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Round|Natural|GIA

1.29ct I SI2 Round Natural Diamond

VG • I/SI2 • GIA 2146627914

Certificate GIA 2146627914

Diamond specifications and retailer prices

From £2,167 GBP
A$4,466 AUD
As of October 31, 2026
Save £849 GBP (28%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: £3,016 GBP at 77 Diamonds · As of November 1, 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 very-good cut grade and certified by GIA 2146627914. Listed at 4 retailers as of October 31, 2026, with prices from £2,167 to £3,016, a £849 spread on the same certified stone. 77 Diamonds lists it at £3,016. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.29
Carat
I
Colour
SI2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2146627914
Dimensions6.81 × 6.85 × 4.39 mm
L/W Ratio1.01
Top View
6.81 mm6.85 mm1.29 ctI / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2146627914
Side View
Table 58.0%CrownGirdle: MED-THKPavilionCuletDepth 64.2%

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: Oct 31
Current: £3,016 GBP|Low: £2,699 GBP|High: £3,061 GBP|Avg: £2,866 GBP|-0.2%
77 Diamonds
Retailer 2
Retailer 3
November 1, 2026
Retailer 3£2,699 GBP
Retailer 2£2,860 GBP
77 Diamonds£3,016 GBP

32 data points across 3 retailers

4 retailers£2,167 GBP to £3,016 GBP

A
Cheapest Retailer
-
£2,167 GBP
A$4,466 AUD
B+
Retailer 2
-
£2,699 GBP
$3,616 USD
View
B+
Retailer 3
-
£2,860 GBP
€3,650 EUR
View
Most Expensive
B+
77 Diamonds
RBJDEAURMKG · Nov 1
£3,016 GBP
View
3 more retailers have this diamond
Prices start from £2,167 GBPSave up to £849 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
£2,167 GBP