Round|Natural|GIA

1.26ct L SI1 Round Natural Diamond

EX • L/SI1 • GIA 1499050085

Certificate GIA 1499050085

Diamond specifications and retailer prices

From £789 GBP
As of November 4, 2026
Save £1,831 GBP (70%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £2,968 GBP at NZ Jewellers · As of September 18, 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 L colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1499050085. Listed at 15 retailers as of November 4, 2026, with a 232% 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
L
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 1499050085
Dimensions6.83 × 6.87 × 4.29 mm
L/W Ratio1.01
Star length50%
Lower girdle75%
Key to symbols
Crystal, Pinpoint
Top View
6.83 mm6.87 mm1.26 ctL / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1499050085
Side View
Table 56.0%Crown 36°Girdle: MED-STKPavilion 40.6°CuletDepth 62.7%

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: Nov 4
Current: £2,621 GBP|Low: £789 GBP|High: £2,968 GBP|Avg: £1,433 GBP|-11.7%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 5, 2026
Retailer 7£789 GBP
Retailer 3£1,045 GBP
Retailer 5£1,074 GBP
Retailer 6£1,124 GBP
Retailer 4£1,201 GBP
Retailer 2£1,472 GBP
NZ Jewellers£2,621 GBP

43 data points across 7 retailers

15 retailers£789 GBP to £2,621 GBP

A
Cheapest Retailer
-
£789 GBP
A
Retailer 2
-
£1,045 GBP
View
A
Retailer 3
-
£1,074 GBP
View
A
Retailer 4
-
£1,124 GBP
View
Retailer 5
-
£1,135 GBP
View
Price last confirmed 25 days ago
Retailer 6
-
£1,156 GBP
View
Price last confirmed 30 days ago
A
Retailer 7
-
£1,201 GBP
View
Retailer 8
-
£1,217 GBP
View
Price last confirmed 60 days ago
Retailer 9
-
£1,217 GBP
View
Price last confirmed 50 days ago
Retailer 10
-
£1,230 GBP
View
Price last confirmed 38 days ago
B+
Retailer 11
-
£1,472 GBP
View
B
Retailer 12
-
£2,621 GBP
View
Retailer 13
-
£2,819 GBP
View
Price last confirmed 31 days ago
Retailer 14
-
£2,819 GBP
View
Price last confirmed 28 days ago
Most Expensive
NZ Jewellers
b32fce05-63ab-4d47-bbeb-4afa1cbc167e · Sep 18
£2,968 GBP
$3,995 USD
View
Price last confirmed 49 days ago
14 more retailers have this diamond
Prices start from £789 GBPSave up to £1,831 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
£789 GBP