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Round|Natural|GIA

1.26ct I SI2 Round Natural Diamond

EX • I/SI2 • GIA 2243037140

Certificate GIA 2243037140

Diamond specifications and retailer prices

From £1,022 GBP
HK$10,700 HKD
As of October 30, 2026
Save £1,450 GBP (59%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £3,168 GBP at NZ Jewellers · As of October 6, 2026
View at NZ Jewellers

About this 1.26ct natural round diamond

This 1.26ct 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 2243037140. Listed at 9 retailers as of October 29, 2026, with a 142% 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

1.26
Carat
I
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 2243037140
Dimensions6.82 × 6.87 × 4.30 mm
L/W Ratio1.01
Key to symbols
Crystal, Feather, Pinpoint
Top View
6.82 mm6.87 mm1.26 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2243037140
Side View
Table 57.0%CrownGirdle: Slightly ThickPavilion 40.6°Culet: NoneDepth 62.7%

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 30
Current: £1,336 GBP|Low: £1,022 GBP|High: £2,855 GBP|Avg: £1,745 GBP|-12.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
October 30, 2026
Retailer 4£1,022 GBP
Retailer 1£1,336 GBP
Retailer 5£1,432 GBP
Retailer 6£1,697 GBP
Retailer 2£1,922 GBP
Retailer 3£2,472 GBP

40 data points across 6 retailers

9 retailers£1,022 GBP to £2,472 GBP

A
Cheapest Retailer
-
£1,022 GBP
HK$10,700 HKD
A
Retailer 2
-
£1,336 GBP
View
A
Retailer 3
-
£1,432 GBP
SGD 2,593 SGD
View
Retailer 4
-
£1,515 GBP
$2,030 USD
View
Price last confirmed 24 days ago
Retailer 5
-
£1,624 GBP
$2,176 USD
View
Price last confirmed 31 days ago
A
Retailer 6
-
£1,697 GBP
A$3,498 AUD
View
A
Retailer 7
-
£1,922 GBP
€2,453 EUR
View
A
Retailer 8
-
£2,472 GBP
View
Most Expensive
NZ Jewellers
797baf82-68f8-46a8-89aa-9e96eb46fbd1 · Oct 6
£3,168 GBP
$4,245 USD
View
Price last confirmed 25 days ago
8 more retailers have this diamond
Prices start from £1,022 GBPSave up to £1,450 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
1.26ct Round
£1,022 GBP