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Round|Natural|GIA

4.00ct I SI1 Round Natural Diamond

EX • I/SI1

Diamond specifications and retailer prices

From £42,839 GBP
$57,400 USD
As of November 1, 2026
1 retailer carries this diamond
Only listing: £42,839 GBP at Rare Carat
Only one retailer lists this diamond right now, and it is shown above, so there is nothing to unlock. Similar diamonds are carried by several retailers.
View at Rare Carat

About this 4ct natural round diamond

This 4ct natural round sits in the three to five carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA. Listed at a single retailer as of November 1, 2026. If it later appears at another store, Carat Hunter will surface the price comparison automatically. 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

4.00
Carat
I
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
Dimensions10.24 × 10.17 × 6.16 mm
L/W Ratio1.01
Top View
10.24 mm10.17 mm4.00 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA
Side View
Table 59.0%CrownGirdle: MED-STKPavilionCulet: NoneDepth 60.4%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Nov 1
Current: £42,839 GBP|Low: £39,705 GBP|High: £55,239 GBP|Avg: £46,624 GBP|-0.2%
Rare Carat
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
October 18, 2026
Retailer 6£39,705 GBP
Retailer 7£40,502 GBP
Rare Carat£42,839 GBP
Retailer 2£43,701 GBP
Retailer 4£51,147 GBP
Retailer 3£53,192 GBP
Retailer 5£55,239 GBP

3 data points across 7 retailers

1 retailer

B
Rare Carat
P333554_5231250367 · Nov 1
£42,839 GBP
$57,400 USD
View

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
4.00ct Round
£42,839 GBP