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Round|Natural|GIA

1.25ct L SI1 Round Natural Diamond

EX • L/SI1 • GIA 2446189115

Certificate GIA 2446189115

Diamond specifications and retailer prices

From £1,112 GBP
As of November 4, 2026
Save £2,537 GBP (70%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £3,649 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.25ct natural round diamond

This 1.25ct 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 2446189115. Listed at 14 retailers as of November 4, 2026, with prices from £1,112 to £3,649, a £2,537 spread on the same certified stone. NZ Jewellers lists it at £3,649. 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

1.25
Carat
L
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle36°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 2446189115
Dimensions6.81 × 6.87 × 4.31 mm
L/W Ratio1.01
Star length50%
Lower girdle80%
Top View
6.81 mm6.87 mm1.25 ctL / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2446189115
Side View
Table 57.0%Crown 36°Girdle: THN-STKPavilion 41.2°Culet: NoneDepth 62.9%

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: Nov 4
Current: £3,649 GBP|Low: £1,103 GBP|High: £3,649 GBP|Avg: £1,702 GBP|+15.6%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 6, 2026
Retailer 8£1,112 GBP
Retailer 3£1,312 GBP
Retailer 4£1,355 GBP
Retailer 9£1,496 GBP
Retailer 12£1,496 GBP
Retailer 5£1,523 GBP
Retailer 10£1,565 GBP
Retailer 11£1,598 GBP
Retailer 2£1,606 GBP
Retailer 13£1,726 GBP
Retailer 7£1,826 GBP
Retailer 6£2,026 GBP
NZ Jewellers£3,649 GBP

38 data points across 13 retailers

14 retailers£1,112 GBP to £3,649 GBP

A
Cheapest Retailer
-
£1,112 GBP
A
Retailer 2
-
£1,312 GBP
View
A
Retailer 3
-
£1,355 GBP
View
B+
Retailer 4
-
£1,496 GBP
View
Retailer 5
-
£1,496 GBP
View
Price last confirmed 8 days ago
B+
Retailer 6
-
£1,501 GBP
View
B+
Retailer 7
-
£1,523 GBP
View
B+
Retailer 8
-
£1,565 GBP
View
B+
Retailer 9
-
£1,598 GBP
View
B+
Retailer 10
-
£1,606 GBP
View
B+
Retailer 11
-
£1,726 GBP
View
B
Retailer 12
-
£1,826 GBP
View
B
Retailer 13
-
£2,026 GBP
View
Most Expensive
C
NZ Jewellers
dac71206-4d7d-420f-880f-e447e30a9d1b · Nov 5
£3,649 GBP
$4,911 USD
View
13 more retailers have this diamond
Prices start from £1,112 GBPSave up to £2,537 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
1.25ct Round
£1,112 GBP