
-
£2,074 GBP
SGD 3,756 SGD
View
B+
Retailer 6
-
£2,102 GBP
$2,816 USD
View
B+
Retailer 7
-
£2,205 GBP
$2,955 USD
View
Retailer 8
-
£2,384 GBP
A$4,914 AUD
View
Price last confirmed 7 days ago
B+
Retailer 9
-
£2,452 GBP
€3,129 EUR
View
B
Retailer 10
-
£3,072 GBP
€3,920 EUR
View
B
Retailer 11
-
£3,551 GBP
View
B
Retailer 12
-
£3,907 GBP
View
Most Expensive
NZ Jewellers
a284c0a3-a01c-45e0-8267-667b4cb799b5 · Oct 24
£4,232 GBP
$5,670 USD
View
Price last confirmed 7 days ago
12 more retailers have this diamond
Prices start from £1,481 GBPSave up to £2,426 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
£1,481 GBP