Round|Natural|GIA

0.33ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 2566031436

Certificate GIA 2566031436

Diamond specifications and retailer prices

From £157 GBP
₹20,037 INR
As of November 1, 2026
Save £358 GBP (69%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £1,009 GBP at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 0.33ct natural round diamond

This 0.33ct 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 2566031436. Listed at 14 retailers as of November 1, 2026, with a 228% 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

0.33
Carat
I
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle35°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 2566031436
Dimensions4.43 × 4.45 × 2.73 mm
L/W Ratio1.00
Key to symbols
Crystal, Cloud, Feather
Top View
4.43 mm4.45 mm0.33 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2566031436
Side View
Table 60.0%Crown 35°Girdle: MED-STKPavilion 41°Culet: NoneDepth 61.5%

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: £1,009 GBP|Low: £157 GBP|High: £1,017 GBP|Avg: £373 GBP|+15.3%
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
November 1, 2026
Retailer 6£157 GBP
Retailer 5£191 GBP
Retailer 12£223 GBP
Retailer 11£235 GBP
Retailer 3£249 GBP
Retailer 9£284 GBP
Retailer 13£337 GBP
Retailer 10£352 GBP
Retailer 4£366 GBP
Retailer 2£371 GBP
Retailer 7£451 GBP
Retailer 8£515 GBP
NZ Jewellers£1,009 GBP

31 data points across 13 retailers

14 retailers£157 GBP to £515 GBP

A
Cheapest Retailer
-
£157 GBP
₹20,037 INR
A
Retailer 2
-
£191 GBP
HK$2,000 HKD
View
A
Retailer 3
-
£223 GBP
$299 USD
View
A
Retailer 4
-
£235 GBP
SGD 425 SGD
View
A
Retailer 5
-
£249 GBP
$333 USD
View
A
Retailer 6
-
£253 GBP
A$522 AUD
View
A
Retailer 7
-
£284 GBP
$381 USD
View
B+
Retailer 8
-
£337 GBP
$452 USD
View
B+
Retailer 9
-
£352 GBP
$471 USD
View
Retailer 10
-
£366 GBP
A$754 AUD
View
Price last confirmed 28 days ago
B+
Retailer 11
-
£371 GBP
€474 EUR
View
B+
Retailer 12
-
£451 GBP
View
B
Retailer 13
-
£515 GBP
View
Most Expensive
NZ Jewellers
e2af94fb-1c63-456b-9dda-f59734847e75 · Oct 30
£1,009 GBP
$1,352 USD
View
Price under review
13 more retailers have this diamond
Prices start from £157 GBPSave up to £358 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
0.33ct Round
£157 GBP