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Round|Natural|GIA

1.29ct J SI1 Round Natural Diamond

EX • J/SI1 • GIA 6552616810

Certificate GIA 6552616810

Diamond specifications and retailer prices

From £1,145 GBP
As of November 5, 2026
Save £1,024 GBP (47%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £2,169 GBP at Wholesale Diamonds Direct · As of November 6, 2026
View at Wholesale Diamonds Direct

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 6552616810. Listed at 11 retailers as of November 5, 2026, with prices from £1,145 to £2,169, a £1,024 spread on the same certified stone. Wholesale Diamonds Direct lists it at £2,169. 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
FluorescenceNone
Crown angle36°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 6552616810
Dimensions6.92 × 6.96 × 4.35 mm
L/W Ratio1.01
Culet sizeNone
Top View
6.92 mm6.96 mm1.29 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6552616810
Side View
Table 57.0%Crown 36°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 62.7%

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: £1,301 GBP|Low: £1,139 GBP|High: £2,504 GBP|Avg: £1,700 GBP|-14.1%
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£1,145 GBP
Retailer 1£1,301 GBP
Retailer 5£1,313 GBP
Retailer 9£1,428 GBP
Retailer 2£1,555 GBP
Retailer 7£1,572 GBP
Retailer 4£1,674 GBP
Retailer 8£1,705 GBP
Retailer 6£2,002 GBP
Wholesale Diamonds Direct£2,169 GBP

33 data points across 10 retailers

11 retailers£1,145 GBP to £2,169 GBP

A
Cheapest Retailer
-
£1,145 GBP
A
Retailer 2
-
£1,301 GBP
View
A
Retailer 3
-
£1,313 GBP
View
A
Retailer 4
-
£1,428 GBP
View
A
Retailer 5
-
£1,555 GBP
View
A
Retailer 6
-
£1,572 GBP
View
A
Retailer 7
-
£1,674 GBP
View
A
Retailer 8
-
£1,705 GBP
View
B+
Retailer 9
-
£1,880 GBP
View
B+
Retailer 10
-
£2,002 GBP
View
Most Expensive
B+
Wholesale Diamonds Direct
610677876 · Nov 6
£2,169 GBP
$2,904 USD
View
10 more retailers have this diamond
Prices start from £1,145 GBPSave up to £1,024 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
£1,145 GBP