Round|Natural|GIA

0.90ct J SI2 Round Natural Diamond

EX • J/SI2 • GIA 1523745327

Certificate GIA 1523745327

Diamond specifications and retailer prices

From £606 GBP
HK$6,300 HKD
As of October 29, 2026
Save £900 GBP (60%) vs most expensive(unlock to see where)
31 retailers carry this diamond
Most expensive: £1,994 GBP at NZ Jewellers · As of October 20, 2026
View at NZ Jewellers

About this 0.9ct natural round diamond

This 0.9ct natural round sits in the just-under-one-carat band, graded J colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1523745327. Listed at 31 retailers as of October 29, 2026, with a 149% 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
J
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
Crown angle34.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 1523745327
Dimensions6.24 × 6.19 × 3.78 mm
L/W Ratio1.01
Star length50%
Lower girdle80%
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Feather
Top View
6.24 mm6.19 mm0.90 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 1523745327
Side View
Table 60.0%Crown 34.5°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 60.7%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: £926 GBP|Low: £580 GBP|High: £1,515 GBP|Avg: £873 GBP|+5.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 30, 2026
Retailer 8£606 GBP
Retailer 5£610 GBP
Retailer 2£750 GBP
Retailer 10£754 GBP
Retailer 12£777 GBP
Retailer 7£818 GBP
Retailer 3£846 GBP
Retailer 4£857 GBP
Retailer 1£926 GBP
Retailer 9£968 GBP
Retailer 11£1,057 GBP
Retailer 6£1,506 GBP

40 data points across 12 retailers

31 retailers£606 GBP to £1,506 GBP

A
Cheapest Retailer
-
£606 GBP
HK$6,300 HKD
A
Retailer 2
-
£610 GBP
₹77,358 INR
View
Retailer 3
-
£750 GBP
$999 USD
View
Price last confirmed 21 days ago
B+
Retailer 4
-
£754 GBP
$1,004 USD
View
Final sale: no returns
A
Retailer 5
-
£777 GBP
$1,035 USD
View
A
Retailer 6
-
£783 GBP
$1,043 USD
View
Retailer 7
-
£813 GBP
A$1,665 AUD
View
Price last confirmed 171 days ago
Retailer 8
-
£818 GBP
$1,089 USD
View
Price last confirmed 22 days ago
Retailer 9
-
£818 GBP
$1,089 USD
View
Price last confirmed 10 days ago
A
Retailer 10
-
£818 GBP
$1,089 USD
View
Retailer 11
-
£818 GBP
$1,089 USD
View
Price last confirmed 14 days ago
Retailer 12
-
£818 GBP
$1,089 USD
View
Price last confirmed 18 days ago
Retailer 13
-
£818 GBP
$1,089 USD
View
Price last confirmed 21 days ago
A
Retailer 14
-
£818 GBP
$1,089 USD
View
Retailer 15
-
£837 GBP
$1,115 USD
View
Price last confirmed 36 days ago
B+
Retailer 16
-
£846 GBP
SGD 1,522 SGD
View
Retailer 17
-
£849 GBP
$1,131 USD
View
Price last confirmed 14 days ago
Retailer 18
-
£849 GBP
$1,131 USD
View
Price last confirmed 30 days ago
B+
Retailer 19
-
£849 GBP
$1,131 USD
View
B+
Retailer 20
-
£857 GBP
$1,141 USD
View
B+
Retailer 21
-
£926 GBP
View
Retailer 22
-
£943 GBP
$1,256 USD
View
Price last confirmed 38 days ago
Retailer 23
-
£943 GBP
$1,256 USD
View
Price last confirmed 9 days ago
Retailer 24
-
£943 GBP
$1,256 USD
View
Price last confirmed 21 days ago
Retailer 25
-
£943 GBP
$1,256 USD
View
Price last confirmed 30 days ago
B+
Retailer 26
-
£968 GBP
View
B
Retailer 27
-
£1,506 GBP
View
Retailer 28
-
£1,994 GBP
$2,655 USD
View
Price last confirmed 38 days ago
Retailer 29
-
£1,994 GBP
$2,655 USD
View
Price last confirmed 21 days ago
Retailer 30
-
£1,994 GBP
$2,655 USD
View
Price last confirmed 31 days ago
Most Expensive
NZ Jewellers
ce7d2ecf-52c7-4f0a-9b30-a7f1cce9af9d · Oct 20
£1,994 GBP
$2,655 USD
View
Price last confirmed 9 days ago
30 more retailers have this diamond
Prices start from £606 GBPSave up to £900 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 Round
£606 GBP