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Marquise|Natural|GIA

0.90ct D SI1 Marquise Natural Diamond

EX • D/SI1 • GIA 7553217158

Certificate GIA 7553217158

Diamond specifications and retailer prices

From £1,815 GBP
HK$19,000 HKD
As of November 1, 2026
Save £2,385 GBP (57%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £5,759 GBP at Moon Ocean · As of November 2, 2026
View at Moon Ocean

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 top-tier cut grade stated by the retailer rather than the lab and certified by GIA 7553217158. Listed at 16 retailers as of October 30, 2026, with a 131% 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
D
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 7553217158
Dimensions10.32 × 5.13 × 2.99 mm
L/W Ratio2.01
Key to symbols
Crystal, Feather
Top View
10.32 mm5.13 mm0.90 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 7553217158
Side View
Table 60.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 58.3%

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: Nov 1
Current: £5,759 GBP|Low: £1,796 GBP|High: £5,832 GBP|Avg: £2,812 GBP|-1.2%
Moon Ocean
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
Retailer 16
November 2, 2026
Retailer 12£1,815 GBP
Retailer 2£1,823 GBP
Retailer 3£2,038 GBP
Retailer 8£2,161 GBP
Retailer 4£2,225 GBP
Retailer 5£2,243 GBP
Retailer 16£2,411 GBP
Retailer 15£2,504 GBP
Retailer 10£2,523 GBP
Retailer 7£2,526 GBP
Retailer 6£2,607 GBP
Retailer 13£2,782 GBP
Retailer 9£2,822 GBP
Retailer 11£4,032 GBP
Retailer 14£4,200 GBP
Moon Ocean£5,759 GBP

25 data points across 16 retailers

16 retailers£1,815 GBP to £4,200 GBP

A
Cheapest Retailer
-
£1,815 GBP
HK$19,000 HKD
A
Retailer 2
-
£1,823 GBP
₹232,580 INR
View
B+
Retailer 3
-
£2,038 GBP
A$4,201 AUD
View
B+
Retailer 4
-
£2,161 GBP
$2,896 USD
View
B+
Retailer 5
-
£2,225 GBP
$2,981 USD
View
Final sale: no returns
B+
Retailer 6
-
£2,243 GBP
$3,006 USD
View
B+
Retailer 7
-
£2,411 GBP
$3,230 USD
View
B+
Retailer 8
-
£2,504 GBP
$3,355 USD
View
B+
Retailer 9
-
£2,523 GBP
View
B+
Retailer 10
-
£2,526 GBP
SGD 4,573 SGD
View
B
Retailer 11
-
£2,607 GBP
$3,493 USD
View
B+
Retailer 12
-
£2,782 GBP
$3,727 USD
View
B+
Retailer 13
-
£2,822 GBP
€3,601 EUR
View
B
Retailer 14
-
£4,032 GBP
View
B
Retailer 15
-
£4,200 GBP
$5,628 USD
View
Most Expensive
Moon Ocean
NVN-98C8394EB-158 · Nov 2
£5,759 GBP
View
Price under review
15 more retailers have this diamond
Prices start from £1,815 GBPSave up to £2,385 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
£1,815 GBP