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Heart|Natural|GIA

1.33ct I SI2 Heart Natural Diamond

EX • I/SI2

Diamond specifications and retailer prices

From £2,587 GBP
As of November 5, 2026
Save £374 GBP (13%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: £2,962 GBP at The Diamond Guys · As of November 6, 2026
View at The Diamond Guys

About this 1.33ct natural heart diamond

This 1.33ct natural heart sits in the one-and-a-quarter to one-and-a-half carat band, graded I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA. Listed at 4 retailers as of November 5, 2026, with a relatively tight 14% spread, which is unusual at this carat range and suggests competitive pricing across the listings. 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

1.33
Carat
I
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
Dimensions6.68 × 7.51 × 4.47 mm
L/W Ratio1.12
Top View
6.68 mm7.51 mm1.33 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA
Side View
Table 60.0%CrownGirdle: MediumPavilionCuletDepth 59.5%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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Price History

Last verified: Nov 5
Current: £2,874 GBP|Low: £2,587 GBP|High: £3,056 GBP|Avg: £2,836 GBP|-0.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
The Diamond Guys
November 6, 2026
Retailer 3£2,587 GBP
Retailer 4£2,666 GBP
Retailer 1£2,874 GBP
The Diamond Guys£2,962 GBP
Retailer 2£3,056 GBP

42 data points across 5 retailers

4 retailers£2,587 GBP to £2,962 GBP

B+
Cheapest Retailer
-
£2,587 GBP
B+
Retailer 2
-
£2,666 GBP
View
B
Retailer 3
-
£2,874 GBP
View
Most Expensive
B
The Diamond Guys
1966905298 · Nov 6
£2,962 GBP
$3,964 USD
View
3 more retailers have this diamond
Prices start from £2,587 GBPSave up to £374 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+
1.33ct Heart
£2,587 GBP