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Round|Natural|GIA

3.00ct H SI1 Round Natural Diamond

EX • H/SI1 • GIA 1405520085

Certificate GIA 1405520085

Diamond specifications and retailer prices

From £27,546 GBP
$36,908 USD
As of October 30, 2026
Save £21,039 GBP (43%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £48,585 GBP at Diamond Quarter · As of October 31, 2026
View at Diamond Quarter

About this 3ct natural round diamond

This 3ct natural round sits in the three to five carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1405520085. Listed at 8 retailers as of October 30, 2026, with prices from £27,546 to £48,585, a £21,039 spread on the same certified stone. Diamond Quarter lists it at £48,585. 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

3.00
Carat
H
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
Crown angle34.5°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 1405520085
Dimensions9.30 × 9.25 × 5.65 mm
L/W Ratio1.01
Culet sizeNone
Top View
9.30 mm9.25 mm3.00 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 1405520085
Side View
Table 59.0%Crown 34.5°Girdle: MED-STKPavilion 41°Culet: NoneDepth 61.1%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: £36,608 GBP|Low: £25,077 GBP|High: £36,608 GBP|Avg: £30,077 GBP|+3.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 29, 2026
Retailer 9£25,077 GBP
Retailer 3£27,546 GBP
Retailer 4£28,437 GBP
Retailer 2£28,473 GBP
Retailer 8£31,020 GBP
Retailer 5£31,383 GBP
Retailer 7£31,383 GBP
Retailer 6£32,428 GBP
Retailer 1£36,608 GBP

23 data points across 9 retailers

8 retailers£27,546 GBP to £48,585 GBP

B+
Cheapest Retailer
-
£27,546 GBP
$36,908 USD
B
Retailer 2
-
£28,437 GBP
$38,102 USD
View
B
Retailer 3
-
£28,473 GBP
$38,151 USD
View
Final sale: no returns
B
Retailer 4
-
£31,383 GBP
$42,050 USD
View
B
Retailer 5
-
£31,383 GBP
$42,050 USD
View
B
Retailer 6
-
£32,428 GBP
$43,450 USD
View
B
Retailer 7
-
£36,608 GBP
€46,715 EUR
View
Most Expensive
B
Diamond Quarter
3.0SI1H14855F70N · Oct 31
£48,585 GBP
View
7 more retailers have this diamond
Prices start from £27,546 GBPSave up to £21,039 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+
3.00ct Round
£27,546 GBP