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Round|Natural|GIA

0.57ct M SI1 Round Natural Diamond

EX • M/SI1 • GIA 1438128050

Certificate GIA 1438128050

Diamond specifications and retailer prices

From £203 GBP
As of November 5, 2026
Save £253 GBP (55%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £1,081 GBP at NZ Jewellers · As of October 3, 2026
View at NZ Jewellers

About this 0.57ct natural round diamond

This 0.57ct natural round sits in the half to three-quarter carat band, graded M colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1438128050. Listed at 11 retailers as of November 5, 2026, with a 125% 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

0.57
Carat
M
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle36°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 1438128050
Dimensions5.27 × 5.31 × 3.32 mm
L/W Ratio1.01
Star length50%
Lower girdle75%
Key to symbols
Twinning Wisp, Feather
Top View
5.27 mm5.31 mm0.57 ctM / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1438128050
Side View
Table 55.0%Crown 36°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 62.8%

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: £455 GBP|Low: £203 GBP|High: £510 GBP|Avg: £353 GBP|-2.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 5, 2026
Retailer 2£203 GBP
Retailer 7£238 GBP
Retailer 6£299 GBP
Retailer 4£369 GBP
Retailer 3£421 GBP
Retailer 5£435 GBP
Retailer 1£455 GBP

44 data points across 7 retailers

11 retailers£203 GBP to £455 GBP

A
Cheapest Retailer
-
£203 GBP
A
Retailer 2
-
£238 GBP
View
Retailer 3
-
£282 GBP
View
Price last confirmed 36 days ago
Retailer 4
-
£299 GBP
View
Price last confirmed 8 days ago
Retailer 5
-
£317 GBP
View
Price last confirmed 38 days ago
B+
Retailer 6
-
£369 GBP
View
Retailer 7
-
£380 GBP
View
Price last confirmed 35 days ago
B+
Retailer 8
-
£421 GBP
View
B+
Retailer 9
-
£435 GBP
View
B
Retailer 10
-
£455 GBP
View
Most Expensive
NZ Jewellers
52c521ed-5fda-4bff-b122-2f70d312ff2d · Oct 3
£1,081 GBP
$1,455 USD
View
Price last confirmed 34 days ago
10 more retailers have this diamond
Prices start from £203 GBPSave up to £253 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
0.57ct Round
£203 GBP