Round|Natural|GIA

0.54ct H SI1 Round Natural Diamond

EX • H/SI1 • GIA 2426593331

Certificate GIA 2426593331

Diamond specifications and retailer prices

From £490 GBP
$656 USD
As of October 29, 2026
Save £1,175 GBP (71%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £1,664 GBP at NZ Jewellers · As of September 1, 2026
View at NZ Jewellers

About this 0.54ct natural round diamond

This 0.54ct natural round sits in the half to three-quarter carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2426593331. Listed at 18 retailers as of October 29, 2026, with a 240% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

0.54
Carat
H
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
Crown angle34°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 2426593331
Dimensions5.26 × 5.24 × 3.18 mm
L/W Ratio1.00
Culet sizeNone
Key to symbols
Feather, Twinning Wisp
Top View
5.26 mm5.24 mm0.54 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 2426593331
Side View
Table 59.0%Crown 34°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 60.6%

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: Oct 29
Current: £1,664 GBP|Low: £408 GBP|High: £1,664 GBP|Avg: £766 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
October 31, 2026
Retailer 11£490 GBP
Retailer 5£531 GBP
Retailer 9£534 GBP
Retailer 13£551 GBP
Retailer 3£596 GBP
Retailer 4£612 GBP
Retailer 2£633 GBP
Retailer 10£664 GBP
Retailer 7£755 GBP
Retailer 12£798 GBP
Retailer 6£819 GBP
Retailer 8£1,232 GBP
NZ Jewellers£1,664 GBP

44 data points across 13 retailers

18 retailers£490 GBP to £1,664 GBP

A
Cheapest Retailer
-
£490 GBP
$656 USD
Final sale: no returns
Retailer 2
-
£531 GBP
$711 USD
View
Price last confirmed 54 days ago
A
Retailer 3
-
£531 GBP
$711 USD
View
Retailer 4
-
£531 GBP
$711 USD
View
Price last confirmed 47 days ago
Retailer 5
-
£534 GBP
$715 USD
View
Price last confirmed 10 days ago
B+
Retailer 6
-
£551 GBP
$738 USD
View
Retailer 7
-
£596 GBP
$799 USD
View
Price last confirmed 20 days ago
Retailer 8
-
£612 GBP
$820 USD
View
Price last confirmed 54 days ago
B+
Retailer 9
-
£612 GBP
$820 USD
View
B+
Retailer 10
-
£633 GBP
View
B+
Retailer 11
-
£664 GBP
$890 USD
View
B
Retailer 12
-
£727 GBP
$974 USD
View
B+
Retailer 13
-
£755 GBP
€963 EUR
View
Retailer 14
-
£798 GBP
A$1,645 AUD
View
Price last confirmed 27 days ago
B+
Retailer 15
-
£819 GBP
ZAR 17,729 ZAR
View
B
Retailer 16
-
£1,232 GBP
View
B
Retailer 17
-
£1,664 GBP
$2,230 USD
View
Most Expensive
NZ Jewellers
6e4e990d-07a8-43aa-a141-85324760ba7a · Sep 1
£1,664 GBP
$2,230 USD
View
Price last confirmed 60 days ago
17 more retailers have this diamond
Prices start from £490 GBPSave up to £1,175 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
0.54ct Round
£490 GBP