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Round|Natural|GIA

0.37ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 1508866992

Certificate GIA 1508866992

Diamond specifications and retailer prices

From £173 GBP
₹22,126 INR
As of November 1, 2026
Save £765 GBP (82%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £939 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 1508866992. Listed at 18 retailers as of October 30, 2026, with prices from £173 to £939, a £765 spread on the same certified stone. NZ Jewellers lists it at £939. 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 angle32°
Pavilion angle41.6°
OriginNatural
Grading LabGIA
CertificateGIA 1508866992
Dimensions4.67 × 4.66 × 2.83 mm
L/W Ratio1.00
Star length55%
Lower girdle75%
Girdle conditionFaceted
Key to symbols
Crystal, Feather, Cloud
Top View
4.67 mm4.66 mm0.37 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1508866992
Side View
Table 59.0%Crown 32°Girdle: MED-STKPavilion 41.6°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: Nov 1
Current: £173 GBP|Low: £173 GBP|High: £572 GBP|Avg: £338 GBP|-3.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 1, 2026
Retailer 1£173 GBP
Retailer 6£254 GBP
Retailer 9£263 GBP
Retailer 8£273 GBP
Retailer 3£314 GBP
Retailer 5£380 GBP
Retailer 7£392 GBP
Retailer 4£407 GBP
Retailer 2£566 GBP

38 data points across 9 retailers

18 retailers£173 GBP to £939 GBP

A
Cheapest Retailer
-
£173 GBP
₹22,126 INR
A
Retailer 2
-
£210 GBP
HK$2,200 HKD
View
A
Retailer 3
-
£232 GBP
$311 USD
View
A
Retailer 4
-
£245 GBP
$328 USD
View
A
Retailer 5
-
£254 GBP
$340 USD
View
A
Retailer 6
-
£258 GBP
SGD 467 SGD
View
A
Retailer 7
-
£264 GBP
$354 USD
View
A
Retailer 8
-
£271 GBP
A$559 AUD
View
A
Retailer 9
-
£273 GBP
$366 USD
View
A
Retailer 10
-
£314 GBP
View
B+
Retailer 11
-
£330 GBP
$442 USD
View
B+
Retailer 12
-
£342 GBP
$459 USD
View
B+
Retailer 13
-
£355 GBP
$476 USD
View
B+
Retailer 14
-
£380 GBP
ZAR 8,222 ZAR
View
Retailer 15
-
£392 GBP
A$809 AUD
View
Price last confirmed 28 days ago
B+
Retailer 16
-
£407 GBP
€519 EUR
View
B
Retailer 17
-
£566 GBP
View
Most Expensive
B
NZ Jewellers
de85f1ec-639f-4e03-a9f0-9e2fcf3c4c28 · Oct 30
£939 GBP
$1,258 USD
View
17 more retailers have this diamond
Prices start from £173 GBPSave up to £765 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
£173 GBP