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Round|Natural|GIA

1.33ct K SI1 Round Natural Diamond

VG • K/SI1 • GIA 7436924391

Certificate GIA 7436924391

Diamond specifications and retailer prices

From £1,795 GBP
As of November 6, 2026
Save £2,128 GBP (54%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £3,923 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.33ct natural round diamond

This 1.33ct natural round sits in the one-and-a-quarter to one-and-a-half carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a very-good cut grade and certified by GIA 7436924391. Listed at 11 retailers as of November 5, 2026, with prices from £1,795 to £3,923, a £2,128 spread on the same certified stone. NZ Jewellers lists it at £3,923. 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

1.33
Carat
K
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryGood
FluorescenceNone
Crown angle36°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 7436924391
Dimensions6.97 × 7.02 × 4.35 mm
L/W Ratio1.01
Star length50%
Lower girdle75%
Top View
6.97 mm7.02 mm1.33 ctK / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryGood
FluorescenceNone
CertificateGIA 7436924391
Side View
Table 58.0%Crown 36°Girdle: MED-THKPavilion 40.8°Culet: NoneDepth 62.2%

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 6
Current: £3,923 GBP|Low: £1,794 GBP|High: £3,923 GBP|Avg: £2,297 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 2£1,795 GBP
Retailer 3£1,805 GBP
Retailer 8£1,876 GBP
Retailer 10£1,876 GBP
Retailer 11£1,963 GBP
Retailer 4£1,973 GBP
Retailer 6£2,097 GBP
Retailer 9£2,165 GBP
Retailer 5£2,290 GBP
Retailer 7£3,279 GBP
NZ Jewellers£3,923 GBP

31 data points across 11 retailers

11 retailers£1,795 GBP to £3,923 GBP

A
Cheapest Retailer
-
£1,795 GBP
A
Retailer 2
-
£1,805 GBP
View
B+
Retailer 3
-
£1,876 GBP
View
Retailer 4
-
£1,876 GBP
View
Price last confirmed 8 days ago
B+
Retailer 5
-
£1,963 GBP
View
B+
Retailer 6
-
£1,973 GBP
View
B+
Retailer 7
-
£2,097 GBP
View
B+
Retailer 8
-
£2,165 GBP
View
B+
Retailer 9
-
£2,290 GBP
View
B
Retailer 10
-
£3,279 GBP
View
Most Expensive
C
NZ Jewellers
32984eb7-c5e3-430b-9804-7f4e5f97af96 · Nov 5
£3,923 GBP
$5,280 USD
View
10 more retailers have this diamond
Prices start from £1,795 GBPSave up to £2,128 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
1.33ct Round
£1,795 GBP