CaratHunter
Plans
Round|Natural|GIA

1.04ct K SI1 Round Natural Diamond

EX • K/SI1 • GIA 1545806558

Certificate GIA 1545806558

Diamond specifications and retailer prices

From £1,926 GBP
As of November 5, 2026
Save £392 GBP (17%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: £2,318 GBP at Blue Nile · As of November 5, 2026
View at Blue Nile

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 1545806558. Listed at 4 retailers as of November 5, 2026, with prices from £1,926 to £2,318, a £392 spread on the same certified stone. Blue Nile lists it at £2,318. 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 angle34°
Pavilion angle41.8°
OriginNatural
Grading LabGIA
CertificateGIA 1545806558
Dimensions6.46 × 6.49 × 4.05 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Cloud, Crystal, Feather
Top View
6.46 mm6.49 mm1.04 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1545806558
Side View
Table 58.0%Crown 34°Girdle: MED-STKPavilion 41.8°Culet: NoneDepth 62.6%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: £2,318 GBP|Low: £1,868 GBP|High: £2,390 GBP|Avg: £2,155 GBP|-1.8%
Blue Nile
Retailer 2
Retailer 3
Retailer 4
November 6, 2026
Retailer 4£1,926 GBP
Retailer 2£2,068 GBP
Retailer 3£2,214 GBP
Blue Nile£2,318 GBP

37 data points across 4 retailers

4 retailers£1,926 GBP to £2,318 GBP

B+
Cheapest Retailer
-
£1,926 GBP
B+
Retailer 2
-
£2,068 GBP
View
B
Retailer 3
-
£2,214 GBP
View
Most Expensive
B
Blue Nile
28515650 · Nov 5
£2,318 GBP
$3,120 USD
View
3 more retailers have this diamond
Prices start from £1,926 GBPSave up to £392 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.

B+
1.04ct Round
£1,926 GBP