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Marquise|Natural|GIA

0.90ct E SI1 Marquise Natural Diamond

GD • E/SI1 • GIA 6243093257

Certificate GIA 6243093257

Diamond specifications and retailer prices

From £1,639 GBP
SGD 2,968 SGD
As of October 29, 2026
Save £1,421 GBP (46%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £3,060 GBP at Helzberg Diamonds · As of October 31, 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 standard cut grade stated by the retailer rather than the lab and certified by GIA 6243093257. Listed at 13 retailers as of October 29, 2026, with prices from £1,639 to £3,060, a £1,421 spread on the same certified stone. Helzberg Diamonds lists it at £3,060. 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
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39.49°
Pavilion angle42.29°
OriginNatural
Grading LabGIA
CertificateGIA 6243093257
Dimensions9.05 × 4.97 × 3.35 mm
L/W Ratio1.82
Culet sizeNone
Top View
9.05 mm4.97 mm0.90 ctE / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6243093257
Side View
Table 61.0%Crown 39.49°Girdle: THK-ETKPavilion 42.29°Culet: NoneDepth 67.4%

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: £3,060 GBP|Low: £1,750 GBP|High: £3,060 GBP|Avg: £2,173 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
October 31, 2026
Retailer 9£1,750 GBP
Retailer 6£1,761 GBP
Retailer 10£1,769 GBP
Retailer 3£1,781 GBP
Retailer 2£1,924 GBP
Retailer 8£1,939 GBP
Retailer 11£2,096 GBP
Retailer 4£2,193 GBP
Retailer 5£2,287 GBP
Retailer 7£2,714 GBP
Retailer 12£2,885 GBP
Helzberg Diamonds£3,060 GBP

18 data points across 12 retailers

13 retailers£1,639 GBP to £3,060 GBP

A
Cheapest Retailer
-
£1,639 GBP
SGD 2,968 SGD
B+
Retailer 2
-
£1,750 GBP
$2,345 USD
View
B+
Retailer 3
-
£1,761 GBP
$2,360 USD
View
B+
Retailer 4
-
£1,769 GBP
$2,370 USD
View
B+
Retailer 5
-
£1,781 GBP
$2,386 USD
View
B+
Retailer 6
-
£1,924 GBP
View
B+
Retailer 7
-
£1,939 GBP
SGD 3,511 SGD
View
B
Retailer 8
-
£2,096 GBP
$2,809 USD
View
B
Retailer 9
-
£2,193 GBP
$2,938 USD
View
B
Retailer 10
-
£2,287 GBP
€2,918 EUR
View
B
Retailer 11
-
£2,714 GBP
$3,636 USD
View
B
Retailer 12
-
£2,885 GBP
$3,865 USD
View
Most Expensive
B
Helzberg Diamonds
XZRMIKJGPJILN · Oct 31
£3,060 GBP
$4,100 USD
View
12 more retailers have this diamond
Prices start from £1,639 GBPSave up to £1,421 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
£1,639 GBP