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Marquise|Natural|GIA

0.90ct G SI1 Marquise Natural Diamond

VG • G/SI1 • GIA 5563688349

Certificate GIA 5563688349

Diamond specifications and retailer prices

From £1,737 GBP
SGD 3,146 SGD
As of October 31, 2026
Save £1,505 GBP (46%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £3,243 GBP at Helzberg Diamonds · As of November 2, 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 G colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 5563688349. Listed at 14 retailers as of October 31, 2026, with prices from £1,737 to £3,243, a £1,505 spread on the same certified stone. Helzberg Diamonds lists it at £3,243. 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
G
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle34.96°
Pavilion angle40.11°
OriginNatural
Grading LabGIA
CertificateGIA 5563688349
Dimensions10.30 × 5.20 × 2.98 mm
L/W Ratio1.98
Culet sizeNone
Top View
10.30 mm5.20 mm0.90 ctG / SI1
OriginNatural
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 5563688349
Side View
Table 63.0%Crown 34.96°Girdle: MED-THKPavilion 40.11°Culet: NoneDepth 57.3%

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 31
Current: £3,243 GBP|Low: £1,855 GBP|High: £3,243 GBP|Avg: £2,331 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
November 2, 2026
Retailer 11£1,855 GBP
Retailer 10£1,862 GBP
Retailer 3£1,874 GBP
Retailer 12£1,887 GBP
Retailer 6£2,021 GBP
Retailer 5£2,054 GBP
Retailer 8£2,215 GBP
Retailer 4£2,304 GBP
Retailer 7£2,366 GBP
Retailer 2£2,431 GBP
Retailer 13£2,876 GBP
Retailer 9£3,043 GBP
Helzberg Diamonds£3,243 GBP

13 data points across 13 retailers

14 retailers£1,737 GBP to £3,243 GBP

B+
Cheapest Retailer
-
£1,737 GBP
SGD 3,146 SGD
B+
Retailer 2
-
£1,855 GBP
$2,485 USD
View
B+
Retailer 3
-
£1,862 GBP
$2,495 USD
View
B+
Retailer 4
-
£1,874 GBP
$2,511 USD
View
B+
Retailer 5
-
£1,887 GBP
$2,528 USD
View
B
Retailer 6
-
£2,021 GBP
View
B
Retailer 7
-
£2,054 GBP
SGD 3,720 SGD
View
B
Retailer 8
-
£2,215 GBP
$2,968 USD
View
B
Retailer 9
-
£2,304 GBP
$3,087 USD
View
B
Retailer 10
-
£2,366 GBP
$3,170 USD
View
B
Retailer 11
-
£2,431 GBP
€3,102 EUR
View
B
Retailer 12
-
£2,876 GBP
$3,854 USD
View
B
Retailer 13
-
£3,043 GBP
$4,077 USD
View
Most Expensive
B
Helzberg Diamonds
XZRLLMJMOOJKP · Nov 2
£3,243 GBP
$4,345 USD
View
13 more retailers have this diamond
Prices start from £1,737 GBPSave up to £1,505 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
£1,737 GBP