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Round|Natural|GIA

0.90ct J SI2 Round Natural Diamond

VG • J/SI2 • GIA 1427157820

Certificate GIA 1427157820

Diamond specifications and retailer prices

From £692 GBP
HK$7,200 HKD
As of October 29, 2026
Save £1,686 GBP (71%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £2,378 GBP at Moon Ocean · As of October 29, 2026
View at Moon Ocean

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 very-good cut grade and certified by GIA 1427157820. Listed at 17 retailers as of October 29, 2026, with prices from £692 to £2,378, a £1,686 spread on the same certified stone. Moon Ocean lists it at £2,378. 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
J
Colour
SI2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle38°
Pavilion angle40.2°
OriginNatural
Grading LabGIA
CertificateGIA 1427157820
Dimensions6.05 × 5.97 × 3.87 mm
L/W Ratio1.01
Culet sizeNone
Key to symbols
Crystal, Cavity
Top View
6.05 mm5.97 mm0.90 ctJ / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1427157820
Side View
Table 57.0%Crown 38°Girdle: MED-THKPavilion 40.2°Culet: NoneDepth 64.4%

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: £2,378 GBP|Low: £622 GBP|High: £2,397 GBP|Avg: £1,174 GBP|+0.3%
Moon Ocean
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 30, 2026
Retailer 7£692 GBP
Retailer 5£743 GBP
Retailer 6£763 GBP
Retailer 8£828 GBP
Retailer 2£1,037 GBP
Retailer 4£1,134 GBP
Retailer 3£1,682 GBP
Moon Ocean£2,378 GBP

43 data points across 8 retailers

17 retailers£692 GBP to £2,378 GBP

A
Cheapest Retailer
-
£692 GBP
HK$7,200 HKD
A
Retailer 2
-
£743 GBP
$990 USD
View
B+
Retailer 3
-
£763 GBP
$1,016 USD
View
Final sale: no returns
B+
Retailer 4
-
£819 GBP
$1,091 USD
View
B+
Retailer 5
-
£828 GBP
$1,102 USD
View
B+
Retailer 6
-
£828 GBP
$1,102 USD
View
B+
Retailer 7
-
£828 GBP
$1,103 USD
View
B+
Retailer 8
-
£860 GBP
$1,145 USD
View
B+
Retailer 9
-
£955 GBP
$1,272 USD
View
B+
Retailer 10
-
£999 GBP
$1,330 USD
View
B+
Retailer 11
-
£999 GBP
$1,330 USD
View
B+
Retailer 12
-
£1,029 GBP
$1,370 USD
View
B+
Retailer 13
-
£1,037 GBP
View
B
Retailer 14
-
£1,134 GBP
€1,438 EUR
View
B
Retailer 15
-
£1,682 GBP
View
C
Retailer 16
-
£2,228 GBP
$2,967 USD
View
Most Expensive
B
Moon Ocean
NVN-F4489A766-820 · Oct 29
£2,378 GBP
View
16 more retailers have this diamond
Prices start from £692 GBPSave up to £1,686 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
£692 GBP