Round|Natural|GIA

1.53ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 1565648336

Certificate GIA 1565648336

Diamond specifications and retailer prices

From £3,295 GBP
As of October 31, 2026
Save £1,685 GBP (34%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £6,705 GBP at NZ Jewellers · As of October 30, 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 top-tier cut grade and certified by GIA 1565648336. Listed at 16 retailers as of October 31, 2026, with a 51% 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

1.53
Carat
I
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
Crown angle35°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 1565648336
Dimensions7.31 × 7.38 × 4.58 mm
L/W Ratio1.01
Girdle conditionFaceted
Key to symbols
Crystal, Feather
Top View
7.31 mm7.38 mm1.53 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 1565648336
Side View
Table 59.0%Crown 35°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 62.4%

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: £6,705 GBP|Low: £3,496 GBP|High: £6,705 GBP|Avg: £4,491 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 6, 2026
Retailer 3£3,496 GBP
Retailer 4£3,628 GBP
Retailer 8£3,731 GBP
Retailer 5£3,758 GBP
Retailer 6£3,931 GBP
Retailer 7£4,009 GBP
Retailer 16£4,009 GBP
Retailer 13£4,460 GBP
Retailer 10£4,511 GBP
Retailer 2£4,568 GBP
Retailer 12£4,832 GBP
Retailer 9£4,873 GBP
Retailer 11£4,979 GBP
Retailer 15£5,957 GBP
Retailer 14£6,294 GBP
NZ Jewellers£6,705 GBP

9 data points across 16 retailers

16 retailers£3,295 GBP to £4,979 GBP

A
Cheapest Retailer
-
£3,295 GBP
A
Retailer 2
-
£3,496 GBP
View
Price last confirmed 7 days ago
Retailer 3
-
£3,731 GBP
View
Price last confirmed 10 days ago
A
Retailer 4
-
£3,758 GBP
View
Price last confirmed 4 days ago
Retailer 5
-
£3,931 GBP
View
Price last confirmed 8 days ago
Retailer 6
-
£4,009 GBP
View
Price last confirmed 8 days ago
Retailer 7
-
£4,009 GBP
View
Price last confirmed 8 days ago
Retailer 8
-
£4,460 GBP
View
Price last confirmed 8 days ago
B+
Retailer 9
-
£4,511 GBP
View
Retailer 10
-
£4,568 GBP
View
B+
Retailer 11
-
£4,832 GBP
View
B+
Retailer 12
-
£4,873 GBP
View
B+
Retailer 13
-
£4,979 GBP
View
Retailer 14
-
£5,957 GBP
View
Price last confirmed 11 days ago
Retailer 15
-
£6,294 GBP
View
Price last confirmed 8 days ago
Most Expensive
NZ Jewellers
92573329-7ca3-49cf-a45f-afeb468440b1 · Oct 30
£6,705 GBP
$8,975 USD
View
Price last confirmed 7 days ago
15 more retailers have this diamond
Prices start from £3,295 GBPSave up to £1,685 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
1.53ct Round
£3,295 GBP