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Round|Natural|GIA

1.29ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 6565717959

Certificate GIA 6565717959

Diamond specifications and retailer prices

From £1,511 GBP
As of November 5, 2026
Save £1,579 GBP (51%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £3,089 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 I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6565717959. Listed at 10 retailers as of November 5, 2026, with prices from £1,511 to £3,089, a £1,579 spread on the same certified stone. Wholesale Diamonds Direct lists it at £3,089. 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
I
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle41.6°
OriginNatural
Grading LabGIA
CertificateGIA 6565717959
Dimensions6.91 × 6.95 × 4.38 mm
L/W Ratio1.01
Culet sizeNone
Top View
6.91 mm6.95 mm1.29 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6565717959
Side View
Table 56.0%Crown 34°Girdle: MED-STKPavilion 41.6°Culet: NoneDepth 63.2%

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: £2,412 GBP|Low: £1,508 GBP|High: £3,089 GBP|Avg: £2,333 GBP|-0.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Wholesale Diamonds Direct
November 5, 2026
Retailer 2£1,511 GBP
Retailer 6£1,855 GBP
Retailer 5£1,887 GBP
Retailer 9£2,055 GBP
Retailer 4£2,216 GBP
Retailer 8£2,304 GBP
Retailer 3£2,381 GBP
Retailer 1£2,412 GBP
Retailer 7£2,877 GBP
Wholesale Diamonds Direct£3,089 GBP

9 data points across 10 retailers

10 retailers£1,511 GBP to £3,089 GBP

A
Cheapest Retailer
-
£1,511 GBP
A
Retailer 2
-
£1,855 GBP
View
A
Retailer 3
-
£1,887 GBP
View
A
Retailer 4
-
£2,055 GBP
View
A
Retailer 5
-
£2,216 GBP
View
A
Retailer 6
-
£2,304 GBP
View
A
Retailer 7
-
£2,381 GBP
View
A
Retailer 8
-
£2,412 GBP
View
B+
Retailer 9
-
£2,877 GBP
View
Most Expensive
B+
Wholesale Diamonds Direct
661965016 · Nov 6
£3,089 GBP
$4,135 USD
View
9 more retailers have this diamond
Prices start from £1,511 GBPSave up to £1,579 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
£1,511 GBP