CaratHunter
Plans
Oval|Natural|GIA

1.00ct J SI1 Oval Natural Diamond

EX • J/SI1 • GIA 6381650117

Certificate GIA 6381650117

Diamond specifications and retailer prices

From £1,339 GBP
As of November 6, 2026
Save £2,401 GBP (64%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: £3,740 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1ct natural oval diamond

This 1ct natural oval sits in the classic one-carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6381650117. Listed at 20 retailers as of November 5, 2026, with prices from £1,339 to £3,740, a £2,401 spread on the same certified stone. NZ Jewellers lists it at £3,740. 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
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6381650117
Dimensions7.55 × 5.49 × 3.55 mm
L/W Ratio1.38
Top View
7.55 mm5.49 mm1.00 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6381650117
Side View
Table 56.0%CrownGirdle: THN-THKPavilionCulet: NoneDepth 64.6%

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: Nov 6
Current: £2,221 GBP|Low: £1,239 GBP|High: £3,171 GBP|Avg: £1,889 GBP|+2.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 6£1,339 GBP
Retailer 3£1,452 GBP
Retailer 10£1,464 GBP
Retailer 9£1,496 GBP
Retailer 8£1,502 GBP
Retailer 2£1,695 GBP
Retailer 4£1,892 GBP
Retailer 5£2,183 GBP
Retailer 11£2,202 GBP
Retailer 1£2,221 GBP
Retailer 7£3,151 GBP

45 data points across 11 retailers

20 retailers£1,339 GBP to £3,740 GBP

B+
Cheapest Retailer
-
£1,339 GBP
B+
Retailer 2
-
£1,452 GBP
View
B+
Retailer 3
-
£1,464 GBP
View
B+
Retailer 4
-
£1,496 GBP
View
Final sale: no returns
B+
Retailer 5
-
£1,502 GBP
View
B
Retailer 6
-
£1,577 GBP
View
B
Retailer 7
-
£1,620 GBP
View
Retailer 8
-
£1,620 GBP
View
Price last confirmed 8 days ago
B
Retailer 9
-
£1,632 GBP
View
B+
Retailer 10
-
£1,695 GBP
View
B
Retailer 11
-
£1,870 GBP
View
B
Retailer 12
-
£1,875 GBP
View
B
Retailer 13
-
£1,875 GBP
View
B
Retailer 14
-
£1,892 GBP
View
B
Retailer 15
-
£1,935 GBP
View
B
Retailer 16
-
£2,183 GBP
View
Retailer 17
-
£2,202 GBP
View
Price last confirmed 30 days ago
B
Retailer 18
-
£2,221 GBP
View
Retailer 19
-
£3,151 GBP
View
Price last confirmed 8 days ago
Most Expensive
B
NZ Jewellers
6dbc399b-6a58-4cd3-b752-a1f499bf20e2 · Nov 5
£3,740 GBP
$5,006 USD
View
19 more retailers have this diamond
Prices start from £1,339 GBPSave up to £2,401 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+
1.00ct Oval
£1,339 GBP