Round|Natural|GIA

0.37ct H SI1 Round Natural Diamond

EX • H/SI1 • GIA 2558567946

Certificate GIA 2558567946

Diamond specifications and retailer prices

From £332 GBP
$445 USD
As of October 31, 2026
Save £592 GBP (64%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £1,350 GBP at NZ Jewellers · As of September 21, 2026
View at NZ Jewellers

About this 0.37ct natural round diamond

This 0.37ct natural round sits in the sub-half-carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2558567946. Listed at 18 retailers as of October 27, 2026, with a 178% 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

0.37
Carat
H
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.5°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 2558567946
Dimensions4.64 × 4.66 × 2.84 mm
L/W Ratio1.00
Culet sizeNone
Top View
4.64 mm4.66 mm0.37 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2558567946
Side View
Table 55.0%Crown 32.5°Girdle: MED-STKPavilion 41°Culet: NoneDepth 61.1%

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 31
Current: £530 GBP|Low: £386 GBP|High: £929 GBP|Avg: £596 GBP|+2.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 1, 2026
Retailer 7£389 GBP
Retailer 3£434 GBP
Retailer 1£530 GBP
Retailer 4£546 GBP
Retailer 6£564 GBP
Retailer 2£813 GBP
Retailer 5£924 GBP

42 data points across 7 retailers

18 retailers£332 GBP to £924 GBP

Retailer 1
-
£319 GBP
$428 USD
Price last confirmed 25 days ago
Retailer 2
-
£319 GBP
$428 USD
View
Price last confirmed 45 days ago
A
Retailer 3
-
£332 GBP
$445 USD
View
Retailer 4
-
£344 GBP
$461 USD
View
Price last confirmed 33 days ago
Retailer 5
-
£344 GBP
$461 USD
View
Price last confirmed 25 days ago
Retailer 6
-
£368 GBP
$493 USD
View
Price last confirmed 23 days ago
Retailer 7
-
£368 GBP
$493 USD
View
Price last confirmed 40 days ago
B+
Retailer 8
-
£407 GBP
$545 USD
View
B+
Retailer 9
-
£434 GBP
View
B
Retailer 10
-
£448 GBP
$600 USD
View
B
Retailer 11
-
£527 GBP
$705 USD
View
B+
Retailer 12
-
£530 GBP
€676 EUR
View
B+
Retailer 13
-
£546 GBP
ZAR 11,825 ZAR
View
Retailer 14
-
£564 GBP
A$1,163 AUD
View
Price last confirmed 28 days ago
B
Retailer 15
-
£813 GBP
View
B
Retailer 16
-
£924 GBP
View
Retailer 17
-
£1,350 GBP
$1,809 USD
View
Price under review
Most Expensive
NZ Jewellers
41b2673b-ec9c-4f1a-b335-e24419f65278 · Sep 21
£1,350 GBP
$1,809 USD
View
Price under review
17 more retailers have this diamond
Prices start from £332 GBPSave up to £592 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
0.37ct Round
£332 GBP