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Round|Natural|GIA

1.00ct J SI2 Round Natural Diamond

EX • J/SI2 • GIA 2243070990

Certificate GIA 2243070990

Diamond specifications and retailer prices

From £1,030 GBP
As of November 5, 2026
Save £920 GBP (47%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £1,950 GBP at Wholesale Diamonds Direct · As of November 4, 2026
View at Wholesale Diamonds Direct

About this 1ct natural round diamond

This 1ct natural round sits in the classic one-carat band, graded J colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2243070990. Listed at 10 retailers as of November 4, 2026, with prices from £1,030 to £1,950, a £920 spread on the same certified stone. Wholesale Diamonds Direct lists it at £1,950. 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

1.00
Carat
J
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle41.4°
OriginNatural
Grading LabGIA
CertificateGIA 2243070990
Dimensions6.36 × 4.01 × 4.01 mm
L/W Ratio1.59
Culet sizeNone
Top View
6.36 mm4.01 mm1.00 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2243070990
Side View
Table 57.0%Crown 35°Girdle: MED-STKPavilion 41.4°Culet: NoneDepth 63.3%

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 5
Current: £1,317 GBP|Low: £1,024 GBP|High: £2,068 GBP|Avg: £1,467 GBP|-3.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Wholesale Diamonds Direct
November 6, 2026
Retailer 3£1,030 GBP
Retailer 6£1,195 GBP
Retailer 5£1,216 GBP
Retailer 9£1,302 GBP
Retailer 1£1,317 GBP
Retailer 7£1,323 GBP
Retailer 4£1,542 GBP
Retailer 8£1,580 GBP
Retailer 2£1,670 GBP
Wholesale Diamonds Direct£1,950 GBP

43 data points across 10 retailers

10 retailers£1,030 GBP to £1,950 GBP

A
Cheapest Retailer
-
£1,030 GBP
A
Retailer 2
-
£1,195 GBP
View
A
Retailer 3
-
£1,216 GBP
View
A
Retailer 4
-
£1,302 GBP
View
A
Retailer 5
-
£1,317 GBP
View
B+
Retailer 6
-
£1,323 GBP
View
B+
Retailer 7
-
£1,542 GBP
View
B+
Retailer 8
-
£1,580 GBP
View
B+
Retailer 9
-
£1,670 GBP
View
Most Expensive
B
Wholesale Diamonds Direct
481731588 · Nov 4
£1,950 GBP
$2,625 USD
View
9 more retailers have this diamond
Prices start from £1,030 GBPSave up to £920 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
1.00ct Round
£1,030 GBP