Round|Natural|GIA

0.37ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 6552944220

Certificate GIA 6552944220

Diamond specifications and retailer prices

From £294 GBP
$394 USD
As of October 31, 2026
Save £362 GBP (55%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £1,243 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 6552944220. Listed at 15 retailers as of October 31, 2026, with a 123% 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
OriginNatural
Grading LabGIA
CertificateGIA 6552944220
Dimensions4.56 × 4.58 × 2.87 mm
L/W Ratio1.00
Culet sizeNone
Top View
4.56 mm4.58 mm0.37 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6552944220
Side View
Table 55.0%CrownGirdle: THN-STKPavilionCulet: NoneDepth 62.7%

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: £1,243 GBP|Low: £194 GBP|High: £1,243 GBP|Avg: £435 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
November 1, 2026
Retailer 7£195 GBP
Retailer 8£239 GBP
Retailer 13£294 GBP
Retailer 10£302 GBP
Retailer 4£306 GBP
Retailer 14£316 GBP
Retailer 16£316 GBP
Retailer 3£339 GBP
Retailer 6£382 GBP
Retailer 11£401 GBP
Retailer 5£432 GBP
Retailer 2£491 GBP
Retailer 12£503 GBP
Retailer 9£656 GBP
Retailer 15£750 GBP
NZ Jewellers£1,243 GBP

26 data points across 16 retailers

15 retailers£294 GBP to £656 GBP

Retailer 1
-
£239 GBP
$320 USD
Price last confirmed 39 days ago
A
Retailer 2
-
£294 GBP
$394 USD
View
A
Retailer 3
-
£302 GBP
$405 USD
View
A
Retailer 4
-
£306 GBP
$410 USD
View
A
Retailer 5
-
£316 GBP
$424 USD
View
A
Retailer 6
-
£316 GBP
$424 USD
View
B+
Retailer 7
-
£339 GBP
$454 USD
View
B+
Retailer 8
-
£382 GBP
$512 USD
View
B+
Retailer 9
-
£401 GBP
View
B
Retailer 10
-
£432 GBP
$579 USD
View
B+
Retailer 11
-
£491 GBP
€627 EUR
View
B+
Retailer 12
-
£503 GBP
ZAR 10,886 ZAR
View
B
Retailer 13
-
£656 GBP
View
Retailer 14
-
£750 GBP
View
Price last confirmed 7 days ago
Most Expensive
NZ Jewellers
f6e3611a-a82c-41dd-872e-645eab931c6c · Oct 30
£1,243 GBP
$1,666 USD
View
Price under review
14 more retailers have this diamond
Prices start from £294 GBPSave up to £362 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
£294 GBP