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Oval|Natural|GIA

1.28ct J SI1 Oval Natural Diamond

EX • J/SI1 • GIA 2547009065

Certificate GIA 2547009065

Diamond specifications and retailer prices

From £2,271 GBP
As of November 4, 2026
Save £2,878 GBP (56%) vs most expensive(unlock to see where)
26 retailers carry this diamond
Most expensive: £5,149 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.28ct natural oval diamond

This 1.28ct natural oval sits in the one-and-a-quarter to one-and-a-half 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 2547009065. Listed at 26 retailers as of November 4, 2026, with prices from £2,271 to £5,149, a £2,878 spread on the same certified stone. NZ Jewellers lists it at £5,149. 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

1.28
Carat
J
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 2547009065
Dimensions8.63 × 6.10 × 3.76 mm
L/W Ratio1.41
Top View
8.63 mm6.10 mm1.28 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 2547009065
Side View
Table 61.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 61.6%

Caratlytics Score

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

Price History

Last verified: Nov 4
Current: £5,149 GBP|Low: £2,136 GBP|High: £5,149 GBP|Avg: £3,274 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 5, 2026
Retailer 12£2,285 GBP
Retailer 9£2,350 GBP
Retailer 3£2,678 GBP
Retailer 10£2,781 GBP
Retailer 11£2,863 GBP
Retailer 5£2,993 GBP
Retailer 4£3,089 GBP
Retailer 8£3,166 GBP
Retailer 6£3,344 GBP
Retailer 2£3,607 GBP
Retailer 7£4,942 GBP
NZ Jewellers£5,149 GBP

43 data points across 12 retailers

26 retailers£2,271 GBP to £5,149 GBP

B+
Cheapest Retailer
-
£2,271 GBP
B+
Retailer 2
-
£2,285 GBP
View
B+
Retailer 3
-
£2,329 GBP
View
B+
Retailer 4
-
£2,350 GBP
View
Final sale: no returns
B+
Retailer 5
-
£2,377 GBP
View
B
Retailer 6
-
£2,515 GBP
View
B
Retailer 7
-
£2,544 GBP
View
B
Retailer 8
-
£2,574 GBP
View
Retailer 9
-
£2,678 GBP
View
Price last confirmed 8 days ago
B
Retailer 10
-
£2,678 GBP
View
B
Retailer 11
-
£2,781 GBP
View
B
Retailer 12
-
£2,863 GBP
View
B
Retailer 13
-
£2,912 GBP
View
B
Retailer 14
-
£2,912 GBP
View
B
Retailer 15
-
£2,993 GBP
View
B
Retailer 16
-
£3,026 GBP
View
B
Retailer 17
-
£3,026 GBP
View
B
Retailer 18
-
£3,089 GBP
View
B
Retailer 19
-
£3,130 GBP
View
Retailer 20
-
£3,166 GBP
View
Price last confirmed 29 days ago
B
Retailer 21
-
£3,344 GBP
View
B
Retailer 22
-
£3,475 GBP
View
B
Retailer 23
-
£3,607 GBP
View
B
Retailer 24
-
£4,270 GBP
View
B
Retailer 25
-
£4,942 GBP
View
Most Expensive
B
NZ Jewellers
9fc7498b-d657-424c-a631-b4c64e9afbe9 · Nov 5
£5,149 GBP
$6,892 USD
View
25 more retailers have this diamond
Prices start from £2,271 GBPSave up to £2,878 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+
1.28ct Oval
£2,271 GBP