Round|Natural|GIA

0.37ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 2447808833

Certificate GIA 2447808833

Diamond specifications and retailer prices

From £331 GBP
$444 USD
As of October 31, 2026
Save £702 GBP (68%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £1,403 GBP at NZ Jewellers · As of October 30, 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 I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2447808833. Listed at 19 retailers as of October 30, 2026, with a 212% 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
I
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.5°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 2447808833
Dimensions4.60 × 4.57 × 2.87 mm
L/W Ratio1.01
Star length45%
Lower girdle80%
Top View
4.60 mm4.57 mm0.37 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2447808833
Side View
Table 56.0%Crown 36.5°Girdle: MED-STKPavilion 40.6°Culet: Very SmallDepth 62.5%

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: £1,403 GBP|Low: £331 GBP|High: £1,403 GBP|Avg: £529 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
Retailer 16
Retailer 17
Retailer 18
Retailer 19
November 2, 2026
Retailer 18£331 GBP
Retailer 15£340 GBP
Retailer 9£345 GBP
Retailer 4£352 GBP
Retailer 10£357 GBP
Retailer 16£357 GBP
Retailer 7£383 GBP
Retailer 3£397 GBP
Retailer 11£418 GBP
Retailer 5£419 GBP
Retailer 19£431 GBP
Retailer 6£455 GBP
Retailer 2£455 GBP
Retailer 12£494 GBP
Retailer 14£568 GBP
Retailer 17£586 GBP
Retailer 13£845 GBP
Retailer 8£1,034 GBP
NZ Jewellers£1,403 GBP

44 data points across 19 retailers

19 retailers£331 GBP to £1,034 GBP

A
Cheapest Retailer
-
£331 GBP
$444 USD
A
Retailer 2
-
£340 GBP
$455 USD
View
B+
Retailer 3
-
£345 GBP
$462 USD
View
B+
Retailer 4
-
£352 GBP
$472 USD
View
B+
Retailer 5
-
£357 GBP
$479 USD
View
B+
Retailer 6
-
£357 GBP
$479 USD
View
B+
Retailer 7
-
£369 GBP
A$760 AUD
View
B+
Retailer 8
-
£383 GBP
$513 USD
View
B+
Retailer 9
-
£397 GBP
$532 USD
View
B+
Retailer 10
-
£419 GBP
$561 USD
View
B+
Retailer 11
-
£431 GBP
$577 USD
View
B
Retailer 12
-
£455 GBP
$610 USD
View
B
Retailer 13
-
£455 GBP
View
B+
Retailer 14
-
£494 GBP
€631 EUR
View
B
Retailer 15
-
£568 GBP
ZAR 12,287 ZAR
View
Retailer 16
-
£586 GBP
A$1,209 AUD
View
Price last confirmed 29 days ago
B
Retailer 17
-
£845 GBP
View
B
Retailer 18
-
£1,034 GBP
CA$1,924 CAD
View
Most Expensive
NZ Jewellers
3eef4db4-03cc-497c-a2c6-72852cfd3402 · Oct 30
£1,403 GBP
$1,880 USD
View
Price under review
18 more retailers have this diamond
Prices start from £331 GBPSave up to £702 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
£331 GBP