Cushion|Natural|GIA

1.00ct F SI1 Cushion Natural Diamond

EX • F/SI1 • GIA 6371885928

Certificate GIA 6371885928

Diamond specifications and retailer prices

From £1,908 GBP
$2,560 USD
As of October 31, 2026
Save £853 GBP (31%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £2,761 GBP at Taylor and Hart · As of October 31, 2026
View at Taylor and Hart

About this 1ct natural cushion diamond

This 1ct natural cushion sits in the classic one-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 6371885928. Listed at 18 retailers as of October 31, 2026, with prices from £1,908 to £2,761, a £853 spread on the same certified stone. Taylor and Hart lists it at £2,761. 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

1.00
Carat
F
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6371885928
Dimensions5.83 × 5.59 × 3.66 mm
L/W Ratio1.04
Top View
5.83 mm5.59 mm1.00 ctF / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 6371885928
Side View
Table 65.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 65.4%

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 31
Current: £2,453 GBP|Low: £1,893 GBP|High: £2,750 GBP|Avg: £2,211 GBP|+3.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 1, 2026
Retailer 8£1,893 GBP
Retailer 7£1,908 GBP
Retailer 4£1,960 GBP
Retailer 3£2,119 GBP
Retailer 9£2,149 GBP
Retailer 6£2,315 GBP
Retailer 5£2,387 GBP
Retailer 1£2,453 GBP
Retailer 2£2,742 GBP

41 data points across 9 retailers

18 retailers£1,908 GBP to £2,761 GBP

B+
Cheapest Retailer
-
£1,908 GBP
$2,560 USD
B+
Retailer 2
-
£1,960 GBP
$2,630 USD
View
B+
Retailer 3
-
£1,991 GBP
$2,672 USD
View
B+
Retailer 4
-
£2,038 GBP
$2,735 USD
View
B+
Retailer 5
-
£2,079 GBP
A$4,292 AUD
View
B+
Retailer 6
-
£2,119 GBP
SGD 3,843 SGD
View
B
Retailer 7
-
£2,149 GBP
$2,884 USD
View
B
Retailer 8
-
£2,161 GBP
$2,900 USD
View
B+
Retailer 9
-
£2,314 GBP
CA$4,312 CAD
View
B+
Retailer 10
-
£2,315 GBP
$3,106 USD
View
B
Retailer 11
-
£2,387 GBP
A$4,928 AUD
View
B
Retailer 12
-
£2,437 GBP
$3,270 USD
View
B
Retailer 13
-
£2,437 GBP
$3,270 USD
View
B
Retailer 14
-
£2,453 GBP
View
B
Retailer 15
-
£2,459 GBP
$3,300 USD
View
B
Retailer 16
-
£2,519 GBP
$3,380 USD
View
B
Retailer 17
-
£2,742 GBP
€3,505 EUR
View
Most Expensive
B
Taylor and Hart
LX2PUDX · Oct 31
£2,761 GBP
$3,705 USD
View
17 more retailers have this diamond
Prices start from £1,908 GBPSave up to £853 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+
1.00ct Cushion
£1,908 GBP