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Marquise|Natural|GIA

0.90ct E SI1 Marquise Natural Diamond

EX • E/SI1 • GIA 7566551110

Certificate GIA 7566551110

Diamond specifications and retailer prices

From £1,889 GBP
SGD 3,421 SGD
As of October 29, 2026
Save £1,639 GBP (46%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £3,528 GBP at Helzberg Diamonds · As of October 29, 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 top-tier cut grade stated by the retailer rather than the lab and certified by GIA 7566551110. Listed at 14 retailers as of October 29, 2026, with prices from £1,889 to £3,528, a £1,639 spread on the same certified stone. Helzberg Diamonds lists it at £3,528. 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
FluorescenceNone
Crown angle39.65°
Pavilion angle38.46°
OriginNatural
Grading LabGIA
CertificateGIA 7566551110
Dimensions9.55 × 5.02 × 3.06 mm
L/W Ratio1.90
Culet sizeNone
Top View
9.55 mm5.02 mm0.90 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 7566551110
Side View
Table 60.0%Crown 39.65°Girdle: STK-VTKPavilion 38.46°Culet: NoneDepth 61.0%

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: Oct 29
Current: £3,528 GBP|Low: £2,017 GBP|High: £3,528 GBP|Avg: £2,488 GBP
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 31, 2026
Retailer 13£2,017 GBP
Retailer 8£2,019 GBP
Retailer 3£2,036 GBP
Retailer 12£2,052 GBP
Retailer 7£2,215 GBP
Retailer 5£2,234 GBP
Retailer 11£2,399 GBP
Retailer 2£2,469 GBP
Retailer 4£2,476 GBP
Retailer 6£2,573 GBP
Retailer 10£3,128 GBP
Retailer 9£3,310 GBP
Helzberg Diamonds£3,528 GBP

23 data points across 13 retailers

14 retailers£1,889 GBP to £3,528 GBP

B+
Cheapest Retailer
-
£1,889 GBP
SGD 3,421 SGD
B+
Retailer 2
-
£2,017 GBP
$2,703 USD
View
B+
Retailer 3
-
£2,019 GBP
$2,705 USD
View
B+
Retailer 4
-
£2,036 GBP
$2,728 USD
View
B+
Retailer 5
-
£2,052 GBP
$2,750 USD
View
B+
Retailer 6
-
£2,215 GBP
View
B+
Retailer 7
-
£2,234 GBP
SGD 4,045 SGD
View
B+
Retailer 8
-
£2,399 GBP
$3,214 USD
View
B+
Retailer 9
-
£2,469 GBP
€3,151 EUR
View
B+
Retailer 10
-
£2,476 GBP
$3,317 USD
View
B+
Retailer 11
-
£2,573 GBP
$3,448 USD
View
B
Retailer 12
-
£3,128 GBP
$4,191 USD
View
B
Retailer 13
-
£3,310 GBP
$4,435 USD
View
Most Expensive
B
Helzberg Diamonds
XZRNLMMLLHHHG · Oct 29
£3,528 GBP
$4,727 USD
View
13 more retailers have this diamond
Prices start from £1,889 GBPSave up to £1,639 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
£1,889 GBP