Round|Natural|GIA

1.29ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 6561017918

Certificate GIA 6561017918

Diamond specifications and retailer prices

From £1,473 GBP
As of November 5, 2026
13 retailers carry this diamond
Most expensive: £3,016 GBP at Wholesale Diamonds Direct · As of October 26, 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 6561017918. Listed at 13 retailers as of November 5, 2026. 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
FluorescenceStrong
Crown angle36.5°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 6561017918
Dimensions6.91 × 6.94 × 4.35 mm
L/W Ratio1.00
Culet sizeNone
Top View
6.91 mm6.94 mm1.29 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
CertificateGIA 6561017918
Side View
Table 55.0%Crown 36.5°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 62.8%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 5
Current: £1,473 GBP|Low: £1,464 GBP|High: £3,289 GBP|Avg: £2,226 GBP|-8.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Wholesale Diamonds Direct
November 5, 2026
Retailer 1£1,473 GBP
Retailer 10£1,789 GBP
Retailer 9£1,809 GBP
Retailer 8£1,839 GBP
Retailer 6£1,974 GBP
Retailer 4£2,003 GBP
Retailer 11£2,047 GBP
Retailer 2£2,163 GBP
Retailer 3£2,254 GBP
Retailer 5£2,343 GBP
Retailer 7£2,379 GBP
Retailer 12£2,804 GBP
Wholesale Diamonds Direct£3,016 GBP

28 data points across 13 retailers

13 retailers

A
Cheapest Retailer
-
£1,473 GBP
Retailer 2
-
£1,789 GBP
View
Price last confirmed 7 days ago
Retailer 3
-
£1,809 GBP
View
Price last confirmed 7 days ago
Retailer 4
-
£1,839 GBP
View
Price last confirmed 9 days ago
Retailer 5
-
£1,974 GBP
View
Price last confirmed 7 days ago
Retailer 6
-
£2,003 GBP
View
Price last confirmed 7 days ago
Retailer 7
-
£2,047 GBP
View
Price last confirmed 7 days ago
Retailer 8
-
£2,163 GBP
View
Price last confirmed 8 days ago
Retailer 9
-
£2,254 GBP
View
Price last confirmed 8 days ago
Retailer 10
-
£2,343 GBP
View
Price last confirmed 7 days ago
Retailer 11
-
£2,379 GBP
View
Price last confirmed 7 days ago
Retailer 12
-
£2,804 GBP
View
Price last confirmed 8 days ago
Most Expensive
Wholesale Diamonds Direct
271989831 · Oct 26
£3,016 GBP
$4,036 USD
View
Price last confirmed 11 days ago
12 more retailers have this diamond
Prices start from £1,473 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
£1,473 GBP