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Round|Natural|GIA

1.29ct H SI2 Round Natural Diamond

EX • H/SI2 • GIA 2235374259

Certificate GIA 2235374259

Diamond specifications and retailer prices

From £2,657 GBP
$3,560 USD
As of October 31, 2026
Save £1,352 GBP (34%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £4,009 GBP at Riddles Jewelry · As of October 31, 2026
View at Riddles Jewelry

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 H colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2235374259. Listed at 11 retailers as of October 31, 2026, with prices from £2,657 to £4,009, a £1,352 spread on the same certified stone. Riddles Jewelry lists it at £4,009. 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
H
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceMedium
Crown angle34°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 2235374259
Dimensions7.08 × 7.12 × 4.24 mm
L/W Ratio1.01
Star length55%
Lower girdle80%
Girdle conditionFaceted
Culet sizeNone
Top View
7.08 mm7.12 mm1.29 ctH / SI2
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceMedium
CertificateGIA 2235374259
Side View
Table 61.0%Crown 34°Girdle: THN-MEDPavilion 41.2°Culet: NoneDepth 59.7%

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: £3,703 GBP|Low: £2,623 GBP|High: £3,844 GBP|Avg: £3,335 GBP|+3.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
November 1, 2026
Retailer 4£2,657 GBP
Retailer 3£3,208 GBP
Retailer 1£3,703 GBP
Retailer 2£3,819 GBP

39 data points across 4 retailers

11 retailers£2,657 GBP to £4,009 GBP

A
Cheapest Retailer
-
£2,657 GBP
$3,560 USD
A
Retailer 2
-
£2,676 GBP
$3,585 USD
View
B+
Retailer 3
-
£2,783 GBP
$3,729 USD
View
B+
Retailer 4
-
£2,884 GBP
A$5,945 AUD
View
B+
Retailer 5
-
£2,978 GBP
CA$5,543 CAD
View
Retailer 6
-
£3,208 GBP
$4,298 USD
View
Price last confirmed 23 days ago
B+
Retailer 7
-
£3,208 GBP
$4,298 USD
View
B
Retailer 8
-
£3,436 GBP
$4,604 USD
View
B
Retailer 9
-
£3,703 GBP
€4,725 EUR
View
B
Retailer 10
-
£3,819 GBP
View
Most Expensive
B
Riddles Jewelry
1769430345 · Oct 31
£4,009 GBP
$5,371 USD
View
10 more retailers have this diamond
Prices start from £2,657 GBPSave up to £1,352 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
£2,657 GBP