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Round|Natural|GIA

1.26ct J SI2 Round Natural Diamond

EX • J/SI2 • GIA 6445671090

Certificate GIA 6445671090

Diamond specifications and retailer prices

From £1,452 GBP
HK$15,200 HKD
As of November 1, 2026
Save £2,601 GBP (64%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £4,053 GBP at NZ Jewellers · As of October 30, 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 J colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6445671090. Listed at 13 retailers as of October 30, 2026, with prices from £1,452 to £4,053, a £2,601 spread on the same certified stone. NZ Jewellers lists it at £4,053. 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
J
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
Crown angle35°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 6445671090
Dimensions6.87 × 6.83 × 4.31 mm
L/W Ratio1.01
Top View
6.87 mm6.83 mm1.26 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
CertificateGIA 6445671090
Side View
Table 56.0%Crown 35°Girdle: MED-STKPavilion 41°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 1
Current: £4,053 GBP|Low: £1,433 GBP|High: £4,683 GBP|Avg: £2,352 GBP|-13.5%
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 2, 2026
Retailer 7£1,452 GBP
Retailer 9£1,541 GBP
Retailer 4£1,621 GBP
Retailer 13£1,739 GBP
Retailer 10£1,756 GBP
Retailer 11£1,756 GBP
Retailer 3£1,837 GBP
Retailer 12£2,026 GBP
Retailer 2£2,043 GBP
Retailer 8£2,196 GBP
Retailer 5£2,600 GBP
Retailer 6£3,397 GBP
NZ Jewellers£4,053 GBP

40 data points across 13 retailers

13 retailers£1,452 GBP to £4,053 GBP

A
Cheapest Retailer
-
£1,452 GBP
HK$15,200 HKD
A
Retailer 2
-
£1,541 GBP
$2,065 USD
View
A
Retailer 3
-
£1,621 GBP
$2,172 USD
View
Final sale: no returns
A
Retailer 4
-
£1,739 GBP
$2,330 USD
View
B+
Retailer 5
-
£1,756 GBP
$2,353 USD
View
B+
Retailer 6
-
£1,756 GBP
$2,353 USD
View
B+
Retailer 7
-
£1,837 GBP
$2,462 USD
View
B+
Retailer 8
-
£2,026 GBP
$2,715 USD
View
B+
Retailer 9
-
£2,043 GBP
View
B+
Retailer 10
-
£2,196 GBP
€2,802 EUR
View
Retailer 11
-
£2,600 GBP
$3,484 USD
View
Price last confirmed 19 days ago
B
Retailer 12
-
£3,397 GBP
View
Most Expensive
C
NZ Jewellers
a1949a10-952a-466a-aab5-f5bd6a4c9967 · Oct 30
£4,053 GBP
$5,431 USD
View
12 more retailers have this diamond
Prices start from £1,452 GBPSave up to £2,601 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
£1,452 GBP