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1.29ct J SI1 Round Natural Diamond

EX • J/SI1 • GIA 1553196097

Certificate GIA 1553196097

Diamond specifications and retailer prices

From £1,745 GBP
As of November 6, 2026
Save £1,213 GBP (41%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: £2,959 GBP at Jared · As of November 6, 2026
View at Jared

About this 1.29ct natural round diamond

This 1.29ct natural round 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 and certified by GIA 1553196097. Listed at 5 retailers as of November 6, 2026, with prices from £1,745 to £2,959, a £1,213 spread on the same certified stone. Jared lists it at £2,959. 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

1.29
Carat
J
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle35°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 1553196097
Dimensions7.03 × 4.24 × 4.24 mm
L/W Ratio1.66
Culet sizeNone
Top View
7.03 mm4.24 mm1.29 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1553196097
Side View
Table 59.0%Crown 35°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 60.5%

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 6
Current: £2,959 GBP|Low: £1,067 GBP|High: £2,959 GBP|Avg: £1,975 GBP
Jared
Retailer 2
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Retailer 8
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Retailer 16
October 30, 2026
Retailer 5£1,067 GBP
Retailer 13£1,472 GBP
Retailer 12£1,486 GBP
Retailer 3£1,560 GBP
Retailer 10£1,579 GBP
Retailer 15£1,632 GBP
Retailer 7£1,745 GBP
Retailer 14£1,869 GBP
Retailer 4£1,939 GBP
Retailer 6£2,133 GBP
Retailer 8£2,170 GBP
Retailer 16£2,297 GBP
Retailer 11£2,459 GBP
Retailer 2£2,861 GBP
Retailer 9£2,861 GBP
Jared£2,959 GBP

2 data points across 16 retailers

5 retailers£1,745 GBP to £2,959 GBP

A
Cheapest Retailer
-
£1,745 GBP
Retailer 2
-
£1,863 GBP
View
Price last confirmed 30 days ago
B
Retailer 3
-
£2,861 GBP
View
B
Retailer 4
-
£2,861 GBP
View
Most Expensive
B
Jared
160275453 · Nov 6
£2,959 GBP
$3,960 USD
View
4 more retailers have this diamond
Prices start from £1,745 GBPSave up to £1,213 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
1.29ct Round
£1,745 GBP