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Round|Natural|GIA

1.53ct I SI1 Round Natural Diamond

VG • I/SI1 • GIA 1508261184

Certificate GIA 1508261184

Diamond specifications and retailer prices

From £4,669 GBP
As of November 6, 2026
Save £2,932 GBP (39%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £9,148 GBP at NZ Jewellers · As of September 19, 2026
View at NZ Jewellers

About this 1.53ct natural round diamond

This 1.53ct natural round sits in the one-and-a-half to two carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by GIA 1508261184. Listed at 13 retailers as of November 4, 2026, with a 63% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.53
Carat
I
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 1508261184
Dimensions7.13 × 7.19 × 4.63 mm
L/W Ratio1.01
Star length45%
Lower girdle75%
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Twinning Wisp, Crystal, Needle, Indented Natural
Top View
7.13 mm7.19 mm1.53 ctI / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1508261184
Side View
Table 59.0%Crown 37.5°Girdle: ThickPavilion 40.8°Culet: NoneDepth 64.7%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: £5,071 GBP|Low: £4,669 GBP|High: £7,714 GBP|Avg: £5,601 GBP|+0.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 9£4,669 GBP
Retailer 7£4,807 GBP
Retailer 5£5,048 GBP
Retailer 8£5,058 GBP
Retailer 1£5,071 GBP
Retailer 6£5,308 GBP
Retailer 3£5,937 GBP
Retailer 2£6,673 GBP
Retailer 4£7,602 GBP

28 data points across 9 retailers

13 retailers£4,669 GBP to £7,602 GBP

B+
Cheapest Retailer
-
£4,669 GBP
B+
Retailer 2
-
£4,770 GBP
View
B+
Retailer 3
-
£4,807 GBP
View
B+
Retailer 4
-
£5,058 GBP
View
B+
Retailer 5
-
£5,071 GBP
View
Retailer 6
-
£5,308 GBP
View
Price last confirmed 15 days ago
Retailer 7
-
£5,469 GBP
View
Price last confirmed 50 days ago
B
Retailer 8
-
£5,590 GBP
View
B+
Retailer 9
-
£5,937 GBP
View
Retailer 10
-
£6,311 GBP
View
Price last confirmed 45 days ago
B
Retailer 11
-
£6,673 GBP
View
B
Retailer 12
-
£7,602 GBP
View
Most Expensive
NZ Jewellers
68907c84-ff02-425d-853e-cb1bb5ab8087 · Sep 19
£9,148 GBP
$12,244 USD
View
Price last confirmed 47 days ago
12 more retailers have this diamond
Prices start from £4,669 GBPSave up to £2,932 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.

B+
1.53ct Round
£4,669 GBP