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Round|Natural|GIA

1.54ct K SI1 Round Natural Diamond

EX • K/SI1 • GIA 6565753085

Certificate GIA 6565753085

Diamond specifications and retailer prices

From £3,104 GBP
As of November 4, 2026
Save £3,230 GBP (51%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £6,334 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.54ct natural round diamond

This 1.54ct natural round sits in the one-and-a-half to two carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6565753085. Listed at 15 retailers as of November 4, 2026, with prices from £3,104 to £6,334, a £3,230 spread on the same certified stone. NZ Jewellers lists it at £6,334. 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

1.54
Carat
K
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 6565753085
Dimensions7.37 × 7.33 × 4.63 mm
L/W Ratio1.01
Star length50%
Culet sizeNone
Key to symbols
Cloud, Crystal, Needle
Top View
7.37 mm7.33 mm1.54 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6565753085
Side View
Table 57.0%Crown 36°GirdlePavilion 41.2°Culet: NDepth 62.9%

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 4
Current: £6,334 GBP|Low: £3,104 GBP|High: £6,334 GBP|Avg: £3,971 GBP
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
Retailer 14
Retailer 15
November 6, 2026
Retailer 7£3,104 GBP
Retailer 5£3,170 GBP
Retailer 3£3,228 GBP
Retailer 15£3,425 GBP
Retailer 11£3,557 GBP
Retailer 4£3,635 GBP
Retailer 13£3,635 GBP
Retailer 14£3,748 GBP
Retailer 2£3,959 GBP
Retailer 10£4,034 GBP
Retailer 8£4,081 GBP
Retailer 6£4,195 GBP
Retailer 9£4,436 GBP
Retailer 12£5,775 GBP
NZ Jewellers£6,334 GBP

8 data points across 15 retailers

15 retailers£3,104 GBP to £6,334 GBP

B+
Cheapest Retailer
-
£3,104 GBP
B+
Retailer 2
-
£3,170 GBP
View
B+
Retailer 3
-
£3,228 GBP
View
B+
Retailer 4
-
£3,425 GBP
View
B+
Retailer 5
-
£3,557 GBP
View
B+
Retailer 6
-
£3,635 GBP
View
B+
Retailer 7
-
£3,635 GBP
View
B
Retailer 8
-
£3,748 GBP
View
B
Retailer 9
-
£3,959 GBP
View
B
Retailer 10
-
£4,034 GBP
View
B
Retailer 11
-
£4,081 GBP
View
B
Retailer 12
-
£4,195 GBP
View
B
Retailer 13
-
£4,436 GBP
View
B
Retailer 14
-
£5,775 GBP
View
Most Expensive
C
NZ Jewellers
c492ab16-dc70-4932-8f29-4413773ac38a · Nov 5
£6,334 GBP
$8,525 USD
View
14 more retailers have this diamond
Prices start from £3,104 GBPSave up to £3,230 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+
1.54ct Round
£3,104 GBP