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Round|Natural|GIA

1.29ct F SI1 Round Natural Diamond

EX • F/SI1 • GIA 1557909699

Certificate GIA 1557909699

Diamond specifications and retailer prices

From £2,771 GBP
$3,718 USD
As of October 31, 2026
Save £2,194 GBP (44%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £4,979 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 F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1557909699. Listed at 14 retailers as of October 31, 2026, with a 79% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
F
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
Crown angle34°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 1557909699
Dimensions6.99 × 7.04 × 4.26 mm
L/W Ratio1.01
Culet sizeNone
Top View
6.99 mm7.04 mm1.29 ctF / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 1557909699
Side View
Table 59.0%Crown 34°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 60.8%

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: Oct 31
Current: £3,207 GBP|Low: £2,771 GBP|High: £5,222 GBP|Avg: £3,642 GBP|-2.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Wholesale Diamonds Direct
November 2, 2026
Retailer 11£2,771 GBP
Retailer 10£2,792 GBP
Retailer 8£2,935 GBP
Retailer 4£3,024 GBP
Retailer 12£3,035 GBP
Retailer 1£3,207 GBP
Retailer 13£3,508 GBP
Retailer 2£3,532 GBP
Retailer 7£3,567 GBP
Retailer 9£3,686 GBP
Retailer 6£3,844 GBP
Retailer 5£4,672 GBP
Retailer 3£4,964 GBP
Wholesale Diamonds Direct£4,979 GBP

28 data points across 14 retailers

14 retailers£2,771 GBP to £4,964 GBP

A
Cheapest Retailer
-
£2,771 GBP
$3,718 USD
A
Retailer 2
-
£2,792 GBP
$3,747 USD
View
A
Retailer 3
-
£2,935 GBP
$3,938 USD
View
A
Retailer 4
-
£3,024 GBP
SGD 5,484 SGD
View
A
Retailer 5
-
£3,035 GBP
SGD 5,503 SGD
View
A
Retailer 6
-
£3,207 GBP
View
B+
Retailer 7
-
£3,508 GBP
$4,707 USD
View
B+
Retailer 8
-
£3,532 GBP
$4,740 USD
View
B+
Retailer 9
-
£3,567 GBP
€4,559 EUR
View
B+
Retailer 10
-
£3,686 GBP
View
B+
Retailer 11
-
£3,844 GBP
$5,159 USD
View
B+
Retailer 12
-
£4,672 GBP
$6,270 USD
View
B
Retailer 13
-
£4,964 GBP
$6,662 USD
View
Most Expensive
Wholesale Diamonds Direct
273030978 · Oct 26
£4,979 GBP
$6,681 USD
View
Price last confirmed 7 days ago
13 more retailers have this diamond
Prices start from £2,771 GBPSave up to £2,194 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
£2,771 GBP