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Round|Natural|GIA

1.29ct I SI2 Round Natural Diamond

EX • I/SI2 • GIA 2497317996

Certificate GIA 2497317996

Diamond specifications and retailer prices

From £2,704 GBP
$3,623 USD
As of October 31, 2026
Save £1,053 GBP (28%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: £3,757 GBP at 77 Diamonds · As of October 30, 2026
View at 77 Diamonds

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 SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2497317996. Listed at 4 retailers as of October 30, 2026, with prices from £2,704 to £3,757, a £1,053 spread on the same certified stone. 77 Diamonds lists it at £3,757. 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
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.5°
Pavilion angle41.4°
OriginNatural
Grading LabGIA
CertificateGIA 2497317996
Dimensions6.97 × 7.01 × 4.31 mm
L/W Ratio1.01
Star length50%
Top View
6.97 mm7.01 mm1.29 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2497317996
Side View
Table 57.0%Crown 32.5°Girdle: MED-STKPavilion 41.4°Culet: NoneDepth 61.7%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: £3,757 GBP|Low: £3,155 GBP|High: £3,781 GBP|Avg: £3,504 GBP|+1.8%
77 Diamonds
Retailer 2
Retailer 3
October 31, 2026
Retailer 3£3,155 GBP
Retailer 2£3,658 GBP
77 Diamonds£3,757 GBP

31 data points across 3 retailers

4 retailers£2,704 GBP to £3,757 GBP

A
Cheapest Retailer
-
£2,704 GBP
$3,623 USD
B+
Retailer 2
-
£2,838 GBP
A$5,851 AUD
View
B
Retailer 3
-
£3,658 GBP
€4,668 EUR
View
Most Expensive
B+
77 Diamonds
RBZPZE8JEEV · Oct 30
£3,757 GBP
View
3 more retailers have this diamond
Prices start from £2,704 GBPSave up to £1,053 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
£2,704 GBP