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Marquise|Natural|GIA

0.90ct D SI1 Marquise Natural Diamond

VG • D/SI1 • GIA 6551425340

Certificate GIA 6551425340

Diamond specifications and retailer prices

From £1,888 GBP
A$3,898 AUD
As of November 2, 2026
10 retailers carry this diamond
Most expensive: £3,575 GBP at NZ Jewellers · As of September 25, 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 D 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 6551425340. Listed at 10 retailers as of November 2, 2026. 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
D
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishVery Good
SymmetryVery Good
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 6551425340
Dimensions9.25 × 4.98 × 3.28 mm
L/W Ratio1.86
Girdle conditionFaceted
Top View
9.25 mm4.98 mm0.90 ctD / SI1
OriginNatural
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceMedium
CertificateGIA 6551425340
Side View
Table 60.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 65.7%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: £1,525 GBP|Low: £1,230 GBP|High: £3,168 GBP|Avg: £1,886 GBP|-0.4%
Retailer 1
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
Retailer 15
October 9, 2026
Retailer 14£1,230 GBP
Retailer 10£1,483 GBP
Retailer 1£1,525 GBP
Retailer 15£1,564 GBP
Retailer 4£1,586 GBP
Retailer 8£1,626 GBP
Retailer 3£1,727 GBP
Retailer 2£1,751 GBP
Retailer 9£1,751 GBP
Retailer 7£1,888 GBP
Retailer 13£2,063 GBP
Retailer 12£2,159 GBP
Retailer 5£2,439 GBP
Retailer 6£2,584 GBP
Retailer 11£3,100 GBP

19 data points across 15 retailers

10 retailers

Retailer 1
-
£1,230 GBP
HK$12,900 HKD
Price last confirmed 25 days ago
Retailer 2
-
£1,502 GBP
A$3,101 AUD
View
Price last confirmed 25 days ago
Retailer 3
-
£1,525 GBP
€1,949 EUR
View
Price last confirmed 24 days ago
Retailer 4
-
£1,586 GBP
$2,128 USD
View
Price last confirmed 32 days ago
Retailer 5
-
£1,727 GBP
SGD 3,131 SGD
View
Price last confirmed 25 days ago
B+
Retailer 6
-
£1,888 GBP
A$3,898 AUD
View
Retailer 7
-
£2,159 GBP
A$4,457 AUD
View
Price last confirmed 25 days ago
Retailer 8
-
£2,439 GBP
ZAR 52,882 ZAR
View
Price last confirmed 38 days ago
Retailer 9
-
£3,100 GBP
View
Price last confirmed 25 days ago
Most Expensive
NZ Jewellers
b1bc2089-8b64-401c-9de4-6c8ef54966fb · Sep 25
£3,575 GBP
$4,797 USD
View
Price last confirmed 38 days ago
9 more retailers have this diamond
Prices start from £1,888 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
£1,888 GBP