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Round|Natural|GIA

1.53ct K SI1 Round Natural Diamond

EX • K/SI1 • GIA 6565303701

Certificate GIA 6565303701

Diamond specifications and retailer prices

From £2,444 GBP
As of November 4, 2026
Save £586 GBP (19%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: £3,031 GBP at Blue Nile · As of November 5, 2026
View at Blue Nile

About this 1.53ct natural round diamond

This 1.53ct natural round sits in the one-and-a-half to two carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6565303701. Listed at 6 retailers as of November 4, 2026, with prices from £2,444 to £3,031, a £586 spread on the same certified stone. Blue Nile lists it at £3,031. 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
K
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
Crown angle35.5°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 6565303701
Dimensions7.32 × 7.36 × 4.59 mm
L/W Ratio1.01
Culet sizeNone
Key to symbols
Twinning Wisp, Feather, Crystal, Cloud, Needle, Indented Natural, Natural
Top View
7.32 mm7.36 mm1.53 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 6565303701
Side View
Table 58.0%Crown 35.5°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 62.6%

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 4
Current: £3,031 GBP|Low: £2,155 GBP|High: £3,031 GBP|Avg: £2,758 GBP|+0.7%
Blue Nile
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 6, 2026
Retailer 3£2,444 GBP
Retailer 5£2,600 GBP
Retailer 4£2,797 GBP
Retailer 6£2,959 GBP
Retailer 2£2,962 GBP
Blue Nile£3,031 GBP

26 data points across 6 retailers

6 retailers£2,444 GBP to £3,031 GBP

A
Cheapest Retailer
-
£2,444 GBP
A
Retailer 2
-
£2,600 GBP
View
Final sale: no returns
B+
Retailer 3
-
£2,797 GBP
View
B+
Retailer 4
-
£2,959 GBP
View
B+
Retailer 5
-
£2,962 GBP
View
Most Expensive
B+
Blue Nile
30420837 · Nov 5
£3,031 GBP
$4,079 USD
View
5 more retailers have this diamond
Prices start from £2,444 GBPSave up to £586 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
£2,444 GBP