Round|Natural|GIA

0.90ct J SI2 Round Natural Diamond

EX • J/SI2 • GIA 1455851206

Certificate GIA 1455851206

Diamond specifications and retailer prices

From £1,096 GBP
$1,460 USD
As of October 25, 2026
Save £1,233 GBP (53%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £3,224 GBP at NZ Jewellers · As of October 27, 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 1455851206. Listed at 17 retailers as of October 25, 2026, with a 112% 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
SymmetryVery Good
FluorescenceNone
Crown angle35°
Pavilion angle41.4°
OriginNatural
Grading LabGIA
CertificateGIA 1455851206
Dimensions6.17 × 6.10 × 3.87 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Top View
6.17 mm6.10 mm0.90 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1455851206
Side View
Table 57.0%Crown 35°Girdle: THN-STKPavilion 41.4°Culet: NoneDepth 63.0%

Caratlytics Score

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

Price History

Last verified: Oct 25
Current: £2,329 GBP|Low: £921 GBP|High: £2,344 GBP|Avg: £1,436 GBP|+0.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 29, 2026
Retailer 4£1,096 GBP
Retailer 5£1,105 GBP
Retailer 7£1,168 GBP
Retailer 6£1,223 GBP
Retailer 8£1,255 GBP
Retailer 3£1,279 GBP
Retailer 2£1,802 GBP
Retailer 9£1,901 GBP
Retailer 1£2,329 GBP

38 data points across 9 retailers

17 retailers£1,096 GBP to £2,329 GBP

B+
Cheapest Retailer
-
£1,096 GBP
$1,460 USD
B+
Retailer 2
-
£1,105 GBP
$1,472 USD
View
Final sale: no returns
B+
Retailer 3
-
£1,110 GBP
$1,478 USD
View
B+
Retailer 4
-
£1,156 GBP
$1,539 USD
View
B
Retailer 5
-
£1,198 GBP
$1,595 USD
View
B
Retailer 6
-
£1,198 GBP
$1,595 USD
View
B
Retailer 7
-
£1,223 GBP
$1,628 USD
View
B+
Retailer 8
-
£1,253 GBP
$1,669 USD
View
B+
Retailer 9
-
£1,255 GBP
$1,671 USD
View
B+
Retailer 10
-
£1,279 GBP
View
B
Retailer 11
-
£1,352 GBP
$1,800 USD
View
B
Retailer 12
-
£1,352 GBP
$1,800 USD
View
B
Retailer 13
-
£1,382 GBP
$1,840 USD
View
B
Retailer 14
-
£1,397 GBP
$1,860 USD
View
B
Retailer 15
-
£1,802 GBP
€2,286 EUR
View
B
Retailer 16
-
£2,329 GBP
View
Most Expensive
NZ Jewellers
4bc21d95-6706-46f4-af1d-e750ebd3172e · Oct 27
£3,224 GBP
$4,294 USD
View
Price under review
16 more retailers have this diamond
Prices start from £1,096 GBPSave up to £1,233 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 Round
£1,096 GBP