CaratHunter
Plans
Cushion|Natural|GIA

0.33ct F SI1 Cushion Natural Diamond

EX • F/SI1 • GIA 6551405799

Certificate GIA 6551405799

Diamond specifications and retailer prices

From £355 GBP
SGD 644 SGD
As of October 31, 2026
Save £492 GBP (58%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £847 GBP at Queensmith · As of October 28, 2026
View at Queensmith

About this 0.33ct natural cushion diamond

This 0.33ct natural cushion sits in the sub-half-carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6551405799. Listed at 11 retailers as of October 28, 2026, with prices from £355 to £847, a £492 spread on the same certified stone. Queensmith lists it at £847. 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
F
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6551405799
Dimensions3.87 × 3.88 × 2.59 mm
L/W Ratio1.00
Top View
3.87 mm3.88 mm0.33 ctF / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryExcellent
FluorescenceNone
CertificateGIA 6551405799
Side View
Table 62.0%CrownGirdlePavilionCulet: NoneDepth 66.8%

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: Oct 31
Current: £847 GBP|Low: £355 GBP|High: £910 GBP|Avg: £575 GBP|-1.1%
Queensmith
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 3, 2026
Retailer 8£355 GBP
Retailer 2£453 GBP
Retailer 7£460 GBP
Retailer 9£490 GBP
Retailer 10£497 GBP
Retailer 11£510 GBP
Retailer 5£545 GBP
Retailer 6£562 GBP
Retailer 3£581 GBP
Retailer 4£837 GBP
Queensmith£847 GBP

36 data points across 11 retailers

11 retailers£355 GBP to £847 GBP

A
Cheapest Retailer
-
£355 GBP
SGD 644 SGD
B+
Retailer 2
-
£453 GBP
View
B+
Retailer 3
-
£460 GBP
$618 USD
View
B+
Retailer 4
-
£490 GBP
$658 USD
View
B+
Retailer 5
-
£497 GBP
View
B+
Retailer 6
-
£510 GBP
$685 USD
View
B
Retailer 7
-
£545 GBP
€696 EUR
View
B
Retailer 8
-
£562 GBP
ZAR 12,181 ZAR
View
Retailer 9
-
£581 GBP
A$1,199 AUD
View
Price last confirmed 30 days ago
B
Retailer 10
-
£837 GBP
View
Most Expensive
B
Queensmith
6551405799 · Oct 28
£847 GBP
View
10 more retailers have this diamond
Prices start from £355 GBPSave up to £492 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 Cushion
£355 GBP