CaratHunter
Plans
Round|Natural|GIA

1.04ct K SI1 Round Natural Diamond

EX • K/SI1 • GIA 2566645103

Certificate GIA 2566645103

Diamond specifications and retailer prices

From £871 GBP
As of November 5, 2026
Save £1,736 GBP (67%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £2,606 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.04ct natural round diamond

This 1.04ct natural round sits in the classic one-carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2566645103. Listed at 8 retailers as of November 5, 2026, with prices from £871 to £2,606, a £1,736 spread on the same certified stone. NZ Jewellers lists it at £2,606. 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

1.04
Carat
K
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 2566645103
Dimensions6.48 × 6.47 × 4.01 mm
L/W Ratio1.00
Culet sizeNone
Key to symbols
Twinning Wisp, Feather, Crystal, Needle, Natural
Top View
6.48 mm6.47 mm1.04 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2566645103
Side View
Table 58.0%Crown 36°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 61.9%

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 5
Current: £2,606 GBP|Low: £866 GBP|High: £2,669 GBP|Avg: £1,438 GBP|-2.3%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 4£871 GBP
Retailer 7£958 GBP
Retailer 2£1,022 GBP
Retailer 8£1,068 GBP
Retailer 6£1,118 GBP
Retailer 3£1,442 GBP
Retailer 5£1,867 GBP
NZ Jewellers£2,606 GBP

15 data points across 8 retailers

8 retailers£871 GBP to £2,606 GBP

A
Cheapest Retailer
-
£871 GBP
A
Retailer 2
-
£958 GBP
View
A
Retailer 3
-
£1,022 GBP
View
A
Retailer 4
-
£1,068 GBP
View
A
Retailer 5
-
£1,118 GBP
View
B+
Retailer 6
-
£1,442 GBP
View
B
Retailer 7
-
£1,867 GBP
View
Most Expensive
B
NZ Jewellers
55664d72-83dc-458b-944b-d4361a18a82c · Nov 5
£2,606 GBP
$3,508 USD
View
7 more retailers have this diamond
Prices start from £871 GBPSave up to £1,736 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
1.04ct Round
£871 GBP