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Cushion|Natural|GIA

3.05ct G SI1 Cushion Natural Diamond

EX • G/SI1 • GIA 1543760153

Certificate GIA 1543760153

Diamond specifications and retailer prices

From £28,274 GBP
As of November 5, 2026
Save £7,093 GBP (20%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: £35,367 GBP at The Diamond Guys · As of November 6, 2026
View at The Diamond Guys

About this 3.05ct natural cushion diamond

This 3.05ct natural cushion sits in the three to five carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1543760153. Listed at 6 retailers as of November 5, 2026, with prices from £28,274 to £35,367, a £7,093 spread on the same certified stone. The Diamond Guys lists it at £35,367. 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

3.05
Carat
G
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.54°
OriginNatural
Grading LabGIA
CertificateGIA 1543760153
Dimensions8.56 × 8.22 × 5.61 mm
L/W Ratio1.04
Cert comments
Additional clouds are not shown. Surface graining is not shown.
Key to symbols
Cloud, Feather, Pinpoint
Top View
8.56 mm8.22 mm3.05 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1543760153
Side View
Table 63.0%Crown 35.54°Girdle: Slightly ThickPavilionCulet: NoneDepth 68.3%

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: Nov 5
Current: £32,636 GBP|Low: £27,426 GBP|High: £36,104 GBP|Avg: £31,026 GBP|-1.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
The Diamond Guys
November 5, 2026
Retailer 7£27,426 GBP
Retailer 6£27,465 GBP
Retailer 2£28,274 GBP
Retailer 4£31,468 GBP
Retailer 5£31,468 GBP
Retailer 3£32,514 GBP
Retailer 1£32,636 GBP
The Diamond Guys£35,367 GBP

21 data points across 8 retailers

6 retailers£28,274 GBP to £35,367 GBP

B+
Cheapest Retailer
-
£28,274 GBP
B+
Retailer 2
-
£31,468 GBP
View
B+
Retailer 3
-
£31,468 GBP
View
B
Retailer 4
-
£32,514 GBP
View
B+
Retailer 5
-
£32,636 GBP
View
Most Expensive
B
The Diamond Guys
1997447854 · Nov 6
£35,367 GBP
$47,338 USD
View
5 more retailers have this diamond
Prices start from £28,274 GBPSave up to £7,093 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+
3.05ct Cushion
£28,274 GBP